176 
Psyche 
[December 
paratypes from Mt. Trou d’Eau, 4,000 ft., Nov. 19; most 
taken beside temporary muddy pools in roads. 
In Hayward’s key to the North American species of 
Tachyura (Trans. American Ent. Soc. 26, 1899, pp. 202-), 
tritax runs to incurvus Say, agreeing in general form and 
in the structure of the basal transverse groove of the 
prothorax, but incurvus is spotted and has only a sutural 
stria on each elytron. Most of the known Central Ameri- 
can species of this group have the basal groove strongly 
tri- or uni-foveate at middle, and none has other characters 
as in tritax. The striation of the elytra in the latter is 
remarkable for its constancy. 
Tachys (s. s.) carib n. sp. 
Moderately broad and depressed; rather shining testa- 
ceous or brownish testaceous, head darker, iridescence 
faint. Head about 2/3 width prothorax, but with eyes 
prominent, forming nearly right angles with sides of head 
behind them ; antennae with middle joints V 2 or slightly more 
longer than wide; front with usual 2 rather shallow sub- 
parallel impressions ; mentum biperf orate and toothed. 
Prothorax about 3/5 wider than long; sides more or less 
strongly sinuate just before the right (but finely blunted) 
posterior angles ; disk with usual impressions. Elytra 
rather broadly oval; humeri rounded but distinct; each 
elytron with about 3 inner striae more or less impressed 
except at apex, outer striae faint or absent; anterior dorsal 
puncture almost on 4th stria 1/3 from base, posterior 
within hooked tip of recurved striole. Male with 2 basal 
joints each front tarsus narrowly dilated. Length 1.8-2. 2; 
width 0. 8-0.9 mm. 
Haiti, Cuba, Jamaica, Puerto Rico: holotype $ 
(M. C. Z. no. 22017) and 95 paratypes from Ennery, Haiti, 
Sept. 6-11; additional paratypes from Haiti as follows: 7, 
northeastern foothills La Hotte, 2000-4000 ft., Oct. 10-24; 
10, Camp Perrin, Oct. 8-27 ; 1, Riviere Froide, Oct. 3. Also 
the following specimens, not types : Cuba : 23, Soledad, near 
Cienfuegos, Aug. 2-12 ; Jamaica : 1, Rio Cobre, 5 mi. above 
Spanishtown, Aug. 9; 1, Blue Mts., about 4,500 ft., Aug. 
13-20. All specimens taken by myself by washing out 
gravel bars, piles of stones, and trash by clear, running 
