NOTES ON ORTHOPTERA FROM COLORADO, NEW MEX-ICO, ARIZONA, AND TEXA8, AVITII DESCRIPTIONS OF NEW SPECIES. B}' AxDREw Nelson Caitdklt. Of tlie Ih'jutrhiwnt of AgricnHnre. The following-paper deals with three separate ('ollections: (1) a large collection fi'om Colorado, including a few from just across the line in New Mexico, made }\v Dr. H. G. Dyar and myself during the months of May, June, July, and August, 1901; (2) a small collection made in Arizona, mostly at Williams and Hot Springs, b\' Messrs. Schwarz and Barber during the summer of 1001; and (3) a small col-lection made by the writer in Texas in June and July, 1902. This material forms part of the collection of the U. S. National Museum. The Colorado collection, which furnishes material for the greater part of this paper, but partially confirms the result reached by Dr. Dyar regarding the life zones of that State as recently described by him" — that is, that there are four faunal regions in Colorado: prairie, foothill, alpine, and western slope. The orthopterous faiuia indicate the first three zones only, which are in most cases ([uite sharply defined, but there are a numl)er of species that occur in two or more of the zones. The line between the prairie and the foothill faunas is exceedingly well defined at some places, while at other places the transition from one to the other is more gradual. The primary aim of the Colorado expedition was to woi'k out the life history of Lepidoptera, and not to collect Orthoptera, and in conse-quence it was not possible to visit all parts of the State. Therefore the range worked over is not extensive and does not include places inaccessible by rail. A few specimens from Middle Park were pur-chased from E. J. Oslar, a professional collector of Denver, and are included in this pajjer. The various localities visited by the writer in Colorado, their alti-tude, location, and notes on the vicinity are given in the following alphabetical list: Baileys, Pari: County; altitude, 7,7Ufeet.—Th\H place is some miles up the Platte canyon. One day only was spent there and l)ut nine si)ecies of Orthoptera were taken. «Proc. U. S. Nat. Mas., XXV, 1902, p. 369. Proceedings U. S. National Museum, Vol. XXVI— No. 1333. ___