272 FOREIGN BEES. 



entomologists, to describe it more in detail. In its 

 general form it is broad and depressed, the colour 

 sbining black, the abdomen being duller than the 

 thorax, the latter clothed in front with short black 

 hairs, and the sides and extremity of the abdomen 

 are fringed with longer hairs of the same colour. The 

 eyes are of a dull white, and approaching each other 

 at the hinder part of the head, but separated by a 

 considerably wider space than those of X. latipes. 

 Antennae black, the basal joint not dilated as in the 

 species just named ; legs black, clothed with long 

 hair, the anterior tarsi of a dirty white colour, the 

 basal joint very thin, flat, and broad, (but not so di- 

 lated as in X. latipes,) and furnished, especially on 

 the outer edge, with a thick brush of brown hairs, 

 the terminal joints flat and brown, with a similar 

 brush on the outer margin, the brush on the inner 

 margin of these joints being much shorter and thicker 

 than in X. latipes. The wings are nearly opaque at 

 the base, but become gradually more transparent at 

 the tips ; the former portion with an intense violet 

 gloss, which is gradually shaded off to a coppery 

 green.* (In X. latipes the wings have a green gloss 

 at the base, which is shaded off into a purple 

 bronze.) The clypeus is black, with the exception 

 of a very minute pale spot on each side, close to 

 the base of the mandibles. 



This species is from India, and the individual figured 



* Mr. Westwood is of opinion that the colour of the gloss 

 of the wing affords a very good, although hitherto neglected, 

 specific character in this difficult genus. 



