2 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
A careful comparison of the two specimens listed by Maskell under 
the above heading with a typical example of MM. tamarindus Green 
indicates that Maskell’s specimens are identical with the species 
described by Green, although little more than half as large, and with 
the derm still membranous and the areolations not yet visible. No 
attempt has been made to determine definitely whether or not the 
species is properly placed in the genus Monophlebus. 
Genus DROSICHA Walker. 
There can, the writers believe, be no question that the species 
definitely discussed below under the heading Drosicha maskelli (Cock- 
erell), together with others from Peking, China, and elsewhere, are 
entirely typical of Walker’s genus Drosicha, as his genotype specimens 
came from North China, and certain features of his all too-brief 
description coincide exactly with characters found in the specimens 
examined. 
DROSICHA MASKELLI (Cockerell). £ 
Reference.—Fernald Cat. Coce. World, 1903, p. 19. 
This species is represented in the Maskell collection by a number 
of slides, two of ‘adult female, 1896,” one of ‘larva, 1896,” one of 
“male pupa, 1896,” one of ‘wing of male, 1896,” one of “ halterer 
of male, 1896,’ one of ‘‘eyes of male, 1896”; and by two adult 
females and one adult male mounted on black cardboard rectangles. 
and bearing Maskell’s No. 515. 
Adult female.—Dried specimens much wrinkled, maximum length 
6 mm., flat and rather thin dorsoventrally, but the body twisted; 
ground color dark brown, overlaid by a thin whitish pubescence, this 
more dense at the margin and dorsally; anterior notch plainly visi- 
ble; derm clearing almost completely on treating with potassium 
hydroxide, but the insect retaining a light brown color due to the 
presence of numerous crowded dorsal spines; maximum length of 
mounted specimens 9 mm., maximum width 5 mm.; elongate oval, 
nearly elliptical, ends uniformly and equally rounded; antennae 
remaining dark brown, elongate, tapering somewhat, 8-segmented, 
the terminal longest; legs stout, fairly large, the under side of tibia 
and tarsus with two longitudinal rows of setae, these stout at base, 
very slender for most of their length; beak rather short and stout, 
with a narrow basal collar, and the large terminal section with an 
indistinct joint, the beak therefore possibly to be considered as 3- 
segmented; with two pairs of large thoracic and seven pairs of much 
smaller abdominal spiracles, the first with a few pores clustered at 
the opening, the last small, short, somewhat tapering tubes; derm 
pores small, scattered, but fairly numerous, multilocular disk type, 
mostly circular to somewhat oval, with oval center and six locul, 
rarely with triangular center and eight loculi, or smaller and with 
