MONOGRAPH OF WEST INDIAJS STAPHYLINIDAE 297 



ground sculpture above and Ix'hind bu( merely coriaceous in front; 

 labrum broadly rounded bui very feebly emarginate at middle. 

 Pronotvm as broad as long, evenly rounded at sides bul more nar- 

 rowed in front; with feebly umbilicate punctures separated by less 

 than their diameter and obscured by fine ground sculpture. Elytra 

 rather finely and indisthictly subnnii-icately punctate, surface some- 

 what mieven but punctures not abrupt; without ground sculpture. 

 Abdomen finely sparsely and minutely submuricately punctured; 

 without ground sculpture. Mcde, vertex behind the eyes with a cir- 

 cular depression divided longitudinally by a strong carina; eighth 

 abdominal sternite broadly and feebly emarginate. Female^ vertex 

 umnodified; eighth sternite not emarginate. Length, 2i/^ to 3 mm. 



Tyi)e locality. — Grenada. 



Types. — Twelve specimens (one labeled type) in the British 

 ^Museum. 



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



Grenada: (Craneron, 1913; Leng and Mutchler, 1917; British Museum). 



Specimens examined. — I have seen the 12 examples in the original 

 series in the British Museum and 7 in the collection of Dr. Cameron. 

 One example was bori-owed from the British Museum for further 

 study. 



Renwrhs. — The male of this species is easily recognizable at a 

 glance by the unusual carinate head and the posterior position of the 

 carina. 



f find no record of its habits. 



2. MONISTA TRINITATIS. new species 



Description. — Rufous or rufotestaceous, with apex of elytra 

 broadly paler. Head subhexagonal; eyes small but prominent, at 

 over twice their length from base; vertex not modified (in female); 

 labrum broadly rounded but feebly emarginate at middle; with rather 

 coarse punctures nearly obsolete throughout, nearly tuberculose 

 basally; with irregular ground sculpture on the clypeus. Pronotwm 

 one-twelfth longer than wide, widest at anterior two-fifths, thence, 

 strongly narrowed to neck, moderately narrowed to base ; with punc- 

 tures as on head, but without distinct ground sculpture. Elytra with 

 ])unctures less distinct than pronotum, the intervals smooth and flat; 

 without distinct ground sculpture. Abdomen finely sparsely and 

 minutely submuricately punctate; without ground sculpture. Male^^ 

 unknown. Female, sternites unmodified. Length, 21/;} mm. 



Type locality. — Trinidad, foothills north of Tunapuna. 



Types. — Holotype in the Museum of Comparative Zoology; one- 

 paratype in the United States National Museum (No. 52357); col-, 

 lected on June 29, 1935. and May 25, 1935. by N. A. Weber. 



449008—42 20 



