no. 1632. SOME 1&EW MOSQUITOES— DYAR AND KNAB. (31 



CULEX AIKENII, new species. 



Female. — Unknown. 



Male. — Proboscis long and slender, the apical portion somewhat 

 stouter, clothed with brownish and grayish scales, giving a mottled 

 effect, without light ring; palpi very long and slender, slightly thick- 

 ened in their apical halves, clothed with brownish scales and mottled 

 with grayish ones; the second segment with a broad white ring before 

 the middle; apical half of the palpi clothed with long hairs; occiput 

 clothed with gray and pale brown scales, the margin of the eyes 

 white-scaled, the usual upright dark forked scales present : meso- 

 notum clothed with light yellow-brown and grayish scales, without 

 distinct lines or pattern; abdomen dusky-scaled above, the segments 

 broadly banded with white basally; on the sixth and seventh seg- 

 ments the bands extend along the lateral margins to the apices of 

 the segments; eighth segment mostly black-scaled above; beneath the 

 abdomen is light-scaled without bands, ciliation of the abdominal 

 margins pale, long, and abundant; veins of the wings clothed with 

 pale brownish long and narrow scales, those along the costa black; 

 legs blackish-scaled, with lighter mottling on the femora and tibi'v; 

 the tarsi show a faint bronzy luster and are not ringed; under sur- 

 faces of the femora pale-scaled ; tibiae paler scaled on the inner side. 

 Length, 3 mm. 



Three specimens, New Amsterdam, Dutch Guiana, February IT, 

 1908. (J. Aiken.) 



Type— Cat. No. 11977, U.S.N.M. 



We realize the undesirability of describing species of Culex from 

 the male sex alone, on account of the difficulty of ever associating 

 the proper female; but in this case Doctor Aiken has communicated 

 to us the larva, which makes future identification of the female easy. 

 The larva is almost the exact counterpart of our Culex regulator, de- 

 scribed from Santo Domingo, but the male adult differs strikingly 

 from the male of regulator, so that there is no question but that the 

 two forms are distinct species. It is proper to state that the larva 

 sent us by Doctor Aiken is a whole larva, not the skin from a bred 

 specimen, and therefore the authority for the association rests with 

 him. 



Named for Dr. J. Aiken, who collected the specimens and has 

 kindly sent us a series of species from Dutch Guiana. 



CULEX EUMIMETES, new species. 



Female. — Proboscis moderately long and slender, not swollen at 

 the tip, black-scaled, a rather broad white ring at the middle; palpi 

 slender, black-scaled, the apices white-scaled; occiput clothed with 

 brownish scales with brassy luster; eyes narrowly margined with sil- 



