28 PROCEEDINGS OF THE NATIONAL MUSEUM vol.89 



15. ATAENIUS INSULICOLA, new species 



Piceous; head, anterior margin of pronotum, humeri, and under- 

 parts castaneous, antennae paler. Anterior margin of head broadly 

 rounded each side of the moderate median emargination, front mod- 

 erately convex, in male finely and rather sparsely punctured, finely 

 and sparsely rugulose, in female almost the same but with the rugu- 

 losities a little stronger, vertex sparsely but slightly more coarsely 

 punctate. Pronotum with marginal setae fine and regular, those 

 across base very short and inconspicuous, marginal groove entire, 

 posterior angles rounded but evident. Surface shining, set with a 

 mixture of coarse and fine punctures, the coarse punctures absent 

 from the anterior area of the disk. Punctation similar in the sexes. 

 Elytral striae deep, strial punctures rather coarse, intervals moder- 

 ately convex, finely and irregularly punctulate. Lateral intervals 

 more coarsely punctured and less shining. Lateral margin subcari- 

 nate, epipleura dull, rather coarsely sculptured. Pygidial carina with 

 feeble median cusp. Metasternum shining, lateral portions smooth 

 except for a small sculptured area near extreme lateral margin, 

 median portion slightly concave, sparsely but not finely punctured, 

 median groove deep, abruptly terminated anteriorly and posteriorly. 

 Abdominal sternites coarsely sparsely punctured at sides, very 

 sparsely punctured along median line, basal transverse row of pits 

 on each sternite sharply defined. Anterior femur with perimarginal 

 groove, surface rather coarsely punctured. Posterior femur without 

 marginal groove, surface shining, sparsely and finely punctulate; 

 posterior tibia without accessory spine. Length : 4-4.5 mm. 



Type.—U.S.^M. No. 53325. 



Ti/pe locality. — St. Vincent, British West Indies. 



Material eocamined. — Tlie type (male) and 13 paratypes of both 

 sexes from St. Vincent. Four specimens from Milepost 8l^ on Wind- 

 ward Road, February 19, 1936 (station 181), and 10 from a point 

 on the main road 3 miles southeast of Kingstown, February 23, 1936 

 (station 185), both lots collected by Dr. R. E. Blackwelder. 



This species is similar in general appearance to A. liogaster Bates 

 but is separated from that species by the less punctate metasternum 

 and the absence of the marginal groove on the posterior femur. 



16. ATAENIUS CRIBRITHORAX Bates 



Ataenius cribrithorax Batks, 1887, Biologia Centrali-Americana, Coleoptera, vol. 

 2, pt. 2, p. 95. 



Piceous to black, head and pronotum with castaneous areas of 

 indefinite extent, legs castaneous, antennae and tropin paler. Anterior 

 margin of head broadly rounded each .side of the shallow median 



