284 ENTOMOLOGICAL NEWS. [Oct., '06 



Some Utah Orthoptera. 



BY JAMES A. G. REHN. 



The Brooklyn Institute of Arts and Sciences having received 

 a small but very interesting collection of Orthoptera, col- 

 lected by one of its expeditions into southwestern Utah, turned 

 the material over to the author for study. The localities repre- 

 sented are all in Iron, Beaver and Piute Counties, except a few 

 specimens from Salt Lake City, and as the region has been little 

 visited the records are of considerable interest and value. A 

 new species of the genus Platybothrus, was collected and is 

 described herein. 



Acrydium iucurvatuni (Hancock). 



Beaver Creek Hills, Beaver County. 



These specimens are perfectly typical of this form, which 

 has been recorded from Washington, New Mexico and 

 Colorado. 



Cordillacris affinis Morse. 



Buckskin Valley, Iron County; Beaver Creek Hills, Beaver 

 County. 



One specimen has the longitudinal bar on the caudal femora 

 as present in C. occipitalis in addition to the transverse blotches. 



Platybothrus alticola n. sp. 



Type. $ ; Beaver Range Mountains, 8,000-10,000 feet, 

 Beaver and Piute Counties, Utah. [Brooklyn Inst. Arts and 

 Sciences.] 



Differing from P. brunneus (Thomas) in the considerably 

 smaller size, the slightly more angulate fastigium, the more 

 inflated tegmina and more robust caudal femora. From P. 

 sordidus (McNeill) it differs in the tegmina being hardly 

 shorter than the tip of the abdomen, in the pronotum being 

 divided about in the middle and in the smaller size. 



Size small ; form robust. Head with the occiput moderately inflated, 

 the vertex gently declivent to the fastigium, which, when viewed 

 dorsad, is rectangulate with the margins very slightly concave; foveolae 

 strongly oblong, nearly three times as long as the greatest width, 

 strongly impressed; face slightly retreating, arcuate; frontal costa 



