576 A Monograph of Culicidae. 



at the base of the fourth and fifth are large flat white scales, 

 forming a long line on the fifth, a short basal one on the fourth ; 

 and some on the base of the sixth ; the fifth vein is thickened ; 

 halteres with pale stem and fuscous knob. 



Length. — 3 mm. 



Habitat — Stanley Town, New Amsterdam, British Guiana 

 (Dr. Rowland). 



Time of capture. — August. 



Observations. — Described from a damaged male, but as it is 

 so very marked it has been described. The white scaled wings 

 with the deep brown area on the upper basal part at once 

 separates it from all other American and West Indian species. 



Anisocheleomyia (?) albitarsis. Ludlow (1905). 

 Canad. Ento. XXXVII., p. 131 (1905). 



" 9 . Head brown, covered with very large, long, flat scales, so loosely 

 applied as to make the head look shaggy, a wide median white stripe 

 extending from occiput to vertex, a few white scales and two brown 

 bristles projecting forward between the eyes, a narrow white line around 

 the eyes, the scales long and flat and projecting forward over the eyes, 

 also some brown bristles ; lateral to this broad median stripe is a broad, 

 brown stripe, a narrow white stripe, a narrow brown and another narrow 

 white stripe, all of the long flat loosely set flat scales. Antennae brown, 

 verticels and pubescence brown, first segment short and somewhat dis- 

 tended, and clothed with a few flat brown scales, basal segment brown, 

 heavily scaled with rather large, flat, loosely applied white scales; palpi 

 brown with white tips, the scales being unusually long and square ended ; 

 proboscis brown scaled ; clypeus brown ; eyes brown ; the shaggy appear- 

 ance of the head makes them seem extremely small, so that instead of 

 being the larger part of the head they are quite insignificant. 



Thorax dark brown ; pro thoracic lobes covered with large white flat 

 scales, much like those on the head, and some brown bristles ; mesonotum 

 brown, covered with brown and white curved scales, those on the cephalic 

 and median parts very slender, almost hair-like, those at the sides and 

 towards the scutellum broader, a narrow line of white scales running 

 cephalad from one wing joint to the other (an inverted U), a median line 

 connecting with it at the cephalad end and extending to the scutellum, 

 two short lines from the scutellum cephalad ; pleurae brown, with heavy 

 hunches of broad long flat white scales arranged in rows; scutellum 

 brown, deeply trilobed with large long flat scales closely set on each lobe 

 so that they appear tufted ; metanotum rich brown, bare. 



Abdomen brown, covered with brown scales, and narrow white basal 

 bands on most of the segments, lacking on the first and last three 

 segments, which latter, however, have narrow lateral white spots, the 

 continuation of the ventral marking. The ventral marking is very 



