LIST OF DIPTERA. 609 



Helophilus crassipes. Eristalis crassipes, Fair. Syst. Anil. 237> 



22. Wied. Auss. Zweif. ii. 157, 8. Macq. Dipt. Exot. ii. 31, 

 1, pi. 8, /. 1. E. pachymerus, Wied. Zool. Mag. iii. 17, 24. 



a. South Africa. Presented by Dr. A. Smith. 



b. -? 



Helophilus iEsacus, n. s., mas. Fulvus, pectore cinereo, abdomine 

 rufo-fusco, apice rufo, antennis pedibusque piceis, genubus rufis, 

 alis subcinereis basi et ad costamfulvis macula magna subcostali 

 fusca. t 



Body tawny: head white in front; clypeus prominent; a shin- 

 ing dark ferruginous space about the base of the feelers, and a spot 

 of the same colour between them and the clypeus : mouth pitchy : 

 feelers pitchy ; bristle tawny : eyes black ; facets on the fore part of 

 the crown larger than those elsewhere : chest thickly clothed with 

 tawny down; breast grayish: abdomen obconical, reddish brown, 

 covered with dark tawny bloom, as broad as the chest and much 

 longer, red at the tip : legs pitchy, clothed with short black hairs ; 

 knees red ; foot-cushions dull tawny ; claws red, with black tips : 

 wings slightly gray, bright tawny at the base, tawny along the fore- 

 border, at two-thirds of whose length there is a large brown spot ; 

 wing-ribs and veins bright tawny, the latter pitchy in the gray part 

 of the wing ; poisers tawny. Length of the body 6 lines ; of the 

 wings 10 lines. 



a. Sierra Leone. Presented by the Rev. D. F. Morgan. 



Eristalis, Latreille. 



Eristalis sepulcralis, Fabr. Syst. And. 245, 61. Sckrank, Faun. 

 Boic. iii. 2432. Meig. Dipt. iii. 383, 1. Macq. Hist. Nat. 

 Dipt. i. 506, 17. Musca sepulcralis, Linn. Faun. Suec. 1835. 

 Syst. Nat. ii. 991. Gmel. Ed. Syst. Nat. v. 2878, 73. M. in- 

 terpunctus, Harr. Ex. 59, pi. 15, /. 11. M. ater, Harr. Ex. 

 58, pi. 15, /. 11. (fern.) Syrphus sepulcralis, Fabr. Sp. Ins. ii. 

 431, 51. Ent. Syst. iv. 303, 91. S. tristis, Fabr. Ent. Syst. 

 iv. 303, 92. Panz. Faun. Germ, lxxxii. 16. Fall. Syrph. 29, 



23. Eristalis tristis, Fabr. Syst. Antl. 245, 62. Elophilus 

 tristis, Latr. Gen. Crust, iv. 324. 



a. England. 



b. France. 



c. ? From Mr. Children's collection. 



3 H 3 



