WEST INDIAN APHODIINAE — CHAPIN 27 



anterior angles, shorter and sparser across base, marginal groove 

 entire. Surface sliining, set with punctures of two sizes : Fine punc- 

 tures more or less evenly distributed over entire surface and coarse 

 ones confined mainly to the lateral and basal areas. These in the 

 female are even coarser than in the male. Elytral striae fine 

 and deep, strial punctures as in J., darlingtoni, intervals moderately 

 convex, finely, irregularly, and sparsely punctulate. Lateral margin 

 subcarinate, epipleura shining, with a row of ill-defined punctures 

 close to the outer edge. Pygidial carina with strong median cusp 

 in male, a feeble one in female ; further, the male is furnished with 

 a cusp on apical margin opposite to the cusp on the carina, these 

 cusps often connected by a very fine carina. Metasternum shining, 

 median portion elevated and with a patch of setigerous punctures 

 on posterior half, the setae short and inconspicuous, median groove 

 abruptly terminated anteriorly. Abdominal sternites shining, mi- 

 nutely punctulate on median portion, sparsely but much more 

 coarsely punctured laterally, basal transverse row of pits on each 

 sternite fine. Anterior femur with fine perimarginal groove, the 

 surface finely and sparsely punctured. Posterior femur without 

 marginal groove, almost impunctate; posterior tibia without acces- 

 sory spine. Length : 4r-4.5 mm. 



Type and paratypes. — ^U.S.N.M. No. 53324. Paratypes : Museum 

 Comparative Zoology No. 23556. 



Type locality. — Near Spanish Town, Jamaica, British West Indies. 



Material examined. — Type and 15 paratypes from near Spanish 

 Town, February 2 (station 377) ; two paratypes from Montego Bay, 

 February 16 (station 407) ; one paratype each from Kingston, Feb- 

 ruary 6 (station 391), and Black River, February 24 (station 416), 

 all collected by Blackwelder and Chapin, 1937; two paratypes from 

 Kingston, August 27-29, 1934, P. J. Darlington (in collection Museum 

 of Comparative Zoology). 



In addition to the type series 70 specimens have been studied from 

 the following islands: Hispaniola, Puerto Rico, St. Croix, Antigua, 

 Dominica, St. Lucia, Barbados, St. Vincent, Carriacou, and Grenada. 



Compared with a specimen of liogaster from Teapa, Tobasco, Mex- 

 ico, H. H. Smith, received from the British Museum, the following 

 differences are noted: There is a break in the even curve of the 

 pronotal margin from middle of base to anterior angle in liogaster, 

 not present in the West Indian species. In liogaster the apical 

 portion (from carina to apex) of the pygidium is about twice as long 

 as in the corresponding sex of edwardsi, and the cusps are very much 

 reduced. The median portion of the metasternum of liogaster does 

 not appear to carry setigerous punctures and the posterior femur has 

 a distinct groove, similar to that of A. darlingtoni. Dedicated to 

 W. H. Edwards, Government entomologist of Jamaica. 



