1000 LIST OF D1PTERA. 



spot on each tip ; wing-ribs and veins black ; fourth longitudinal 

 vein slightly waving after its junction with the middle cross-vein, 

 not angular where it joins the lower cross-vein, which is straight : 

 poisers pitchy, with yellow knobs. Length of the body 2\ lines ; of 

 the wings 3 lines. 

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



Group II. Nemopoda, Desv. Essai Myod. 743. 



Sepsis cylindrica, Meig. Dipt. v. 290, 12. Zett. Ins. Lapp. 748, 3. 

 Musca cylindrica, Fabr. Ent. Syst. iv. 336, 104. Musca, &c, 

 Geoff. Ins. ii. 536, 84. Calobata cylindrica, Fabr. Syst. Anil. 

 263, 11. Sepsis nitidula, Fall. Ortal. 21, 2. Nemopoda pu- 

 tris, Desv. Essai Myod. 744, 1. N. cylindrica, Walk. Ent. 

 Mag. i. 251, 1. Macq. Hist. Nat. Dipt. ii. 480, 1. 



a. England. Presented by F. Walker, Esq. 



b. England. 



c. France. 



d. Upsal. Presented by F. Walker, Esq. 



e . ? From Mr. Children's collection. 



Sepsis nigricornis, Meig. Dipt. v. 291, 13. Nemopoda nigricornis, 

 Macq. Hist. Nat. Dipt. ii. 481, 2. Walk. Ent. Mag. i. 252, 3. 

 a. England. Presented by F. Walker, Esq. 



Sepsis stercoraria. Nemopoda stercoraria, Desv. Essai Myod. 



2512. Walk. Ent. Mag. i. 251, 2. Macq. Hist. Nat. Dipt. ii. 



482, 7. 

 a. England. Presented by F. Walker, Esq. 



Sepsis tarsalis. Nemopoda tarsalis, Walk. Ent. Mag. i. 252, 4. 

 a. England. Presented by F. Walker, Esq. 



Sepsis rufa, n. s., mas. Fulva, abdomine ferrugineo piceoque vario, 

 palpis antennis pedibusque fulvis , alis limpidis basi subfuscis 



Body tawny, beset with a very few black bristles ; sides of the 

 face with a few bristles at the base ; epistoma not prominent : eyes 

 red ; fore part flat, its facets much larger than those elsewhere : 

 sucker and palpi tawny, the former clothed with paler hairs : feelers 

 tawny, much shorter than the face ; third joint conical, much lon- 

 ger than the second ; bristle black, slender, bare, full thrice the 

 length of the third joint : abdomen shining, much longer than the 

 chest; first segment linear, long, forming a stout petiole, ferrugi- 

 nous towards the hinder border ; second and following segments 



