AEDES CALOPUS 831 



broad basal white bands, those of the first two joints being especially broad and 

 distinct; the basal joint short, the second forming more than half the entire length 

 of the appendage, the last two of equal length. Thorax (when denuded) dark brown. 

 In some specimens, there are traces of white scales, so that, in all probability, there 

 are white markings in unrubbed specimens. There are also white spots on the sides, 

 corresponding to the white marks on the coxae, and also beneath the insertion of the 

 wings. Scutellum dark brown, glabrous, or denuded. 



Legs diilering comparatively little in length, those of one specimen being 6.1, 6.5, 

 and 7.5 mm. for the fore, middle and hind pairs respectively; brindled with light 

 and dark brown, with the coxae covered with pure white scales externally; the 

 femora paler at the base, especially internally, where they are nearly white, with 

 a minute white knee spot, and an inconspicuous basal white band to the two first 

 tarsal joints on all the legs: the remaining tarsal joints being unhanded. The fore 

 and hind claws are each provided with a well-marked basal tooth, those of the fore 

 leg being, however, much the larger: the claw of the middle leg is untoothed, but is 

 otherwise as large as that of the fore. 



Wings hyaline, with dark scales; auxiliary, joining the costal opposite the super- 

 numerary transverse vein, and considerably before the level of the tip of the 

 fifth longitudinal; supernumerary and middle transverse veins at the same level. 

 Subcostal transverse, much nearer the origin of the second longitudinal than to the 

 numeral transverse; posterior, placed more than twice its length behind the middle 

 transverse, and of about equal length, the former joining the anterior branch of 

 the fifth longitudinal a good deal before its middle; anterior branch of the fifth 

 longitudinal originating considerably before the tip of the sixth, and Its tip joining 

 the posterior border well beyond the base of the second posterior cell, which latter 

 is considerably shorter than the first submarginal, although much wider. Halteres 

 pale-tinted. 



Abdomen black, with a median white line, broadening at the front of each of 

 the first five segments, into a distinct, broad band, and with a barely perceptible 

 white fringe to the hind border. The sixth segment is brindled with white and 

 black scales in the middle, and has a white spot on either side; the seventh is 

 entirely black, and there is a minute terminal white spot on the last. Ventrally, 

 the white forms the ground colour, with sinuous black lateral lines, which meet to 

 form a transverse band on the fourth segment. The last segment is armed with 

 exceptionally large, incurved claspers. 



The above applies specially to the male; the female is larger in nearly all 

 dimensions, except the length of abdomen, which, however, is much stouter, the 

 thorax and wings greatly exceeding those of the male in size. The antennae are 

 black throughout, and appear proportionally longer than those of the male. The 

 palpi are also black and without bands; the two proximal joints shorter than 

 the distal, being together barely equal to one of the latter, which are subequal. 

 The general coloration of the female is altogether less brilliant, the dark parts 

 being much paler, and the whites impure. The dorsum of the abdomen is dark grey- 

 ish brown, with an ill-marked light basal band to each segment, and ventrally, the 

 brown lateral lines are joined by cross bands on nearly every segment, the white 

 parts, external to the sinuous dark line, giving the appearance of a series of lateral 

 light spots. 



Habitat. India (Calcutta). Major Ross, I. M. S. 



Note. This species closely resembles, but is not I think, identical with C. 

 taeniatus, described by Wiedemann, from Savannah. The dorsum of the thorax is 

 so denuded of its scales in all my available specimens, that the characteristic adorn- 

 ment of the female of Wiedemann's species, which is specifically stated to be 

 noticeable in only unrubbed specimens, would not be in any case discernible. These 

 markings were, however, darker than the grounding, while there are suflacient 

 remains to show that the adornment of the present species was white on a dark 

 ground, though not to enable one to judge its exact character. On the other hand, 

 I can make out no trace of the snowy scutellum of C. taeniatus, and though the 

 abdomen of several of my specimens is in very fair condition, it does not correspond 

 to the description of that species. 



The palpi of the male correspond, but those of the female are black, or at most, 

 show only a trace of white at the base of the terminal joint, instead of being white 

 at the base and tip. For these reasons, without laying undue stress on the American 

 habitat of C. taeniatus, it appears more probable that they are distinct species. 



Original Description of Stegomyia fasciata var. Luciensis : 



These specimens resemble S. fasciata, and are probably merely a variety of that 

 species. 



They differ, however, in having a very clearly defined black band at the tip of 

 the last tarsal joint, whereas in S. fasciata the last tarsal joint is always pure white. 



