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camped near Juno. Again we found a most attractive spot, and although it was a true desert region there were most beautiful ferns of several species. A sweet-scented flowering tree attracted numerous butterflies as well as Pepsis and other wasps. We caught two specimens of a magnificent metallic green longicorn, Callichroma plicatum, looking as though it were a stray creature from the tropics, with its gorgeous livery. A most amusing incident occurred here. So far we had not seen a rattlesnake. Within a few feet of camp at dusk, Dr. Bequaert, stooping to examine a supposed curious cactus, was greeted with the sharp buzz of a rattle's warning. His exclamation drew the entire camp, and the specimen was duly dispatched and admired. After the excitement had subsided the doctor thought he would have a little joke upon the others and purely in jest, pointed suddenly toward the ground, exclaiming "Look out, there's another!" Suddenly from exactly where he pointed, another rattle sounded. I should like to have had a yardstick to have measured how far he jumped to find his jest come true! Both specimens (Crotalus atrox and confluentus) are now in the collection of Cornell University. It is interesting that they should have belonged to different species.

We celebrated the fourth of July by crossing the Pecos. Trans-Pecos, Texas! What scenes these words conjure to the naturalist. At that time the country had been so long suffering from drought that the cattle were dying by the thousands, their carcasses everywhere in most pitiful evidence. From New Braunfels we had shipped our tents home, preferring to sleep thereafter in the open. They had given us protection from mosquitoes which were not to be expected in the desert, while as to rain-well we had had none since leaving Virginia, and the summer showers of the desert, if we met with any, we thought would be no inconvenience. Poor greenhorns that we were! From now on we were seemingly continually playing tag with thunderstorms, and sleeping in swarms of mosquitoes! Reader, have you ever seen a desert thunderstorm? I will describe one, calmly. It rains pretty hard where you are, but not before you nor behind you. Or it rains a little harder before you or behind you, but not where you are. These storms are very particular about where they rain-they would not think about trespassing on one another's territory. They go wandering about over the desert, three or four of them sometimes at once, avoiding each other and looking like huge columns of smoke. But where they do rain they rain. They



dump the water out-well as I said before right hard, anything to get rid of it, and that quickly. And where they rain nothing travels for a while. Mud has its qualities and desert dobe is genuine. The vacillating streams, having neglected to provide for themselves a course while the weather is dry and they have time to think it over, are called upon when it rains. to decide in a hurry. That is the hour of their glory. They laugh at the lordly desert and cut across it at will, carrying rocks, boulders,-half a mountain side. Now they rule by the power of might, and the rest of creation must sit and await their pleasure. Well, one would not have chosen otherwise, for the rains brought leaves out on the desert plants, flowers everywhere, and with them insects. Fortunate were we, that when we could not travel we could collect.

Along the

This was a fine region for interesting Cicadida. Pecos River were Tibicen delicata and Proarna venosa. The latter was abundant from this region westward into New Mexico. At Ft. Stockton and from there also westward into New Mexico Tibicen eugraphes Davis were abundant on mesquite, screw bean, etc. At the bridge over the Pecos Dr. Bequaert caught a remarkable tabanid, Silvius pollinosus Williston. We camped on the desert some twenty miles from Sheffield. Again we found two rattlesnakes (Crotalus atrox) after dark, close to the camp. We came upon them while hunting with flashlights for Mutillidæ and Orthoptera. On the fifth of July we ate lunch at a little stream, where attractive looking dragonflies were abundant. We camped at Chancellor within sight of the Comanche Mountains, and well on toward the Ft. Davis range. Cicadas were very abundant, singing on the mesa after sundown in a long continued chorus, like the shrill rattle of a rattlesnake. Tarantula hawks (Pepsis) were also very abundant.

In the Fort Davis Mountains we had our first brief glimpse of the fauna and flora of a desert mountain range. According to Mr. Rehn the affinities of these mountains are strongly with the more northern Rockies and divergent from the Chisos Mountains to the south, which we should have visited had time permitted. In Musquiz Cañon near Ft. Davis we collected in a creek during a thunderstorm. Parnidæ (Dryops) and other aquatic Coleoptera and Hemiptera were very abundant. The scenery here was suggestive in its strange rock formations of the Garden of the Gods or of Texas Pass in Arizona which we were to see later. We spent a day well up Limpia Cañon, but owing to the excessive drought it was not very fruitful.

We had hoped for Plusotus but were disappointed. Enormous Allorhina mutabilis kept buzzing around the oaks. In the trap lantern was an interesting crambid, Eufernaldia cadarella Druce [argenteonervella Hulst]. The tree Uta (U. ornata), a scaly lizard related to our eastern swifts, we found in these mountains, and subsequently at two stations in Arizona.

The night of July 7 we camped on grazing land some miles northeast of Valentine, close beside a wash filled with bushes, several of which were in bloom. In the morning Dr. Bequaert and I found admirable collecting for Hymenoptera in this wash. There was a very populous colony of a small Stizus. One small tree attracted great numbers of flies. From time to time, resting upon its leaves and evidently attracted by the flies, came specimens of a Mellinus-always a rare wasp. Some fine bees were visiting the flowers. Finally, on the bank, several cacti infested with borers yielded a number of specimens of the tenebrionid-like longicorn Monilema.

At Sierra Blanca, in the road at night I observed a very populous colony of a pale yellow nocturnal honey ant, Myrmecocystus mexicanus. In a flooded creek Dr. Wright found several interesting amphibia; two species of spade foot toads, Scarpiophorus couchi and S. hammondii, were breeding, and there were three species of Bufo (cognatus, compactilis, and woodhousei), of which one was breeding. During the following morning we observed, growing along the roadside, a small white flower, Lepidium eastwoodia, which was attracting great numbers of small aculeate Hymenoptera. Dr. Bequaert and myself also collected two magnificent species of large bees of the genus Hemisia (H. rhodophus Cockerell and morsei Cockerell) on the large heads of Centaurea americana. This was done while waiting for a freight to get out of our way, and the others were doubtless vexed at the delay! In this region and westward flowers of the allthorn (Koeberlinia spinosa) afforded a wealth of Hymenoptera, but especially Philanthida and Pepsis. At night the pepsids would sleep among them, but during the day the bushes became the scene of an incessantly active, extremely active, host of wasps. To catch them in their quick and nervous flight here, there and away amongst the innumerable unyielding thorns which alone compose the allthorn bush was no easy task.

At Fabens, in the irrigated country east of El Paso along the Rio Grande, Dr. Bequaert was so fortunate as to make one of the really noteworthy captures of the trip-a small noc

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