A Synoptical View of the Mosquitoes of British Guiana. 193 
(2.) Fork cells medium. 
Head : curved scales broadish upright scales black 
and yellow. 
Wing : median vein scales denser on 5th vein. 
GENUS PROTOCULEX. 
Felt. 
c.c. Wing : lateral vein scales narrow linear or lan- 
ceolate ; fork cells long in female ; costa not 
markedly spinose. 
Genus CULEX" 
Linnzus. 
Proboscis with a tuft of hairs in middle. 
GENUS TRICHOPRONOMYIA. 
Theobald. 
b.b. Seutellum with narrow curved and spatulate scales. 
Wing : fork cells short. 
Genus GUALTERIA. 
Lutz. 
c.c.c. Wings : lateral vein scales elongated broadish 
Fork cells long. 
1. Brown species BS ore .. GENUS TAENIORHYNCHUS. 
Arribalzaga. 
2. Yellow species 5 aS s GENUS CHRYSOCONOPS. 
Goeldi. 
c.c.c.c. Wing : lateral vein scales large broad asymmetrical 
GENUS MANSONIA. 
Blanchard. 
II. Legs with femora swollen apically and basally 
Head : narrow curved scales on middle flat scales 
at sides only 
GENUS MELANOCONION. 
Theobald. 
To the Genera above described two new ones will probably fall to be added. One is a domestic 
species which comes near Gnophodeomyia, but has the femora swollen apically and basally as in 
Melanoconion. I have sent specimens to Mr. Newstead, of Liverpool, and await his opinion. The 
larvae are found in houses, in cisterns and bath water and the adults have a peculiarly disrespectful 
affection for tender integuments, the lips, nostrils or other exposed mucous membrane receiving their 
attention. The name Asebeomyia would be proper for this new genus. Into this genus will also 
come my Culex epira (B.G. Medical Annual for 1908, p. 8). The other is a near ally of Culicelsa, 
Specimens of which I received from Mr. W.H. B. Moore. [ should place it in this genus but for the 
long first forked cellof wing. The larva which have also been kindly sent me by Mr. Moore show a 
peculiar development of the maxilla which are armed at the apex with stout hairs curved at the ends 
quite differing in this respect from any culicine larva Ihave seen. The long narrow syphon is also 
distinctive in being armed with five spine like chaetae on one side near the apex, a tuft of fine hairs 
on the other side. = some respects this larva is similar to Pectinopalpus fuscus Theobald? (I) 
as figured by Mr. Wesche from larvae collected at Lagos by Dr. W. M. Graham. (Bull. Ent. Research. 
Vol. I, No. 1, 1910, Plate II.) The adult in shape of femora and wing scales comes near 
Culicelsa, and the thoracic ornamentation is like annulirostris Skuse; but the wing venation 
separates it from Felt’s genus. 
