1934 ] 
New West Indian Carabidx 
75 
18. Basal angles of prothorax very obtuse, almost rounded 
except for minute subprominent sinuation of margin; 
size ±2 % mm. 
Tachys putzeysi F. & S. 
Basal angles of prothorax obtuse but rather distinct; 
size 2-2% mm. 19 
19. Prothorax transverse, head relatively narrow (PI. 1, 
fig. 1) Tachys dominicanus n. sp. 
Prothorax less transverse, head broader 
Tachys sp. (Guadeloupe & Montserrat.) 
20. Surface of elytra with very fine, short, sparse pubes- 
cence Tachys striax n. sp. 
Surface of elytra not pubescent 21 
21. Posterior angles of prothorax accurately and minutely 
formed; color testaceous with head scarcely darker ...22 
Posterior angles of prothorax finely blunted or bluntly 
subdenticulate ; color castaneous, or partly testaceous 
with head much darker 25 
22. Form unusually slender, parallel 23 
Form broad 24 
23. Base of prothorax oblique at sides ; eyes very prominent. 
Tachys filax n. sp. 
Prothorax squarely truncate at base; eyes less promi- 
nent Tachys pumilus Dej. 
24. Median line of prothorax continued as a groove behind 
posterior transverse impression; first joint male front 
tarsus very wide; size ± z 2 1 / 2 mm. 
Tachys cubax n. sp. 
Median line of prothorax not continued behind posterior 
transverse impression; first joint male front tarsus rela- 
tively much narrower; size just under 2 mm. 
Tachys paulax n. sp. 
25. Sides of prothorax sinuate before basal angles, which 
would be almost right except are slightly blunted ; head 
and prothorax relatively narrow; size ±2% mm. 
Tachys scitulus Lee. 
