292 BOMBYL1ID.E. 



facets small, of uniform size ; the frons and face combined appear 

 as an isosceles triangle, the inner portion being very deeply 

 retracted, leaving a broad white margin on the three sides ; above 

 this the antennae are placed on a slight yellowish-white (almost 

 quite white) prominence, and from the cavity below protrudes the 

 long black proboscis, 3| mm. long, which is brown at the base 

 belusv. Antennae with first joint white at the extreme base, 

 becoming immediately pale yellow, graduating into orange, 

 Avhich forms the centre part, and deepening into black for about 

 the apical third ; the whole joint with scattered short black 

 spines ; second joint half the length of the first, wholly black, 

 closely covered with black spines ; third joint all black, quite 

 bare, slightly shorter than the first. Back of head silvery white, 

 with some short white hairs. Thorax black, finely punctate, with 

 very sparsely scattered, very short, golden-yellow hairs : two 

 rather narrow central grey stripes run close together from the 

 anterior margin to the middle, where they coalesce and continue 

 united to the posterior margin ; these stripes are only visible 

 when viewed from behind. On the shoulders are placed three calli, 

 the upper and largest one being almost bisected, the intermediate 

 one very small and triangular, the lower one as large as the upper 

 and also triangular ; the upper one is contiguous to a more or 

 less oblong spot on the dorsum, directed inwards and backwards ; 

 the remaining calli are placed vertically beneath the upper one, 

 all being contiguous 1o one another, the lower ones touching the 

 concolorous fore coxae ; all these spots are pale yellowish white. 

 A scale-like callus is placed in front of the wing, and is yellowish 

 white on the anterior half, and black on the remainder, which 

 reaches back to the posterior callus which is yellowish Avhite. 

 Below this callus is a small round yellowish-white scale ; by the 

 side of the scutellum and below the wing is an orange-yellow 

 scale-like process, connected by a thin membrane to the just- 

 mentioned scale. The sides of the thorax are black, with a 

 few blackish-brown hairs and some whitish-grey hairs in front of 

 the insertion of the wings and a larger quantity of longer similar 

 hairs on the large sternopleura. Scutellum black, finely punctate, 

 posterior half with some grey hairs. Abdomen at base wider than 

 the scutellum, rapidly contracting posteriorly, forming a triangle ; 

 black, finely punctate on dorsum, with some very short grey 

 hairs ; at the sides are much longer hairs, both black and grey ; 

 second to fifth segments (inclusive) very narrow, dorsum black, 

 sides and venter orange-yellow, fifth slightly widening at tip; 

 sixth, seventh, and eighth segments widened into an elongated 

 club, but the segments themselves are all shorter than the others, 

 the eighth being shortest of all ; sixth segment orange, seventh 

 and eighth reddish brown. The whole abdomen at sides with 

 very short, scattered, golden-yellow hairs; on dorsum with 

 microscopic black hairs, and the last three segments with very 

 short black hairs, which are also present on the posterior borders 

 of these latter. The anal appendage ( d" ) withdrawn within the 



