1934 ] 
New West Indian Carabidx 
79 
behind middle; very faintly opalescent. Head with eyes 
only moderately prominent; antennae with middle joints 
about twice as long as wide; frontal sulci parallel, deep 
anteriorly, abbreviated and obsolete posteriorly; mentum 
toothed at middle, conspicuously bi-foraminate posteriorly. 
Prothorax just over a half wider than long (by measure- 
ment), squarely truncate at base and apex; disk with usual 
impressed lines, and with median longitudinal line contin- 
ued posteriorly as a conspicuous groove behind the basal 
impression ; base broad, angles obtuse but almost right, very 
precisely defined, not in the least blunted or rounded. Elytra 
each with seven striae in addition to the marginal one, but 
the seventh almost obsolete; two inner strise entire, others 
abbreviated apically ; several inner strise slightly impressed, 
outer ones very superficial ; strise slightly irregular but not 
distinctly punctate ; anterior dorsal puncture close to fourth 
stria about a third or a fourth from base, posterior punc- 
ture within tip of recurved stria. Male with only first joint 
of anterior tarsus dilated, with anterior apical angle much 
prolonged and acute. Length ±2% mm. 
Holotype $ (Museum of Comparative Zoology no. 19500) 
and 1 $ paratype from Soledad (near Cienfuegos) Cuba, 
Oct. 28, taken under cover beside a little brook in a saboruco 
or patch of rough, scrubby woods; 1 $ paratype from 
San Carlos Est., Guantanamo, Cuba, Oct. 4-8 (American 
Museum) ; 1 $ specimen, not a type, from Bath, Jamaica, 
Apr. 3-6 (American Museum) ; 1 $ paratype from Cay- 
amas, Sta. Clara, Cuba, Feb. 15, E. A. Schwartz (United 
States National Museum) ; 1 $ paratype from Jatibonico, 
Cuba, Oct. 30, in soil of sugar cane field, L. D. Christenson 
(U. S. N. M.). 
The form of the first tarsal joint of the male distinguishes 
this species from all our North American Tachys s. s. ex- 
cept corruscus Lee. As compared with the latter cubax 
is differently colored, broader, less depressed, the frontal 
sulci are conspicuously shorter, the antennae stouter, the 
prothorax broader at base with more precisely formed basal 
angles and with an extreme basal median channel. The 
two species are not really very closely related. Cubax is 
