238 BULLETIN 18 2, UNITED STATES NATIONAL IHUSEUM 



half as wide as head ; giilar sutures rather widely separated, moderately 

 diverging behind ; not distinctly punctate, but densely and very finely 

 sculptured throughout; with very fine and inconspicuous pubescence; 

 labrum not emarginate but with two fine denticles above margin at 

 middle. Pronotum one-sixth wider than long, as wide as head; sides 

 nearly parallel, posterior angles more broadly rounded ; with dense 

 ground sculpture as on head; no trace on midline. Elytra one-third 

 "wider than pronotum, a trifle wider than long; very finely and rather 

 densely punctate and vaguel}^ tuberculose, but not densely sculptured 

 as head and pronotum; pubescence fine and dense. Ahdomen rather 

 fusiform, not wider than elytra; very finely and indistinctly punctate 

 and pubescent. Male^ seventh sternite feebly divided into three lobes 

 by shallow angular emarginations, before which are clusters of hairs; 

 eighth sternite with a shallow emargination, rounded at apex and 

 with apical angles rounded. Female^ seventh and eighth sternites not 

 emarginate. Length, 1% to 2 mm. 



Type locality. — Colombia. Of atratula^ province of Buenos Aires, 

 Argentina; of pertenuis., Cayamas, Cuba; of fragilis. Guatemala; of 

 Tiihiuta, San Miguel, Pearl Islands, Panama; of delicatula., Selma, 

 Alabama. 



Tyjjes. — Either in the Hope Museum, Oxford, or the Zoologische 

 Museum, Berlin. Of atratuJa^ in the Museo Argentino Ciencias 

 Naturales, Bernard Rivadavia, Buenos Aires; of pertenuis and deli- 

 catula, in the Casey collection in the United States National Museum ; 

 of fragilis and mhmta., in the British Museum. 



Records. — The following are the records known to me: 



Cuba: (Leng and Mutchler, 1914, as pertenuis), Cayamas (Casey, 1910, as per- 

 tenuis; Schwarz, in U.S.N.M. )• 



Antigua: (Blackwelder station 275B). 



Dominica: (Blackwelder stations 237, 252). 



St. Lucia: (Blackwelder stations 213, 220D, 226). 



Trinidad: (British Museum), St. Augustine (Weber, in M.C.Z.), Tunapuna 

 (Weber, in M.C.Z.). 



South America: Brazil (British Museum), Argbintina (Lynch, 1884, as atratula), 

 Colombia (Erichson, 1840). 



Central America: Panama (Sharp, 1886, as minuta), Guatemala (Sharp, 1886, 

 as fragilis). 



North America: Alabama (Casey, 1905, as delicatula), Florida (Casey collection 

 in U.S.N.M.), Indiana (Blatchley, 1910). 



Specimens examined. — I have examined 3 specimens in the British 

 Museum, 2 in the Museum of Comparative Zoology, 5 in the Casey 

 collection and 2 others in the United States National Museum, and 

 18 collected by me in 1935-37. As the above synonymy was not 

 known to me when I visited the British Museum, I did not examine 

 the types of Sharp's two species from Central America. 



