276 BULLETIN 182, UNITED STATES NATIONAL MUSEUM 



Records. — The following are the records known to me : 



Cuba: Cayaraas (Schwarz, in U.S.N.M.), Soledad (Darlington, in M.C.Z. and 

 U.S.N.M.), Rangel (Bierig, in U.S.N.M. as caribacus). 



Specimens eoeamined. — I have seen the four types as above, the 

 two "cotypes" of caribaeus, and three other specimens from the 

 Museum of Comparative Zoology. 



Rejiiarhs. — This f^pecies is distinguished by its dense ground sculp- 

 ture, its sparse umbilicate punctures, and other minor characters. 

 It belongs in the subgenus Platymedon. 



One of Dr. Darlington's specimens was found under a stone in 

 company with ants of the species Odontomachus haematoda 

 (Linnaeus). 



7. MEDON CORDATUM, new species 



Description. — Eufocastaneous. Head one-sixth longer than wide, 

 not emarginate behind; sides parallel, nearly straight, moderately 

 broadly rounded into base; eyes small, about three and a half times 

 their length from base; labrum with a triangular emargination 

 nearly twice as broad as deep with the outer angles rounded, without 

 denticles; gular sutures approximate and parallel from near base to 

 near apex; with somewhat irregular but moderate umbilicate punc- 

 tures separated by one to two times their diameter; with rather 

 feeble scaly ground sculpture. Pronotum as wide as head and as 

 long as broad; sides rather strongly converging behind from anterior 

 quarter and rounded into base; midline feebly canaliculate along 

 middle; punctured and sculptured as head. Elytra with punctures 

 about as coarse as on pronotum but a little denser; surface uneven 

 but not distinctly sculptured. Abdomen with fine punctures not 

 dense and with a few coarse punctures on each segment; without 

 distinct ground sculpture. 3Iale, eighth sternite with a broad tri- 

 angular emargination, three times as wide as deep. Female^ un- 

 known. Length, 4i/^ mm. 



Type locality. — Cuba, Buenos Aires, Trinidad Mountains, eleva- 

 tion 2,500 to 3,500 feet. 



Types. — Hololyiie, male, in the Museum of Comparative Zoology, 

 collected on May 8-14, 193G, by Dr. P. J. Darlington. 



Records. — The following is tlie only record known to me : 

 Cuba: Buenos Aires (Darlington, in M.C.Z. ). 



Specimens examined. — I have seen only the unique type. 



Remarhs. — This species is very di.stinct because of the elongate 

 parallel head and the ground sculpture of the head and pronotum. 

 It belongs in the subgenus Platymedon. 



I have received no record of its habits. 



