16 SYNOPTIC TABLES OF COLEOPTERA. — [June 1882. 
Posterior tarsi slender; prosternum margined at tip: prothorax with mner basal stria 
distinct, outer one wanting. ; 
Base of prothorax margined towards the sides; humeral angles not dentiform, elytra 
parallel, sides but little rounded near the base; posterior tarsi with obsolete 
groove on outside: 
Elytral strize rather fine, interspaces flat, prothorax rather convex, slightly wider 
than long, rounded on the sides, and not sinuate, base not narrower than tip. 
: 14. californicus, Dej. 
Base of prothorax not at all margined: 
Posterior tarsi not grooved on the outer side; body less elongate: 
Large, protharax rather flat at base, and feebly narrowed behind, but scarcely 
sinuate on the sides, elytra not wider than prothorax, strize fine, interspaces 
Hate mot shinines sneha... - eee re EEO VON S, 15. Menetvriesii, Motsch. 
First joint of posterior tarsi with two grooves, and an intervening ridge: body 
elongate, slender, the prothorax being narrower than theelytra, and more nar 
rowed behind: . 
Scutellar stria long, (J with one, 9 with two anal punctures each side, as usual) 
Prothorax less narrowed behind, elytra more parallel; 16, castanipes. Men. 
Prothorax more narrowed behind, elytra elongate oval: 
Hind angles rectangular: 
Tarsal grooves extending on the second joint....... 17. Spraguei, Lec. 
Tarsal grooves only on first jomt.................. 18. gracilior, Lec. 
lind fanelessoptselcoune ed) aia aes eee 19. Hornii, Lec. 
Scutellar stria short, elytra elongate oval,” deeply striate; (7 Q with two anal 
punctures each side.) 
Prothorax as wide as long, less norrowed behind, and sides less sinuate. 
20. Isabella, Lec. 
Prothorax longer than wide, more narrowed and sinuate behind. 
21. congestus, Men. 
Posterior tarsi slender, with the usual double groove and intervening ridge on the first 
joint, prosternum not margined at tip; head of usual size, prothorax narrowed be- 
hind, basal impressions linear, single. 
Hind angles of prothorax rectangular; base not margined. 
Tarsal grooves extending on the second joint, elytral strize deep, humeri dentifoure 
22. adoxus, Say. 
Hind angles of prothorax yery small rectangular, base margined. 
23. longicollis, Lec. 
Hind angles of prothorax obtuse rounded.................. 24, sphodrinus, Lec. 
Posterior tarsi slender, without marginal grooves, prosternum not margined at tip; head 
very large, hind trochanters very long; prothorax quadrate, moderately narrowed 
behind, angles rectangular, base broadly foveate each side, not margined, outer 
stria distinct, with a slight carina. : 
Hind angles of prothorax more prominent, hind trochanters acute at tip. 
25. prandiceps, Chaud. 
Hind angles of prothorax less prominent, hind trochanters rounded at tip. 
26. rostratus. Newm. 
