1934 ] 
New West Indian Carabidse 
125 
nin£ specimens from Guadeloupe), but has the prothorax 
and appendages dark and the inner unpaired costae of the 
elytra obsolete, not conspicuous as in americana. The two 
species are very similar in form. 
Key to the West Indian Species of Pseudaptinus 
Since I am describing several new species of Pseudaptinus 
and recording others from the West Indies for the first time, 
it seems best to publish the following key : 
1. Posterior angles of prothorax basal, not prominent 
(Pseudaptinus s. s.) 2 
Posterior angles of prothorax before base, minutely 
prominent (subgenus Thalpius) 4 
2. Body irregular testaceous and brown, head black ; anten- 
nae not sharply bicolored; length just under 5 mm. 
apicalis n. sp. 
Uniform piceous or black; antennae sharply bicolored; 
length 5-6 mm. 3 
3. Side margins of prothorax distinct . marginicollis n. sp. 
Side margins of prothorax obsolete thaxteri n. sp. 
4. Body bicolored, black or brown with rufous prothorax ; 
punctuation rather fine and close; +5 mm. 
insularis Mutchler 
Not bicolored; punctuation variable 5 
5. Pinkish brown, upper surface opaque, finely and very 
closely punctate; ±5% mm cubanus Chd. 
Rufous, plain brown, or black; rather closely but more 
coarsely punctate, surface of head and thorax rather 
shining between punctures 6 
6. Antennae slender, middle joints about twice as long as 
wide; elytra usually with a vague post-median dark 
ar, ea dorsalis Brulle 
Antennae stout, middle joints scarcely longer than wide. 7 
