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 DIPTERA. 
CULICIDA. (Steph.) CESTRIDAZ. (Leach.) 
cuLex. (Linn.) CUTEREBRA. (Clark.) 
Culex. Cuterebra. 
xpinguis. (Walk.) *approximata. (Walk.) 
ASILID. (Leach.) MUSCIDA. (Leach:) 
LAPHRITES. (Walk.) TACHINIDES. (Walk.) 
LAPHRIA. (Fabr.) EURIGASTER. (Macq.) 
Laphria. Eurigaster. 
*Columbia. (Walk.) *septentrionalis. (Walk.) 
Order DIPTERA. 
Fam. Cuticipz. (Steph.)—Genus Curex. (Linn.) 
Culex pinguis. N.S. 
Fem.—Cervinus, robustus; restro apicem versus nigro; 
abdominis pube subaurata; pedibus robustis pallidiori- 
bus; alis cinereis, venis fulvis subpilosis. 
Female.—F awn-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, 34 lines; of the wings, 
7 lines. 
VOL. II. Zz 
