WEST INDIAN APHODIINAE — CHAPIN 33 



The tenth interval (submarginal) is alutaceous throughout its length. 

 The lateral margin is carinif orm and very prominent ; the epipleura 

 alutaceous and complete. Pygidial carina with strong median cusp. 

 Mesosternum strongly shagreened, clothed with short hair, with a 

 short low carina between the coxae. Metasternum polished at middle, 

 roughened by dense punctation at sides, median groove abruptly ter- 

 minated before and behind, polished area sparsely and irregularly 

 punctured. Abdominal sternites coarsely and closely punctured, with 

 transverse basal rows of contiguous pits. Anterior femur beneath 

 with deep perimarginal groove, anterior tibia tridentate, the basal 

 tooth less acute than either of the others. Posterior femur with 

 groove on hind margin, which is complete in male and which reaches 

 from the tibial joint three-fourths of the distance to trochanter 

 in female ; posterior tibia with accessory spine. Length : 4-5 mm. 



Type. — ^In the British Museum. 



Type locality. — St. Vincent (south end), British West Indies. 



Material examined. — Two hundred and thirty-four specimens from 

 the West Indies have been studied. The species is widely distributed 

 in the islands and eventually may be found on all islands. Specimens 

 liave actually been seen and studied from the following islands: 

 Bahamas, Jamaica, Hispaniola, Puerto Rico, St. Thomas, Tortola, 

 St. Croix, St. Kitts, Antigua, Montserrat, Guadeloupe, Dominica, 

 Barbados, St. Vincent, Grenada, and Trinidad. 



21. ATAENIUS JAMAICENSIS, new species 



Dark castaneous to piceous, with vertex, pronotum except extreme 

 margins, scutellum, and first to fifth and seventh elytral interspaces 

 in part darker. Anterior margin of head subhemihexagonal, slightly 

 depressed at middle, the angles rounded, front rather coarsely asperate, 

 the asperities tending to form transverse ridges at middle, interocular 

 area finely and not densely punctured, vertex polished, without visible 

 punctures. Pronotum with marginal setae becoming very short across 

 base, marginal groove narrow before the scutellum and progressively 

 widening to its termination at the anterior angles. Surface polished 

 at disk, with a fine scalelike ground sculpture at sides, rather coarsely 

 and densely punctured, the punctures finer and sparser along median 

 line which is sometimes devoid of punctures. Scutellum and elytra 

 with scalelike ground sculpture, the former devoid of punctures, the 

 latter with a coarse seriate punctation. Intervals somewhat convex, 

 with a few scattered fine punctures, each of which bears a minute seta. 

 Epipleura entire to apices of elytra, coarsely and irregularly wrinkled. 

 Transverse carina of pygidium with triangular median cusp, margin 

 polished, area bounded by margins and transverse carina with very 



20310T— 40 3 



