326 Mr. T. D. A. Coekerell on 



of which agree with B. Kincaidii. It is not identical either 

 with any of the rather numerous species which Radoszkowski 

 recorded in 1877 from Siberia. Using Schmiedeknecht's 

 table of European Bombi, the female runs to B. hyperboreus, 

 but differs from that in the paler pubescence, and especially 

 in having the first three abdominal segments always with 

 light hair instead of the first two only. The male differs from 

 that of hyperboreus in the proportions of the flagellar joints, 

 as described, and in the absence of the long black hairs on 

 the posterior tarsi. B. hyperboreus inhabits the arctic regions 

 of Europe and Siberia, also Greenland; it is, I think, the 

 nearest ally of Kincaidii at present known. 



V. — Some neiv Gall-gnats (Cecidomyiidse). 



Diplosis airiplicicola, sp. n. 



Gall. — A small circular pustule-like swelling in the leaf of 

 Atriplex canescens, about 2i millim. diam. 

 Pupa shell light brown, uniform in colour. 

 Imago about 1| millim. long, black, the abdomen densely 

 covered with coarse white hairs. Legs pallid, faintly yellow- 

 ish, clothed (especially the femora) with white hair. Wings 

 white. 



£ . — Antennae 2 + 12-jointed ; first joint elongate, obconical, 

 second a depressed sphere, remaining joints stout and cylin- 

 drical (sausage-shaped), very shortly petiolate ; irregularly 

 and rather densely clothed with simple depressed hairs, these 

 hairs much shorter than the joints and not distributed in 

 separable whorls ; third joint longest, the others about equal. 

 Eyes united, covering most of head, vertex projecting, 

 apparently conical. Scutellum with some long slender hairs. 

 Genitalia reddish brown. Wings with scattered simple 

 hairs ; first (subcostal) longitudinal vein arising from the 

 cross-vein some distance from the base of the wing, the cross- 

 vein thence slanting a little backwards in both its upper and 

 lower portions, but not very oblique ; no other cross-vein is 

 apparent ; costal margin uniformly and densely bristly until 

 the end of the second longitudinal vein just before the tip of 

 the wing, after which the wing-margin is without hairs ; 

 third longitudinal vein weak. Legs long; first tarsal joint 

 extremely short ; claw-joint of hind tarsus scarcely more than 

 half the length of the one before it. 



JIab. Mesilla Park, New Mexico, on the campus of the 

 Agricultural College, end of July, 1898. 



This is not a true Diplosis; it seems to differ from all 



