APPENDIX. 337 



from the third. Hind wings whitish cinereous, slightly 

 hyaline; veins and fringe slightly yellowish. Length 

 of the body, 7 lines ; of the wings, 20 lines. 



This species may form a new genus. It differs some- 

 what from Halesidota in the structure of the veins of 

 the fore wings. 



LIST OF DIPTEEA. 



CULICID^E. (Steph.) 



CULEX. (Linn.) 



Culex. 



#pinguis. (Walk.) 



ASILID.E. (Leach.) 

 LAPHRITES. (Walk.) 



LAPHRIA. (Fabr.) 



Laphria. 



"Columbia. (Walk.) 



(ESTRIDJE. (Leach.) 



CUTEREBBA. (Clark.) 



Cuterebra. 



*approximata. (Walk.) 



MUSCIDJE. (Leach.) 

 TACHIXIDES. (Walk.) 



ETJRIGASTER. (MaCq.) 



Eurigaster. 



*septentrionalis. (Walk.) 



Order DIPTEEA. 



Fam. CDLICID.E. (Steph.) Genus CULEX. (Linn.) 

 Culex pinguis. N. S. 



fo&m. Cervinus, robustus ; rostro apicern versus nigro ; 

 abdominis pube subaurata ; pedibus robustis pallidiori- 

 bus ; alis cinereis, venis fulvis subpilosis. 



Female. Fawn-colour, stout. Proboscis much longer 

 than the head, and the thorax black towards the tip. 

 Abdomen with slightly gilded down. Legs stout, paler 

 than the body ; tarsi darker. Wings cinereous ; veins 

 tawny, slightly pilose ; radial and subapical veins, with 

 long forks. Length of the body, 3 lines ; of the wings, 

 7 lines. 



VOL. II. Z 



