SCUDDER. — THE GENUS DEROTMEMA. 891 



3. Derotmema cupidineum. 



Derotineina cupidineum Scudd., Ann. Rep. Chief Eng., 1876, 513 (1876) ; Sauss., 

 Prodr. (Edip., 156-157 (1884). 



The type of the genus, and originally described from northern New 

 Mexico. I have since taken it on different western trips at Green River 

 and Alkali, Wyo., July 27 ; at White River, Col., near the Utah 

 boundary, July 24, Aug. 3 ; and at Castle Gate, Utah, Aug. 22. It is 

 one of the smallest species of the genus. 



4. Derotmema saussureanum, sp. nov. 

 Derotmema saussureanum Bruner !, MS. 



Of relatively small or medium size, fusco-testaceous, much mottled 

 with fuscous. Head with prominent subglobose eyes, followed centrally 

 by a fuscous stripe, the face often wholly or largely hoary, the form and 

 sculpturing of the occiput, vertex and front agreeing perfectly with the 

 two species described above ; autennje as long as ((^) or somewhat 

 shorter than ( 9 ) the hind femora, rufous, banded with fuscous, distinctly 

 in the male, obscurely in the female. Prouotum fusco-testaceous more 

 or less ferruginous, the lateral lobes margined below with hoary and 

 marked from the centre toward the lower posterior angle with a bright 

 white attenuated oblique stripe margined with black ; prozona mesially 

 constricted, at least in the male, so as to be subselliform, the metazona 

 scarcely or not so broad as at the eyes, its disk sparsely and irregularly 

 rugulose, often in the male nearly smooth, the hind margin very 

 obtusangulate, the angle distinct. Tegmina long, slender, and tapering, 

 dull ferruginous becoming subpellucid apically, the fore and hind margins 

 flecked alternately with dark fuscous and pallid, the contrasts between 

 which are vivid on the costal margin ; intercalary vein subequidistant 

 between the median and ulnar veins : wings either pale blue * or pale 

 citron at the base, pellucid at apex, with some iufuscation of the veins at 

 the extreme tip, and crossed by an extramesial, modei-ately broad and 

 solid blackish band, narrowed at the axillary area, nowhere broader than 

 the length of the pronotum, occasionally broken at the lower margin of 

 the axillary area, in that area sending a short spur baseward, attaining 

 the hind margin but not the anal angle, leaving two to three lobes 

 of the radiate area free, and not occupying in all more than half the 

 outer half of the wing. Hind femora ferrugineo-testaceous, fasciate with 



* The tint as in the European (Edipoda ccerulescens or paler than that of our 

 Leprus wheeleri. 



