20 PROCEEDINGS OF THE NATIONAL MUSEUM vol.89 



deep. Side portions of pronotiim strongly swollen, from anterior 

 angles to points directly above the origins of the third elytral striae, 

 so that, as seen from above, the posterolateral margin is concealed. 

 Surface moderately densely and very coarsely punctured ; in general, 

 each puncture is separated from its nearest neighbor by less than its 

 diameter. Elytral striae coarse and deep, strial punctures coarse and 

 slightly off center, so that they encroach on the inner margin of each 

 interval. Intervals subconvex, alutaceous, each with a single row of 

 moderately coarse punctures along its outer margin. Lateral margin 

 subacute, epipleura subopaque and coarsely punctured. Pygidial 

 carina with a moderately strong median cusp. Metasternum laterally 

 opaque, finely and densely sculptured, median area shining, coarsely 

 and sparsely punctured, median groove deep, abruptly terminated 

 both anteriorly and posteriorly. Abdominal sternites coarsely and 

 sparsely punctured, basal transverse rows of pits sharply defined. An- 

 terior femur with perimarginal groove, surface coarsely and densely 

 punctured. Posterior femur with trace of marginal groove near in- 

 sertion of tibia, surface shining, moderately coarsely and sparsely 

 punctured ; posterior tibia without accessory spine. Length : 3.5 mm. 



Type and paratype. — Museum of Comparative Zoology No. 23555. 

 Paratype : U.S.N.M. No. 53322. 



Type locality. — Aguadores, Prov. Oriente, Cuba. 



Material examined. — Type and two paratypes from the above lo- 

 cality, June 6, 1936, Dr. P. J. Darlington, Jr. 



7. ATAENIUS ABDITUS (Haldeman) 



Aphodius {Oxyomus) ahditus Haldeman, 1848, Journ. Acad. Nat. Sci. Philadel- 

 phia, ser. 2, vol. 1, p. 106. 



Ataenivs abditus Gemminger and Habold, 18G9, Catalogus coleopterorum . . ., 

 vol. 4, p. 1066. — Schmidt, 1922, Das Tierreich, pars 45, Aphodiinae, p. 449. 



Piceous to black, anterior margin of head and pronotum and legs 

 castaneous, antemiae and trophi paler. Anterior margin of head 

 finely denticulate each side of shallow median emargination, lateral 

 margin nearly straight from denticles to genae. Front and vertex 

 moderately coarsely and rather densely punctured, the punctures be- 

 coming finer anteriorly, extreme anterior margin feebly rugose and 

 free from punctures. Pronotum with marginal setae short and incon- 

 spicuous, marginal groove moderately fine across base, broader lat- 

 erally. Surface shining, coarsely and rather densely punctured, the 

 punctures rather sparse on disk and slightly finer anteriorly. Elytral 

 striae moderately fine and deep, strial punctures rather coarse and 

 off center, encroaching on the inner margin of each interval. Inter- 

 vals nearly flat, finely alutaceous, each with a single row of fine 

 punctures along its outer margin. Lateral margin acute, epipleura 



