188 
Psyche 
[December 
For comparisons, see under the following species. 
Colpodes pavens n. sp. 
So similar to the preceding, C. agonellus, as to answer 
to the description of that species with the following 
changes: Color somewhat more brownish piceous. Head 
about 2/3 width prothorax. Prothorax relatively narrower, 
1/3 wider than long; base 1/5 wider than apex; sides 
sinuate before the posterior angles, which are relatively 
prominent and approximately right, although more or less 
finely blunted; margins finer. Elytra relatively a little 
narrower, 2/5 wider than prothorax; striae distinctly deep- 
er; intervals more convex. Length 6.5 (slightly more or 
less) ; width about 2.6 mm. 
Haiti: holotype $ (M. C. Z. no. 21995) and 3 paratypes, 
taken with the preceding species. 
These species, agonellus and pavens , are among the most 
slightly specialized Colpodes, with the 4th joint of the 
posterior tarsus scarcely more emarginate, although some- 
what shorter and broader, than in, for example, Agonum 
melanarium Dej. of the United States. They recall the 
Mexican Colpodes of the nugax group, but the latter re- 
semble Anchomenus more closely than Agonum s. str. 
Colpodes marcus n. sp. 
Rather elongate and convex, appendages shorter than 
average ; piceous, appendages scarcely paler ; head and 
prothorax moderately shining, elytra somewhat duller. 
Head large, 4/5 or slightly less width prothorax, but ap- 
pearing wider; eyes small, hardly at all prominent; gense 
oblique, only slightly convex in profile, neck very little nar- 
rowed ; 2 supra-ocular setse each side ; antennae rather short, 
reaching about to base prothorax ; mentum tooth triangular, 
pointed or somewhat blunted. Prothorax as long to about 
1/8 longer than wide, subquadrate, slightly narrowed an- 
teriorly and posteriorly, base about wide as apex; sides 
slightly, broadly arcuate, faintly sinuate at posterior mar- 
ginal bristle ; margins very narrow, each with usual 2 setse, 
the posterior 1/10 or more before base; posterior angles 
rounded, but not very broadly so; base finely margined, 
apex not ; disk convex except depressed near posterior 
