252 NOTES. 



243. Xylota. Among the species, descrilied by Mr Walker, there 

 are several, which I have never seen betore, especially among those 

 from the N. A. British possessions. 



244. Xylota Aepalius, is not a Xylota; the specimen in the Brit. 

 Mus. looks more like a Bracliypalpus. 



245. Xylota vecors 0. Sacken, Bull. Buff. Soc. 1. c. S 



Thorax brownish bronze-color, abdomen black; legs, including the 

 coxae, ferruginous; end ot hind femora, the hind tibiae und tarsi black. 

 Lergth: 1314 mm. 



Face and cheeks black, with a greenish reflection and a delicate 

 whitish down on the sides; antennae reddish-brown; front black, with 

 some black, erect hairs. Thorax brownish bronze-color, with indistinct 

 longitudinal greenish stripes; pubescence sparse, short, erect, brownish- 

 yellow, mixed with black; a whitish-sericeous spot inside of the humeri; 

 ] luurae greenish-black, with black. sh hairs; scutellum greenish bronze- 

 color. Abdomen black, with a bluish or purplish reflection and 

 scattered whitish and black hairs. Knob of halterses black, stem reddish. 

 Legs ferruginous, including the coxae; the tip of the ungues brown; the 

 distal third of the hind femora, the hind tibiae and hind tarsi black. Wings 

 tinged with brownish, proximal half more hyaline; stigma dark brown. 



Habitat, White Mountains, N. H. (E P. Austin and H. K. Morrison). 

 Three males and two females. 



In general appearance, this species is very like the European X. 

 femorata ; but it differs especially in the color of the cox;ie, which in 

 the latter are black. Minor differences are that in X. (uiinrtttfi the 

 wings are more uniformly colored, less tinged with brown on the distal 

 half, the stigma paler, etc. 



Xylota curvipes Loew? (Bull. Buff. Soc. 1. c.) 



Among the specimens of Xylota vecors brought by Mr. Morrison 

 from the White Mountains I found one, which is larger than the 

 others (about 15 mm.) , has altogether black coxae, the hind femora 

 stronger and beset on the under side with yellowish hairs, longer 

 and more conspicuous than similar hairs which exist in X. vecors; 

 the hind tibiae, somewhat more strongly curved and ending in a 

 short, stout spur; they are beset on the inner side with very con- 

 spicuous, long, erect black hairs; the halteres are altogether reddish; 

 the antenlan arista dark brown, etc. Now all these characters, in 

 which this specimen differs from X. vecors, belong to the European 

 X. cunipes Loew, Neue Beitr. II, 19. As I have no specimen from 

 the latter for comparison, I cannot settle the question of their identity, 

 but I draw the attention of collectors to this undoubtedly distinct 

 species. We have in this intance one of those curious cases of 

 parallelism, as they so frequently occur between the two faunas. As 

 X. femorata, in Europe is supplemented by the closely resembling X. 

 cwvipes , the American representative of X. femorata, X. vecors, has 

 alongside of it a species either identical with or closely resembling 

 X. cn.vipis. 



246. Xylota ejuncida Say. I am not sure whether I am right in 



