358 BULLETIN 182, UNITED STATES NATIONAL MUSEUM 



2. STILIPHACIS TRINITATIS, new species 



Description. — Rufopiceoiis, apical spot of elytron and penultimate 

 sternite testaceous. Head ovate, hind angles completely rounded, base 

 emarginate above neck; eyes separated from base by a little more than 

 their length ; labrum with two slender denticles, longer than distance 

 between them, these flanked by a pair of smaller denticles ; umbilicate 

 punctures coarse and dense, rarely uniting, often irregular in shape: 

 without ground sculpture on the intervals. Pronotwn about one- 

 seventh longer than wide, not prolonged in front, widest at anterior 

 third, sides rather strongly converging to narrowly rounded basal 

 angles; sides rather coarsely tuberculate; umbilicate punctures a little 

 smaller than those on head, occasionally uniting but not definitely in 

 longitudinal rows; without ground sculpture. Elytra a little wider 

 than long, one- fourth longer than pronotum; with rather coarse punc- 

 tures separated by about one-third their diameter by feebly convex 

 intervals; without distinct ground sculpture. Ahdomen finely and 

 obsoletely submuricately punctate; surface uneven. MaJe^ unknown. 

 Female, sternites unmodified. Length, 3% mm. 



Type locality. — Trinidad, Mount Tucuche. 



Types. — Holotype, female, in the Museum of Comparative Zoology, 

 collected in April 1929 by Dr. P. J. Darlington. 



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



Trinidad: Mount Tucuche (Darlington, In M.C.Z.). 



Speciiyiens examined. — I have seen only the holotype. 

 Remarks. — In addition to its unusual size, this species may be dis- 

 tinguished by its labrum and its rounded head. 

 I have received no record of its habits. 



3. STILIPHACIS DENTATUS. new species 



Description. — Rufotestaceous with elytra a little paler to piceous 

 with elytra testaceous and marked with black on the disk and apically 

 along the suture. Ilead modeivately large, suborbicular, one-fifteenth 

 wider than elytra; eyes moderate, not very prominent, at about their 

 length from base; sides behind eyes rather broadly rounded into baj^e; 

 umbilicate punctures distinct and dense, frequently irregular in shape, 

 witliout ground sculpture on the intervals; labrum at middle with two 

 acute teeth much longer than distance between them, and flanked by a 

 pair of smaller ones. Pronotum- about as long as wide, not prolonged 

 in front, about three-fourths as wide as elytra, widest at anterior 

 third, strongly narrowed in front, moderately narrowed behind to 

 rounded angles; sides coarseh' tubeiculate; umbilicate punctures very 

 irregular but distinct; without ground sculpture. Elytra about as 

 wide as long, nearly one-fourth longer than pronotum ; with moderate 

 slightly elongate punctures separated by their diameter or less; in- 



