SUBFAMILY IV. — GEOCORIN.E. 373 



second; eyes not obviously stalked, their inner margins usually 

 almost contiguous with front side margins of pronotum. 



I. Geocoris, p. 373. 

 aa. Head smooth; second and fourth joints of antennae subequal, third 

 shorter; first joint of beak equal to or shorter than second; eyes 

 obviously stalked, not in contact with front side margins of pro- 

 notum. II. Hypogeocoris, p. 378. 



I. Geocoris Fallen, 1814, 10. 



Short robust species, possessing the characters of subfamily 

 and of generic key and being especially notable for the broad 

 head with its very large curved, backward projecting eyes. 

 Ocelli very small, placed close to the inner border of eyes ; scu- 

 tellum as long as or longer than wide, clavus not or but slightly 

 surpassing its tip ; pleura coarsely punctate ; femora but little 

 swollen, unarmed. Some of the species are known to prey upon 

 other Heteroptera and it is probable that all are more or less 

 predaceous in habits. Ten species are known from North 

 America, five of which occur in the eastern states. 



KEY TO EASTERN SPECIES OF GEOCORIS. 



a. Groove of tylus extending back onto vertex and crossed near middle 

 by a sinuate transverse sulcus; femora dotted with brown; scu- 

 tellum with a prominent smooth calloused yellow spot each side 

 of base. 314. punctipes. 



aa. Groove of tylus not reaching back onto vertex, not crossed by a 

 transverse sulcus ; femora not or rarely dotted ; scutellum with- 

 out prominent elevated smooth spots at base. 

 b. Scutellum longer than wide, usually brownish or piceous with a 

 punctate yellow spot each side of middle; color grayish-yellow. 



c. Corium sparsely punctate, the punctures in evident rows; femora 



usually in great part or wholly piceous; macropterous form only 

 known. 315. bullatus. 



cc. Corium thickly irregularly punctate; femora wholly pale or faintly 

 dotted with fuscous ; both macropterous and brachypterous 

 forms known. 316. discopterus. 



bb. Scutellum equilateral, as wide at base as long. 



d. Pronotum and corium coarsely, irregularly punctate, the latter 



with a large smooth area near middle; scutellum wholly black 

 or piceous; upper surface in great part black or piceous. 



317. uliginosus. 



dd. Pronotum and corium finely, evenly and shallowly punctate, the 



latter without smooth area; scutellum and upper surface pale 



grayish-yellow. 318. frisoni. 



314 (498). Geocoris punctipes (Say), 1832, 18; I, 336. , 



Oblong-oval, robust. Above grayish-yellow; head between eyes, a 

 curved mark each side of apical third of pronotum and the scutellum, 



