HEEMETIA. 31 



antennae and the edge of the mouth, white ; facial orbits likewise whitish ; a 

 yellowish-white spot on each side of the lower part of the front, near the orbit ; pro- 

 boscis reddish ; the sides of the face and the underside of the head are beset with 

 silvery-white hairs; front and vertex with darker hairs; eyes glabrous. Antennae 

 black, except the tip, which is white ; the compound part of the third joint is 

 linear, not swollen, and distinctly shorter than the vane-like rather narrow ter- 

 minal portion. Thorax metallic greenish-black; the dorsum with a whitish scat- 

 tered pubescence, which forms two beginnings of stripes anteriorly ; traces of yellow- 

 ish on the post-alar callosity, along the posterior edge of the scutellum, and on the pleurae, 

 along the mesopleural suture. Halteres yellow. Abdomen gently convex, gradually 

 expanding from the base to the tip ; red, the two basal segments black and with a violet 

 metallic reflection ; posterior margin of the second segment red ; on the dark portion 

 of the second segment are a pair of oblong reddish-yellow spots, which slightly 

 encroach upon the first segment ; each of these spots has, on its outer side, a beak- 

 like expansion lying on the suture between the two segments ; the red portions of 

 the abdomen are clothed with a microscopic, appressed, dense, rufous tomentum, visible 

 in an oblique light only. Femora black ; tibiae and tarsi whitish-yellow. Wings rather 

 uniformly tinged with dark brown from the very root; a slight bluish-opalescent 

 reflection upon them. 



A single female. 



N.B. — 1. The eyes (revived on wet sand) appear quite different from those of the 

 typical H. illucens : ground-colour green, with three large purple spots ; the upper one 

 triangular, with one side concave ; below it an oval, somewhat ill-defined spot, separated 

 from the former by a broad green cross-band ; between these two spots and the fronto- 

 facial orbit, lying alongside of the orbit, is placed the third elongated spot. 



2. The principal differences of the present species from H. rufiventris, Fabr., 

 are that the first two abdominal segments are black ; that the incisures are not 

 ik weisslich schimmernd " (with a whitish reflection) ; and that the tibiae are altogether 

 whitish. The differences from H. lativentris, Bellardi, are that the pubescence of the 

 face is silvery on the sides, that of the front blackish, while Bellardi describes both as 

 yellow (" flavo-villosa ") ; that the thorax shows traces of silvery stripes in front, and 

 a whitish pubescence near the scutellum, while Bellardi speaks of a " tomentum aureum 

 in tres vittas subobsoletas dispositum." The pale spot on the second abdominal 

 segment according to Bellardi's figure and description is merely bisected by a black 

 line, interrupted posteriorly, while in our specimen the whole segment is black, with 

 two perfectly isolated reddish-yellow spots. Bellardi says : " alae ad imam basin sub- 

 hyalinae " ; my specimen has the wings uniformly brown up to the root. 



[Since writing the above I have seen Prof. Bellardi's type in Turin, and have found 

 his description to be correct : it is an altogether different species. H. rufiventris, 

 (Fabr.?), which I saw in Berlin, is likewise different ; its wings are much paler, &c] 



