62 A Monograph of Culicidae. 
typical Cycloleppteron scales. Later he sent me several 9’s, 
which he came to the conclusion were the ?’s of the male here 
described, and mentions that the 9 wing sent was that of a 
male C. mediopunctatus. These 9’s presented no Cycloleppteron 
characters, and moreover are black and silvery grey, not the 
brilliant golden hue seen in the male Cycloleppteron. The ? of 
C. Grabhamii has true Cycloleppteron scales, but the ?’s sent by 
Lutz have none whatever ; in fact, I feel certain that they are 
not the ?’s of this species, but quite distinct, although they 
have assumed the general appearance of the Cycloleppteron. 
Moreover, the wing sent me as that of a 9? certainly differs 
from the ¢’s I have examined, and I venture to think Dr. Lutz 
was correct in his first surmise, the difference being noticeable 
in the relative positions of the fork-cells and, to some extent, the 
cross-veins, which, however, may be variable. (Vide fig. 37.) 
Genus 4. STETHOMYIA. Theobald. 
(Jour. Trop. Med. V., p. 181, 1902.) 
(Plate VIL) 
Allied to Anopheles. Head with a patch of flat scales in 
front on the middle line, and covered with numerous bristles 
and very thin upright forked scales almost like bristles; palpi 
in the 9 long and thin, four-jointed, the terminal joint slightly 
swollen near the apex. Thorax bristly, but apparently nude ; 
prothoracic lobes bristly and mammillated. Abdomen very 
pilose, hairs of two sizes, the smaller ones in rows. Wings 
unspotted, the veins clothed with long lancet-shaped scales 
(Plate VII.). Legs long and thin, with simple, equal ungues in 
the @. Palpiof the male much swollen ; claspers of the genitalia 
long; ungues of fore-legs very unequal, the longer uniserrated ; 
the mid and hind small, equal, and simple. 
This genus differs from Anopheles in having some flat scales 
on the head and in the peculiar mammillated structure of the 
prothoracic lobes. A single species only is known, occurring in 
British Guiana and Para. 
STETHOMYIA NIMBA. 0. sp. 
Black, with a silvery line down the middle of the mesonotum 
and a silvery line around the sides of the mesonotum. Legs 
