1922] NATURAL SCIENCES OF PHILADELPHIA 213 



Oxijstethus in Karny's key, 70 except that the pronotum is not as 

 decidedly truncate caudad. 



Genotype. — Eppioides malaya new species. 



Head with fastigium of vertex small, the dorsal surface weakly 

 sulcate only at the comparatively broadly rounded, truncate, apex; 

 its cephalic surface, in the same plane and connecting with the 

 facial fastigium. Face and genae smooth and shining. Pronotum 

 broadening caudad and shining, not rugose; its disk flattened, 

 broadened caudad and sharply defined from the lateral lobes in 

 color; lateral lobes vertical, decidedly deeper than any except dorsal 

 width, ventral portion of caudal margin as strongly convex as the 

 decided humeral sinus is concave. Tegmina and wings fully 

 developed. Tegmina with anal field flattened and sharply de- 

 limited; broadening gradually to the strongly truncate apex. 

 Prosternum unarmed. Mesosternum with latero-caudal angles 

 strongly produced ventrad in acute-angulate, lamellate spikes. 

 Metasternum similarly but not as strongly specialized and with a 

 node also at latero-caudal angles of proximal section. Ovipositor 

 short and moderately heavy, slightly upcurved and tapering to 

 the acute apex, the dorsal valves with margin smooth, but with a 

 distal serrate ridge laterad, ventral valves with a similar but 

 longer serrate ridge and with ventral margin coarsely but weakly 

 serrate distad. Limbs short, but proportionately not as short 

 nor as thick as in Oxylakis. Cephalic coxae spined. Femora 

 with genicular lobes rounded, except the caudal internal which are 

 unispinose; ventral margins armed with heavy spines, between 

 which there are no smaller spines. Cephalic tibiae with auditory 

 foramina rimate. 



Eppioides malaya new species. Plate XVII, figures 13 and 14. 



We have discussed above the appearance of this distinctive and, 

 in many respects, anomalous genus. The present species is very 

 closely related to E. bicolor, here described. 



Type: 9 : Labuan, British North Borneo. [Hebard Collection.. 

 Type no. 833.] 



In addition to the characters given in the generic diagnosis, the 



following appear noteworthy: 



Size medium, form rather slender for the group. Eyes small and 

 protuberant. Pronotum with a single distinct, though linear, 

 transverse sulcus on disk; ventro-cephalic angle of lateral lobes 

 strongly obtuse-angulate and showing a minute angular production, 

 ventro-caudal portion rounding evenly into the straight, oblique 

 ventral margin. Tegmina extending beyond caudal femora a dis- 

 tance nearly equal to their length to that point, the distal margin 

 faintly concave, truncate. Ovipositor showing a faint obliquity 



70 Gen. Ins., Orth., Locustidae, Agraeciinae, Fasc. 141, p. 4, (1912.). 



