176 Psyche [October 



18. Genus Banasa Stal. 



1. Posterior lateral angles of abdominal segments acuminate, projecting somewhat; 



color brownish; 10 mm sordida Uhl. 



Posterior lateral angles obtuse, not very prominent 2 



2. Third antennal segment about twice as long as second; head broad anteriorly; 



margin of abdomen with conspicuous black dots at the angles of the segments; 

 color greenish with olivaceous markings; length 7.5-11 mm. . .dinii(di)ata Say. 

 Third antennal segment but little longer than the second; head narrowed ante- 

 riorly; margin of abdomen with conspicuous black dots; ventral abdominal 

 punctures fewer and paler; genital plate of male narrower; colors somewhat 

 paler; length 9-11 mm calva Say. 



19. Genus Dendrocoris Bergroth. 

 Color brown, with paler areas of variable extent, connexivum spotted; length 

 6.5-7.5 mm humeralis Uhl. 



3. Subfamily ACANTHOSOMATIN^. 



Lateral angles of pronotum emarginate; posterior lateral margins depressed; orifices 

 abruptly curved, short 1- Elasmucha. 



Lateral angles entire; posterior lateral margins not depressed; orifices nearly 

 straight, longer 2. Elasmostethus 



1. Genus Elasmucha Stal. 



Color yellowish brown, mottled with reddish, variable in shade; length 7-9 mm. 



lateralis Say. 

 2. Genus Elasmostethus Fieber. 



1. Antenna; black or dark brown; punctures of pronotum concolorous except along 



posterior margin; color pale yellowish with reddish markings; length 10 mm. 



*atricomis V. D. 

 Antennse pale; pronotal punctures dark 2 



2. Larger, length 10 mm.; pronotum broader and shorter; color greenish yellow 



with reddish markings cniciatus Say. 



Smaller, length 8 mm.; pronotum narrower and longer; colors as in preceding 



t*cooleyi V. D. 



4. Subfamily ASOPIN.E. 

 Armince Bergr. 

 Cimicinoe Kirk. 



1 . Anterior femora armed with a spine or prominent tubercle near apex 2 



Anterior femora unarmed 3 



2. Scutellum large, broad, extending almost or quite to end of abdomen; frena 



not over one-third the length of the scutellum 6. Stiretrus 



Scutellum moderate in size, attenuated apically; frena extending to middle of 

 scutellum 1. Perillus. 



3. Base of abdomen armed below with a spine or tubercle 4 



Base of abdomen unarmed 3. Zicrona 



