50 C. H. TYLER TOWNSEND. 



18-'21. AVashington, D. C, one female and one male, May 5 and 

 1!). Takonia, D. C, one female, September 7. These all agree well 

 with Williston's descriptions. 



57. Eri!*talis tricolor Jaeun. 



Guanajuato, Mex. (A. Duges). One female ; til)ia? yellow basally. 



58. Eristalis viiietoriim F. 



Bath, Jamaica (Swainson). One female measuring 13 mm., and 

 one male measuring 9 mm. The median fiicial stripe in both speci- 

 mens shows only as two disconnected markings ; a section on fecial 

 tubercle elongate-pointed above,. and a median spot on oral margin. 

 These with the cheeks and a subtriangular marking at posterior base 

 of antennse, are shining pale metallic brownish. All the rest of 

 face and frontal triangle in male is whitish pollinose and whitish 

 pilose. Otherwise Williston's description agrees well, exce2:)t that 

 the female has the wings quite flavous on middle portion. The distal 

 portion of first posterior cell contains a grayish cloud, as well as the 

 marginal and submarginal cells. The hind tibije of both are dis- 

 tinctly ciliate. The prescutellar fascia is semicircular and almost, or 

 quite, joins ends with the presutural, following the edge of the thorax 

 around. 



Mr. C. W. Johnson, in litt., determines this sj^ecies from Port 

 Antonio. This species was previously recorded from Jamaica by 

 Walker under the synonym oi' vvarum. Specimens in C. B. Taylor's 

 coll., Jamaica. 



Trinidad (F. W. Ulrich). One female. The yellow of second 

 abdominal segment is more extensive than in the Jamaican specimens. 



59. Eristalis sp. No. 21, Williston, Biol. Ceut.-Amer., Dipt, iii, p. 65. 

 Chacaltianguis, on the Papaloapam River, State of Vera Cruz, 



Mexico. One male taken by the writer in sweeping, Dec. 31, 1892. 

 With little doubt this species. The antennae are more brownish red. 

 Abdomen is rather reddish yellow, and the black of second segment 

 is exjianded on base of abdomen into a bar forming a T-shaped 

 marking. Agrees exactly otherwise with Williston's short description. 



60. Meromacrus cinvtiis Drury. 



Jamaica (Bowrey). Four (two S , two 9 ) from Cinchona, 5000 

 feet (W. Fawcett). Eleven specimens, four males and seven females. 

 Length 15-17 mm. Scutellum wholly yellowish brown, without any 

 red tinge, but with slight blackish reflections in oblique lights. The 



