TRIBE II. — CORIZINI. 277 



KEY TO EASTERN SPECIES OF CORIZUS. 



a. Outer hind border of metapleura not expanded and prolonged pos- 

 teriorly, the hind margin subtruncate, its outer angle broadly 

 rounded; transverse impression of pronotum ending each side in 

 a loop. 



b. Connexivum spotted; length, 6.5 — 8.5 mm. 204. crassicornis. 

 bb. Connexivum wholly pale (fig. 58, a) ; length, 5 — 6 mm. 



205. VIRIDICATUS. 



aa. Outer hind border of metapleura expanded and prolonged back- 

 ward, the hind margin sinuate, its outer angle subacute or 

 rounded; transverse impression of pronotum not ending in a loop; 

 length rarely over 6 mm. 



c. Last segment of abdomen short and broad, its apex truncate in 



female (fig. 58, b) , evenly rounded in male; side margins of 

 pronotum usually distinctly paler than the disk. 



206. HYALINUS. 



cc. Last ventral of abdomen distinctly longer, its apex acute or round- 

 ed in female, obtusely rounded in male; side margins of pro- 

 notum not distinctly paler than disk. 

 d. Dorsum banded with black, the second and sixth segments paler; 

 beak slightly passing hind coxae; southern species. 207. sid^e. 

 del. Dorsum without black transverse bands ; beak not passing hind 

 coxae. 

 e. Connexivum pale without spots or with very faint ones; beak 

 reaching to or almost to hind coxae; last dorsal of female with 

 apex obtusely rounded. 208. lateralis. 



ee. Connexivum spotted, sometimes nearly wholly dark; beak not 

 reaching hind coxae. 

 /. Last dorsal of female very long (fig. 58, c), acutely pointed. 



209. PUNCTATUS. 



ff. Last dorsal of female not greatly lengthened (fig. 58, d) , its 



apex not acute. 



g. Pronotum with a whitish median calloused line; body not 



densely hairy; larger, length, 5 — 6 mm. 210. bohemanii. 



gg. Pronotum without median line; body densely clothed with long 



fine hairs; smaller, 3.5 — 4.5 mm. 211. hirtus. 



204 (345). Corizus crassicornis (Linnaeus), 1758, 448. 



Elongate-oval, depressed above, subconvex beneath, thinly clothed 

 with very short pubescence. Above brownish- or grayish-yellow, usually 

 sprinkled or clouded with fuscous ; head yellow, a spot between ocellus 

 and eye, and a stripe on basal joint of antennae blackish; transverse 

 impression of pronotum, small spots on nerves of elytra and one on each 

 segment of connexivum fuscous ; dorsum black, a pale spot at middle of 

 third and fourth segments and two on the fifth, the sixth pale with a 

 median black spot; under surface yellow, the abdomen usually mottled 

 with fuscous and numerous minute reddish dots; legs yellow with nu- 

 merous black dots. Head with vertex broad, the cheeks subconvex, 

 reaching nearly to tip of tylus; basal joint of antennae passing apex of 



