Genus Desvoidea. t37 
In length the largest larva sent was 7 mm. 
The pupa has short respiratory siphons of peculiar form shown 
in fey 76) az 
On the first abdominal segment is a distinct dorsal tuft, the 
bristles being plumose apically (fig. 76, b), the next two segments 

Fig, 7€. 
Pupa of Desvoidea fusca. n. sp. 
a, Siphon ; b, first abdominal tuft ; c, edge of anal plate. 
have long dorsal lateral bristles, on the three following somewhat 
shorter, at the sides of the sixth, seventh and eighth multi-rayed 
bristles, the first with three rays, the next with seven rays, the 
last with seven and possibly eight (one seems broken), a fourth 
tuft exists apically ; on the sternal plates is also one (or more) 
tufts of bristles. The anal flaps are peculiar, being edged with 
long, dense cilia (c). 
Length (in curved position).—4 mm. | 
Notes.—The larvae and pupae were sent by Dr. Durham ; but 
in the same tube were larvae of a Culex and a pupa differing from 
the one described here ; also eggs in rafts. 
