HIPPISCUS. 157 



Arphia neglecta, Thomas, Proc. Dav. Acad. Nat. Sci. i. p. 254 (1876) 5 ; Ann. Rep. Chief Eng. 



1878, p. 1844 6 . 

 Hippiscus neglectus, Scudd. Bull. U.S. Geol. Surv. ii. p. 264 (1876) 7 ; Thomas, Rep. Ent. Illinois 



ix. pp. 114, 115 (1880) 8 ; Scudd. Psyche, vi. pp. 273, 360, 361 (1892) 9 . 

 Xanthippus neglectus, Sauss. Prodr. (Edip. pp. 94, 95 (1884) 10 ; McNeill, Psyche, vi. pp. 63, 64 



(1891) ". 

 Cratypedes putnami, Thomas, Proc. Dav. Acad. Nat. Sci. i. pp. 257, 258, t. 36. fig. 6 (1876) 12 ; 



Rep. U.S. Ent. Com. ii. p. 259 (1881) 13 . 

 Hippiscus lineatus, Scudd. Proc. Bost. Soc. Nat. Hist. xix. p. 31 (1877) u ; Sauss. Prodr. (Edip. 



p. 87 (1884) 15 . 

 [Nee (E. neglecta, Thomas, Key Illinois Orthopt. p. 3, and Bull. Illinois Mus. Nat. Hist. i. p. 64 



(1876).] 



Hab. Noeth America, Rocky Mountain region from the high north, south into 

 Arizona and New Mexico 1_14 , also in the mountain regions near the Pacific 

 (Scudder 9 ). 



This is one of the most variable, and also the most widely distributed, species of the 

 genus. It is readily recognized from the nearly related forms by the retro-arcuate 

 posterior lateral margins of the pronotum. It most assuredly will be met with in the 

 mountain districts of Durango and Chihuahua in Mexico. 



25. Hippiscus australis, sp. n. 



? Trimerotropis monticola, Rehn, Trans. Am. Ent. Soc. xxvii. p. 97 (1900) \ 

 ? Trimerotropis fascicula, Rehn, loc. cit. p. 227 2 . 



Size small ; general colour dull brown, inconspicuously marked with fuscous on the tegmina and hind femora ; 

 in general appearance resembling at first sight a short-winged, rather robust, medium-sized Trimerotropis, 

 but differing from the species of that genus in the shape of the scutellum of the vertex, the very much 

 rougher pronotum, and the dissimilarly coloured wiugs. Ilelated to H. neglectus, but with the median 

 carina of the pronotum very decidedly trilobed, and the hind margin of the lateral lobe vertical, instead 

 of retro-arcuate ; while in the two pairs at hand there is no sign of the pale line so common on the 

 humeral angle of the tegmina of H. neglectus. 



Vertex of moderate width, about as broad as the shorter ( c?) or longer ( $ ) diameter of one of the eyes, the 

 bounding-walls fairly conspicuous and strongly converging towards the occiput, where they approach to 

 within a distance equal to one-half the longest width of the sulcus ; separated in front from the upper 

 edge of the frontal costa by a fairly large, deep, transverse pit ; the lateral foveolae subtriangular, rather 

 deep ; frontal costa prominent and strongly sulcate, especially in the vicinity of the ocellus ; antennae 

 normal, a little longer than ( <$ ) or about equalling ( £ ) the combined length of the head and pronotum. 

 Pronotum with a moderately coarse, but not very high, median carina, which is strongly trilobed, the 

 anterior portion being much the more prominent ; disc and hind part of the lateral lobes somewhat 

 coarsely rugose or tuberculate, the tubercles arranged in longitudinal series on the former, the hind edge 

 slightly acute-angled. Tegmina and wings rather narrow, extending beyond the tip of the hind femora 

 and abdomen in both sexes ; the intercalary vein not at all prominent, situated closer than usual to the 

 median vein. Hind femora rather robust, especially on the basal half, the lower carina quite prominent 

 on this portion. 



General colour dull brown, inconspicuously marked upon the tegmina and hind femora with fuscous ; upon the 

 former these darker markings tend towards gathering into basal, median, and subapical patches, somewhat 

 similarly to the pattern of markings in certain forms of B, neglectus and some of the species of Trimero- 

 tropis. Wings with the disc pale yellow, the outer two-fifths and the greater part of the anterior field 



