1935] 
West Indian Carabidse 
181 
erately impressed, finely punctulate striae; inner intervals 
slightly convex, outer nearly flat; single dorsal puncture 
on inner side 3rd interval near middle. Metepisterna about 
twice as long as wide, narrowed posteriorly. Hind tarsi 
sulcate both sides above; 5th tarsal joint with about 3 setae 
each side below. Male anterior tarsi each with first 3 
joints conspicuously dilated and oblique. Length 8-9; width 
2. 7-3. 3 mm. 
Haiti: holotype $ (M. C. Z. no. 22022) and 19 paratypes 
from Etang Lachaux, Oct. 26-27 ; 10 paratypes from 
swamps north of Dessalines, Sept. 11; 1 paratype from 
Damien, near Port-au-Prince, A. Audant collector. My 
specimens were taken under trash and in loose soil a little 
above water level beside standing water. 
This species belongs to a small group of Loxandrus char- 
acterized by the elytra being opaque, especially in the $ . 
From opaculns Bates of Brazil, mutans differs in having the 
body piceous, not clear red, below; from sculptilis Bates of 
Mexico and Panama, in having the sides of the prothorax 
sinuate posteriorly. Both Bates’ species are unfortunately 
known to me only by description. 
Colpodes M’Leay 
In my first West Indian paper (pp. 92-93) I gave a key 
to the 15 insular species of Colpodes then known. Aquisi- 
tion of more material has now more than doubled the num- 
ber of species, so that a new key is necessary. In compos- 
ing it, I have avoided as much as possible using the form of 
the metepisterna as a character, for its use results in a very 
unnatural classification, full of borderline species, and very 
difficult to use. In deference to the past classifications of 
Chaudoir and Bates, however, I have arranged the couplets 
in such a way that all species the names of which occur in 
the key up to and including couplet 21 have the metepi- 
sterna with outer edge (not including the posterior lobe 
which overlaps the first ventral) not longer by measure- 
ment than 1 1/2 times the length of the anterior edge. These 
species would fall in Chaudoir’s groups I or II in his 1878 
revision (Ann. Soc. Ent. France (5) 8, pp. 278-382). 
Species named in couplet 22 or below have the metepisterna 
with outer edge not less than IY 2 times the anterior, and 
