GENUS CYCLOLEPPTERON 331 



Genus IV. CYCLOLEPPTERON, Theobald. 



This genus has been separated from Anopheles for the 

 reception of a single species, at first sent by Dr. Grabham, 

 Jamaica, the characters of which are such as to easily separate 

 it from the rest of the sub-family, the scales of the wings being 

 altogether exceptional and quite different in outline from those 

 of any other Mosquitoes, except those which give the base of 

 the wing of Uranolcenia its gorgeous metallic sheen ; and though 

 somewhat similar in form, they are in reality quite different from 

 these, as they are quite without lustre, and owe their deep colora- 

 tion to a deposit of an actual pigment, the presence of which 

 has been demonstrated by chemical methods. These scales are 

 exceptionally thick, and are shaped exactly like a child's battle- 

 dore with the handle cut short off, and are so much larger than 

 those found in any member of the sub-family that they can 

 easily be separately distinguished with an ordinary hand-lens, 

 so that the genus can be perfectly easily recognised without the 

 aid of any more powerful instrument. 



The larvae are said to be much like those of other Anophelina, 

 and to assume the same position in the water. 



The following may serve as a sufficient definition of the 

 genus. 



Cycloleppteeon. — Culicidee with the palpi of about the same 



rather less distinct, lateral bare dark lines. Abdomen olive-green, with 

 yellow hairs. 



$ . — Head with vertex and scanty frontal tufts white, but dark on the 

 occiput ; palpi black, with three rather broad, white, articular bands ; 

 proboscis black, yellowish at the tip. Halteres with pale stems a,ud darker 

 knobs. 



Habitat. — EUichpur, Berars, India. 



25a. — -An. Stephensi, Glen Liston. Ind. Med. Gaz., November, 1901. 

 Wiug with the costa black, interrupted by three smaller white spots, in- 

 volving aux. and II, and showing, in addition, a large pale apical spot, 

 involving both branches of II, and two big basal dots ; the base of I, and 

 the other long veins, mainly, are white, VI, showing only two black dots ; 

 and the interior fringe has pale interruptions at each long junction. The three 

 upper joints of the fore, and all but the last of the mid and hind tarsi, with 

 narrow pale apical bands, and there are two additional bands on the first 

 fore tarsals. Thorax black, densely clothed with white scales, so arranged 

 as to leave indistinct median and lateral nude bare lines. Abdomen black, 

 unhanded, thickly covered witli yellowish liairs and scales. 



9. — Head with vertex and frontal tufts white, but dark on the occiput ; 



palpi dark, with long white tips and four pale bauds, the outermost of which 



is of considerable width. Halteres with pale stem and dark knob. Legs 



with white knee-spots, and the femora and tibiai elaborately speckled silvery. 



Habitat. —EUichpur, Bei-ars, India. 



