CARABIDAE. 43 



setigerous punolurc each side. Eyes round or oval, moderately 

 prominent, very narrowly separated from the mouth beneath. 

 Labrum usually broader than long, sometimes prolonged cover- 

 ing the mandibles; either truncate or emarginate, and sexsetose in 

 front. Maxillae slender, hooked at tip, rather obtusely in Tidra- 

 gonoderui>, ciliate or spinulose within, rarely toothed behind the 

 tip {Eucserus and Tetrugonodcrus), the apex ciliate in many 

 genera; outer lobe biarticulate, but otherwise variable; the palpi 

 variable in form, from slender to securiform. Mentum more or 

 less deeply emarginate; the epilobes always distinct, the bottom 

 of the emargination either without tooth or with a tooth of vari- 

 able form ; ligula and paraglossaj very varialjlc ; the palpi also 

 variable, the terminal joint equal to the preceding or longer, the 

 latter bisetose in front (except in some Gymindit^). Thorax vari- 

 able in form, sides distinctly margined, and with a seta at the 

 side and at the basal angle. Elytra truncate at tip in a variable 

 manner, the margin acute, entire, and narrowly inflexed, without 

 internal plica, the base margined. Prosternura usually obtuse at 

 tip, rarely acute or prolonged {Ci/closomus). Mesosternal epi- 

 mera narrow, sometimes almost entirely concealed by the episterna. 

 Metasternal epimera distinct; the posterior coxfe contiguous. 

 Legs usually slender, not very long, tibiue slender, the terminal 

 spurs moderate or short, rarely long (Tet7^agonoderus, Nemo- 

 ^a?'.sus), simple, rarely finely serrulate along their margins ( Tetra- 

 gonoderus, etc.). Tarsi variable in form, the fourth joint narrow, 

 emarginate, or deeply bilobed, the claws usually pectinate or 

 serrulate, sometimes however simple. 



The sexual characters are variable. The anterior tarsi are 

 often very nearly equal in the sexes, sometimes with three or 

 four joints slightly dilated in the male ; rarely the middle tarsi 

 are dilated (Pinacodera). The anal segment has usually more 

 setae in the female than in the male. 



Eucserus, which will be found in one of the extremes of the 

 following table, is one of those unfortunate genera which have 

 never been allowed to remain for any length of time in any one 

 position. At its beginning it was placed near the Harpali, thence 

 (Class. Col. N. A., p. 22), it was removed and made part of a 

 rather composite tribe, and placed near the Lachnoi)hori. Chau- 

 doir accepts this view. While it is doubtless an osculant form 



