WEST INDIAN APHODIINAE — CHAPIN 17 



Material exaTninved. — Thirty specimens from Grenada, taken Jan- 

 uary 10, 1936, in cow dung 2 miles west of Grand Anse on the penin- 

 sula of Point Saline (Blackwelder station 131). I have also studied 

 a single specimen from Port of Spain, Trinidad, November 24, 1935 

 (Blackwelder station 94) and one from General Ballivian, Prov. Salta, 

 Argentina, collected by Dr. G. L. Harrington. 



3. ATAENIUS BEATTYI, new species 



Sooty black, anterior margins of head and pronotum and legs cas- 

 taneous, antennae and trophi paler. Anterior margin of head denticu- 

 late each side of the broad and shallow median emargination. Front 

 rather coarsely punctured near eyes, the punctures becoming very fine 

 toward the median anterior area, marginal area polished and free of 

 punctures, vertex very coarsely and confluently punctured. Pronotum 

 with marginal setae short and stout, marginal groove complete but 

 evanescent at anterior angles. Surface coarsely, cribrately, and sub- 

 confluently punctured, the punctures slightly smaller toward the an- 

 terior margin. Hind angles shallowly emarginate. Elytra with broad 

 and deep striae, strial punctures coarse and conspicuous, intervals sub- 

 acutely carinate except outer one, which is very deeply set, plane, and 

 strongly alutaceous, each carina with an irregular double row of fine 

 punctures but not bordered by distinct grooves. Lateral margin acute, 

 epipleura opaque. Pygidial carina with a strong median cusp, which 

 is sometimes continued across the face of the pygidium as a fine carina. 

 Sides of metasternum very rough, median area somewhat shining, 

 coarsely and densely punctured, median groove deep, abruptly ter- 

 minated behind. Abdominal sternites very coarsely and rugosely punc- 

 tured, transverse basal rows of pits on each sternite well defined, these 

 pits especially deep and elongate on last two sternites. Anterior femur 

 with perimarginal groove, the surface coarsely and rugosely sculptured. 

 Posterior femur somewhat shining, with posterior marginal groove 

 complete, surface more finely but rather densely punctured ; posterior 

 tibia with accessory spine. Length : 3.5-4 mm. 



Tyfe and paratypes. — U.S.N.M. No. 53320. 



Type locality. — St. Croix, Virgin Islands. 



Material examined. — Six specimens from St. Croix, five of which 

 were taken in dung November 29, 1936, by H. A. Beatty and K. E. 

 Blackwelder (Blackwelder station 339) ; 38 specimens from Constant 

 Spring, Jamaica, April 1931 ; one from St, Thomas, Virgin Islands, 

 October 21, 1935 (Blackwelder station 68), and one from Barbados, 

 March 12, 1936 (Blackwelder station 195). 



203107 — 40 2 



