they - 
Corixide. 333 
male without a distinct facial im- 
pression ; Scortt. 
(7) 34. Basal joint of posterior tarsi black at 
the apex, male without a strigil. 
(Subg. Callicorixa, B. White.) 
(86) 35. Claval markings longitudinal. F .» Borpt. 
(35) 36. Claval markings transverse. 
(42) 87. Pronotal angles obtuse, markings of 
corium transverse. 
(41) 388. Pronotum with 8-9 pale lines. 
(40) 89. Claws of intermediate legs as long as the 
tarsi. PREUSTA, 
(39) 40. Claws of intermediate legs not t nearly so 
long as the tarsi. 5 . SODALIS. 
(88) 41. Pronotum with seven pale lines 3 . COGNATA. 
(37) 42. Pronotal angles acute, markings of 
corium cuttulate or vermiculate. . CONCINNA. 
(6) 43. Pronotum with a distinct central keel. 
(45) 44, Intermediate tarsi shorter than the tibiee. 
(Subg. Glenocorisa, Thoms.) . . CARINATA, 
(44) 45. Intermediate tarsi as long as the tibia. 
(Subg. Oreinocoriua, B. White.) . CAVIFRONS. 
(1) 46. Pronotum without transverse markings. 
(Subg. Cymatia, Flor.) 
(48) 47. Pronotum nearly as long as the head . Bonsporrrit. 
(47) 48. Pronotum about one-third as long as the 
head. : : ; ‘ : . COLEOPTRATA. 
(Susc. MACROCORIXA, Thoms.) 
C. Geoffroyi, Leach.—Greenish black, entirely smooth 
and shining ; pronotum with sixteen to twenty irregular 
pale transverse lines; elytra, including the clavus and 
membrane, closely mottled with short vermiculate pale 
markings, irregularly punctured; legs testaceous, front 
tibies of the ¢ with a spine at the apex, pale elongate, 
parallel-sided, rounded on the upper margin close to the 
blunt apex, lower margin straight, of the 9 elongate, 
curved, pointed; intermediate tibiee simple, tarsi shorter 
than the tibiae, claws hardly shorter than the tarsi. 
L. 13-14 mm. 
Common and generally distributed. 
C. atomaria, Illig. (Panzeri, Fieb.; affinis, Leach).— 
Very like the above but smaller, with the pronotum 
