574 BANKS. 



A single specimen in which the right mid leg and tlie left hind leg 

 are missing, otherwise perfect. A profile view presents a striking likeness 

 to a miniature bison. 



Subf. PACIIYGRONTHINiE. 



PACHYGRONTHA Geimav. 



Silb. Rev. Ent. (1837), 5,152. 

 Type: P. lineata Germ. 



49. Pachygrontha bicornuta sp. nov. (Plate I, fig. 5, a.) 



9 oehraceous to sordid white, varnished, thickly, darkly punctate; 

 punctation extending to median dorsal area of first four abdominal 

 segments (covered by wings and elytra). Head, including lateral lobes, 

 two-thirds as wide as long; regularly punctate, a recurved, dark sulcus 

 extending from base of eyes to ocelli, thence slightly anteriad; lateral 

 lobes strongly carinate and directed forward and downward, terminating 

 acutely. Lower surface of head and thorax in 2 pitchy brown ; pronotum 

 nearly one-fourth longer than broad at base, anterior margin slightly 

 concave, lateral margins straight; posterior margin obscurely sinuate, 

 posterior lateral angles dark brown as is posterior margin, except a pale 

 hairline exactly on margin ; a ferrugineous, slightly elevated lunate area 

 on each side of the anterior half of pronotum, these separated by a pale 

 median line. Scutellum dark at base with levigate carina from before 

 middle to apex, which is pale and acute : an obsolescent, pale levigate spot 

 between anterior termination of carina and basal angle. 



Corium pale oehraceous, darker on inner margin; a piceous fascia 

 broadening from near base to middle of apical margin where a darker 

 spot occurs, as also a minute spot at apical angle ; membrane fuliginous ; 

 veins and vein areas much paler. 



Disc of third and fourth abdominal segments dorsally and ventrally 

 oehraceous, the dorsal sjDarsel}' brown, punctate; all dorsal segments 

 minutely transversely striate, connexivum stramineous, with pale, rufous, 

 longitudinal line dorsally, and darker stigmata ventrally. Ventral sur- 

 face of abdomen except as indicated above and except inner margin of 

 fiftli segment, bhick; legs pale oehraceous; femora and tibife punctate; 

 anterior femora black beneath and densely punctate above; spines pale, 

 black at apices. Antennfe one-sixth longer than body; first segment 

 equal to third and fourth together, dark oehraceous, black at apex; 

 second .and third darker, apical half of third, pale stramineous; fourth 

 piceous. 



Length 9 millimeters; width "2 millimeters. 



S differs from 2 in being paler dorsally and ventrally, both surfaces 

 of abdomen reddish oehraceous ; anterior femora and all coxaj concolorous 



