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GUIDE TO CALIFORNIA INSECTS. 



CARABID/E. 



The Carabidae are ground beetles, predaceous both as larvse and adults. 



SYNOPSIS OP GENERA. 



Bembidium: palpi with last joint slender and preceding joint enlarged. 

 Anillis: eyes wanting. Tachys sutural stria recurved at apex. 



Pterostichus: elytra with margin interrupted, with lateral plica and with 

 dorsal punctures. Psydrus four joints of antennae glabrous. 



Platynus: elytra obliquely sinuate at tip. Perigona: antennae thickened 

 beyond third joint. Caiathus, and Laemosternus: claws serrate, the latter 

 with elytral punctures. 



Amara: elytra with margin interrupted, with lateral plica and with two 

 setigei'ous punctures over eye. Nomius: four joints of antennae glabrous. 



Chlaenius: elytra with margin interrupted and with lateral plica. Barchy- 



Fig-uie 187 Wing of Carabid beetle. Black ai-eas are reversed in folding". 



lobus: mentum truncate in front. 



Calosoma: palpi with last joint triangular and elytra not truncate. Scaphi- 

 notus: hind cox<b separated Carabus: third joint of antennae not compressed. 



Anisodactylus: two setigerous punctures on each angle of clypeus. Galerita: 

 elytra, truncate. 



Dyschirus:body depundulate. Promecognathus: hind coxae separated. 

 Scarites: basal joint of antennae long. Schizogenius: front tarsi dilated. 

 Clivina: thorax more or less quadrate, palpi similar in the sexes. 



Harpalus: two basal joints of antennae glabrous. Babister: labium unusu- 

 ally short. Patrobus, Pogonus, and Trechus: with two setigerous punctures 



