WEST INDIAN APHODIINAE — CHAPIN 3& 



Material examined. — Three hundred and eighty specimens, of 

 which 367 are from various localities on Cuba and 13 from localities 

 on the western half of Jamaica. No specimens have been seen from 

 any other of the West Indian Islands or from the mainland. Refer- 

 ences to this species in the literature from localities other than Cuba 

 and Jamaica probably refer to A. luteomargo. 



Except for the difference in coloration, there seems no means of 

 separating the castaneous specimens from the darker ones, and be- 

 cause there are so many intergrading specimens in any large series it 

 has seemed best to list A. cUiaia (Chevrolat) as a synonym. 



27. ATAENIUS BREVINOTUS. new species 



Dark castaneous, head, sides of pronotum, humeri, and legs light 

 castaneous, antennae and trophi paler. Anterior margin of head 

 broadly rounded each side of the median reflexed emargination, genal 

 lobes rounded. Front and vertex finely and moderately densely punc- 

 tured, the punctures becoming finer toward the margin. Pronotum 

 strongly transverse, anterior angles broadly rounded and somewhat 

 produced anteriorly, posterior angles strongly indicated, obtuse, mar- 

 ginal setae absent, marginal groove obsolete, feebly indicated across 

 base. Surface very coarsely and rather densely punctured at sides, 

 the punctures becoming finer and sparser on disk where they are of 

 two sizes. Elytral striae fine and sharply defined, strial punctures 

 distinct but not conspicuous, intervals almost flat, minutely alutaceous, 

 set with a few very fine punctures. Lateral margin subacute, epipleura 

 irregularly rugose. Humeral angle raised in a sharp vertical carina. 

 Pygidial carina with an acute median cusp which is prolonged to the 

 apex of the sclerite in a fine carina. Metasternum rough laterally, me- 

 dian area polished, finely and sparsely punctured, median gi'oove 

 shallow, ending anteriorly and posteriorly in pits. Abdominal 

 sternites smooth at middle, rouglily punctured at sides, basal trans- 

 verse rows of pits poorly defined. Anterior femur not quite twice as 

 long as broad, almost rectangular, marginal groove very fine but entire, 

 surface finely and densely sculptured. Posterior femur very slender, 

 posterior marginal groove entire, surface sparsely and moderately 

 finely punctured. Length : 5 mm. 



Type. — Museum of Comparative Zoology No. 23554. 



Type locality. — Baragua, Cuba. 



Material examined. — A single specunen collected May 7, 1926, at 

 light by C. F. Stahl (T.P.R.F. Ent. No. 457). 



This most interesting species is apparently an intermediate between 

 the typical Ataenius and typical Eupaiianu. In habitus and in the 

 short pronotum, broad anterior femur, and slender posterior femur, 

 the species bears a striking resemblance to E. castaricensis Hinton. 



