THE CANADIAN ENTOMOLOGIST. 333 



Scale cone-shaped, with radiating ridges ; antennae 



5-jointed Edtvallia, Hempel. 



Scale convex, but not cone-shaped ; not divided at all, but rough or 



beset with protuberances ; antenna? 7 or 8-jointed 7. 



7. Natives ot the arid region of N. America Ceroplastodes, Ckll. 1893. 



Native of India Ceroplastodes cajani (Maskell).* 



8. Quite flat, circular, with the glassy covering in two parts, divided longi- 



tudinally in the middle line; glassy covering with rows of air-cells 

 as in Inglisia Platinglisia, Ckll., 1 899. 



Moderately convex, with the glassy covering in two parts, divided 

 longitudinally, each part with a low eminence, from which lines 

 radiate Schizochlamidia, Ckll., ined. 



Very convex, with conical protuberances ; glassy covering without 



rows of air-cells Pseudokermes, Ckll., 1 895. 



(To be continued.) 



NEW GENERA AND SPECIES OF NYCTERIBID.E AND 



HIPPOBOSCID^. 



BY D. W. COQUILLETT, WASHINGTON, D. C. 



Pterellipsis, n. gen. — Near Megistopoda, but with aborted wings. 

 Head once and a half as high as long, in profile subhemispherical, 

 covered with bristles which are longest on upper part of the front ; eyes 

 oval, situated on sides of head slightly behind the middle, no ocelli ; 

 antennas one-jointed, flattened, elliptical, three-fourths as long as the head, 

 once and a half as long as wide, covered with bristles and bearing a long 

 one at apex. Thorax greatly compressed, strongly gibbous, the sternum 

 flattened, its front end lamelliform and prolonged in front of the anterior 

 coxcC, a longitudinal impressed median line and on each side, slightly 

 behind its middle, is an impressed line extending from it obliquely 

 outward and backward to the lateral margin just behind the middle 

 coxiie; wings narrow, projecting obliquely upward and forward, divaricate, 

 once and one-third as long as height of thorax, four times as long as 

 wide, with three veins besides the costal, each of the median veins 

 forked near the middle, the front fork of the anterior vein reaches the 

 costa near the last fourth of its length, the posterior fork ends in the 

 extreme tip of the wing ; the forks of the following vein are united 



* Eriochiton cajani, Maskell, Ind., Mus. Notes, Vol. II., p. 61. I can only leave 

 this in Ceroplastodes for the present, but I think the resemblance to that genus is prob- 

 ably due to convergence and not to real affinity. 



