SUBFAMILY IX. — ZELIN^. 573 



it from "Missouri" when that name included most of the north- 

 west. Taken in Colorado on alfalfa. 



III. Pselliopus Bergroth, 1905, 112. 



Rather stout species of medium size having the front lobe 

 of the head about as long as hind one exclusive of the neck, 

 hind lobe subglobose, abruptly constricted about its middle; 

 antennae inserted above and in front of eyes, joints 1 and 3 

 subequal, each one-half longer than 2, 4 shortest, about one- 

 half the length of 3 ; pronotum constricted in front of middle, 

 its disk convex, front angles tuberculate, humeral angles armed 

 with a short spine, hind margin in front of scutellum with a 

 very wide notch or indentation ; scutellum with apex more or 

 less flattened and obtusely rounded ; elytra reaching or slightly 

 surpassing tip of abdomen ; connexivum widely exposed, strong- 

 ly reflexed. Male with last dorsal and ventral united to en- 

 close the convex suborbicular genital plate, the apex of which 

 is armed with an erect or oblique spine. About a dozen species 

 are known, mostly from tropical America, three occurring in 

 our territory. They have been mostly described or recorded 

 under the name Milyas Stal, which was shown by Bergroth to 

 be preoccupied. 



KEY TO EASTERN SPECIES OP PSELLIOPUS. 



a. Disks of both front and hind lobes of pronotum smooth, unarmed; 

 tibia? annulate throughout their length. 

 b. Basal margin of pronotum within the wide notch in front of scutel- 

 lum bisinuate; short black spine of humeral angles of pronotum 

 projected slightly beyond the angle and directed backwards; gen- 

 eral color dull orange-yellow, more or less tinged with fuscous. 



547. CINCTUS. 

 bb. Basal margin of pronotum in front of scutellum truncate or straight 

 across ; short black spine of humeral angles not projected beyond 

 the angle and directed outwards; general color a bright orange- 

 yellow. 548. BARBERI. 

 aa. Front lobe of pronotum setose and beset with 10 — 12 distinct obtuse 

 tubercles; hind lobe with numerous small setose tubercles or 

 granules ; tibiae annulate only toward base. 549. latifasciatus. 



547 (779). Pselliopus cinctus (Fabricius), 1777, 302. 



Oblong-ovate. Dull orange-yellow with a slight fuscous tinge; head, 

 and often the front lobe of pronotum, in great part black; legs and 

 joints 1 and 2 of antennae dull white annulate with numerous black rings; 

 joints 3 and 4 of antenna? pale brown; scutellum with basal half in large 

 part black, apical half whitish; connexivum with an oblong or triangular 



