HARPAI.IDiE. 19 



(xxx. Diplocheilus Ant. simple, short : labrum deeply notched : mand. 

 acute : palpi with the terminal joint elongate, subovate, truncate : mentum 

 with a simple notch : tho. somewhat heart- shaped : elytra elongate, convex : 

 ant. tarsi of $ with 3 dilated joints. ) 



xxxi. Chl^enius Ant. simple: labrum slightly notched: mand. acute: palpi 

 with the terminal joint ovate, truncate : mentum with a bifid tooth : tlio. 

 truncate heart-shaped, or broadest behind : elytra faintly sinuated at the 

 apex : ant. tarsi of <$ with 3 dilated joints. 



xxxii. Callistus Ant. simple : labrum scarcely notched : palpi with terminal 

 joint elongate-ovate, attenuated at the tip : max. 1 -jointed: mentum with 

 an obtuse tooth : tho. heart-shaped, truncate, convex : elytra entire, pu- 

 bescent : ant. tarsi of $ with 3 dilated joints. 



§ 2. Claws sometimes toothed ; ant. tarsi of $ only dilated ; dilated joints 



mostly 3 -angular, or heart-shaped, 

 xxxiii. Anchomenus Mentum with a simple tooth : head as wide as the thorax, 

 . which is heart-shaped, with the hinder angles acute : body slightly convex : 



elytra oblong : ant. tarsi of $ with 3 dilated joints. 

 xxxiv. Platynus Mentum with a bifid tooth : head narrower than the thorax, 



which is heart-shaped, with the hinder angles acute : body depressed : 



elytra sinuated at the tip : ant. tarsi of $ with 3 dilated joints. 

 xxxv. Sphodrus Mentum with a bifid tooth : ant. with the 3d joint as long 



as the two following united : tho. depressed, obcordate-truncate : elytra 



entire : wings 2 : ant. tarsi of $ with 4 dilated joints, 

 xxxvi. Pristonychus Claws toothed : mentum with a bifid tooth : labial palpi 



with the terminal joint cylindric, truncate : ant. with 3d joint above twice 



as long as the 2d : tho. elongate, heart-shaped : elytra elongate-ovate, 



entire : wings : ant. tarsi of $ with 3 dilated joints, 

 xxxvii. Agonum Mentum with a simple tooth : tho. somewhat orbicular or 



subovate, the hinder angles rounded : body depressed : elytra faintly 



notched at the tip ; aid. tarsi of J elongated, and with 3 dilated joints, 

 xxxviii. Olisthopus Mentum not toothed : tho. orbicular: body depressed : 



elytra faintly sinuated at the tip : tarsi with basal joints elongated, of the 



$ anter. with 3 dilated ones. 

 xxxix. Odontonyx Claws toothed : mentum with an acute tooth : palpi 



with terminal joint fusiform, acuminated at the tip : tho. nearly orbicular, 



rounded behind : body slightly convex : elytra obliquely truncate : wings 



: ant. tarsi of males with 3 dilated joints, 

 xl. Synuchus C J aws toothed: mentum Avith an acute tooth : palpi with the 



terminal joint securiform : tho. rounded behind : body rather convex : 



elytra entire : wings 2 : ant. tarsi of males with 3 dilated joints, 

 xli. Calathus Claws toothed : mentum with a bifid tooth : palpi with the 



terminal joint cylindric, truncate : head triangular : tho. somewhat 



quadrate, depressed, mostly as wide at the base as the elytra, the latter 



elliptic, entire : ant. tarsi of <J with 3 dilated joints, 

 xlii. Platyderus Mentum with a bifid tooth : palpi with terminal joint 



ovate-cylindric, truncate at tip: tho. wide, depressed, somewhat quadrate: 



body flat : elytra entire : wings : ant. tarsi of $ with 3 dilated joints, 

 xliii. Argutor Mentum with a bifid tooth : palpi with terminal joint fusiform : 



tho. somewhat heart-shaped, truncate : body flat, narrow : ant. tarsi of 

 (J with 3 dilated joints. 

 xliv. Pogonus Mentum with a bifid tooth : palpi with terminal joint ovate, 



truncate : labrum notched : tho. somewhat quadrate : elytra flat, entire : 



ant. tarsi of $ with 2 dilated joints, 

 xlv. Pcecilus Mentum with a broad obtuse tooth : palpi cylindric ; tho. 



