CARABIDAE. 33 



circumstances which show that it liad been introduced; for con- 

 venience, however, it is placed in the table. 



Antennae with tlirew basal joints entirely glabrons. 



Eighth and ninth striae of elytra very closely apiDroximated. The third 

 interval with a dorsal puncture, apex very feebly siiuiatc 



Diplochila. 

 Eighth and ninth striae distant. 

 Elytra not sinuate at apex. 



Seventh interval more or less carinate at base. Dicaelus. 



Elytra strongly sinuate at apex. 



Seventh interval not carinate. Licinus. 



Antennae with two basal joints only glabrous. Eighth and ninth striae 



not aijproximated, third interval with two dorsal punctures, apex not 



sinuate. Badister. 



Diplochila has the terminal joint of the palpi more or less 

 cylindrical and obtuse at tip. Dicselus and Licirrus have the 

 last joint more or less triangular, and in Badister somewhat oval 

 and flattened. 



Tribe XX.— PLATYIVIIVI. 



Antennae slender, rarely (Perigona) slightly thickened, arising 

 below a slight frontal ridge, the condyle exposed; three basal 

 joints glabrous, first joint not long, second usually short, rarely 

 as long as the third, in which case neither is elongate, third 

 moderate in length, usually longer than the others, but rarely 

 equal to or shorter than the fourth. Eyes moderately ])roniinent, 

 close to the mouth beneath. Head oval, rarely elongate, eyes 

 not very distant from the thora.x, two supra-orbital setae, front 

 slightly narrowed before the eyes, clypeus moderately prolonged, 

 and with a setigerous puncture each side. Labruin moderately 

 j)rominent, usually truncate in front and sexsetose, rarely deeply 

 emarginate. Mandibles moderately prominent, feebly arcuate, 

 acute at tip, without external seta. MaxillfB hooked at tip, cili- 

 ate or spinulose within, outer lobe biarticulate, palpi niodernte in 

 length, the terminal joint variable, rarely securiform. Mentnni 

 deeply emarginate, toothed or not, basal membrane more or less 

 prominent, ligula very variable in form, bisetose in iVont, the 

 j)aragloss83 variable in form and extent of union with the ligula: 

 palpi moderate, the last joint somewhat variable in form, the 

 penultimate bisetose in front. Thorax variable, sides with a 

 setigerous puncture, a second at the hind angle, when the latter 

 3 



