Genus Stethoinyia. 65 
down every morning to him by the native boys at Pickersgill, 
further down the river. In the position it took up when 
resting it resembles a Culew, though its palps were. as long as 
the proboscis. The legs are very long and fine and easily 
break off. Dr. Low never observed it by day, so it is evidently 

Fig. 39. 
Stethomyia nimba. Nn. sp. 
Fore and mid ungues of ¢. 

Fig. 40, Fig. 41. 
Stethomyia nimba. Nn. sp fof palp of 
$ genitalia Stethomyta nimba, 
nocturnal in its habits and must feed greedily, for in the 
morning its stomach is full of blood. The females predominated 
largely and soon died in captivity. Thirty specimens were dis- 
sected by Dr. Low to see if they took any part in the spread 
of Filaria demacquaii, but he obtained negative results (vide 
Brit. Med. Journal, 25.1.02). 
VOL. III. F 
