BY THOMAS G. SLOANE. 119 



5. (6) Body not pedunculate, bases of prothorax and elytra in contact with 



one another. (Elytra 10-striate basad from apical declivity.) 



MiGADOPlNl. 



6. (5) Body pedunculate, bases of prothora.x: and elytra remote from one 



another Scaritini. 



7. (2) Anterior coxal cavities open beh'nd Cakabidae apketae. 



8. (91 Mandibles strongly dentate on inner side. Outer apical angle of an- 



terior tibiae prolonged Pamboeini. 



9. (8) Mandibles unarmed on inner side. Outer apical angle of anterior tibiae 



not prolonged Carabini. 



10. (1) Middle coxal cavities entirely enclosed by the sterna, epimera of the 



mesosternum not attaining the coxae . . . . Cakabidae conjunctae. 



11. (32) Anterior coxal cavities with a single opening inwards 



Cakabidae unipekforatae. 



12. (17) Head with one supraorbital seta on each side. Posterior marginal 



.seta of piothorax, if present, distant from basal angle. Anterior 

 tarsi in c?, if with vesture beneath, usually with fourth joint clothed 

 — often intermediate tarsi also with vesture beneath 



13. (16) Posterior marginal seta of prothora.x present, distant from basal angle. 



14. (15) Antennae with three basal joints glabrous; also fourth joint, at least 



near base. Vesture of tarsi in c?, if present, spongiose Broscini. 



15. (14) Antennae with three basal joints glabrous; fourth joint setulose. Four 



joints of anterior tarsi in d biseriately squamose beneath. Agonicini. 



16. (13) Posterior marginal seta of prothorax wanting, c?, if with tarsal ves- 



ture, usually with fourth joint clothed (vesture either spongiose or 

 biseriate) Harpalini. 



17. (12) Hiead normally with two supraorbital setae on each side. Posterior 



marginal seta of prothorax, if present, near basal angle. Anterior 

 tarsi in d, if with vesture beneath, never with more than three basal 

 joints clothed — intermediate tarsi never with vesture beneath. 



18. (231 Mandibles with a sensitive seta in scrobe of outer side. Antennae 



with not more than two basal joints glabrous. Anterior tarsi in cJ 

 not clothed beneath on more than two basal joints. 



19. (22) Palpi not subulate. 



20. (21) Elytra with margin interrupted posteriorly by an internal plica. Maxil- 



lary palpi with penultimate joint setulose. (Tarsi hairy above.) 



Merizodini. 



21. (201 Elytra with margin not interrupted posteriorly by an internal plica. 



Maxillary palpi with penultimate joint glabrous Trechini. 



22. (19) Palpi subulate Bembidiini. 



23. (18) Mandibles usually without a sensitive seta in scrobe of outer side. An- 



tennae with three basal joints glabrous. (If mandibles with a sensi- 

 tive seta in scrobe, then three joints of antennae glabrous — except 

 genus Pteroginiis with third joint setulose, but with three basal 

 joints of anterior tarsi biseriately squamose beneath in c?-) 



24. (25) Prosternum with intercoxal declivity of prosternum projecting back- 



wards in the form of a wedge. Paraglossae corneous, small, tri- 

 angular, much shorter than ligula. (Large black species 29-34 mm. 

 in length.) Cuneipectini. 



25. (24) Prosternum with intercoxal declivity not triangularly produced back- 



wards. Paraglossae membranous 



26. (27) Elytra with an inner plica near each side, usually visible at apical 



sinuosities , Pterostichini. 



