new African Celoniine Beetles. 531 



cT, clava anfcennali longiori ; tibia antica aiigusta, acuminata, 

 postica apice uni.spinosa ; pvfjidio an<i;iisto, convexo : 



$ , pronoto latiori ; tibia antica acuto tridentata, postica apice tri- 

 digitata, processubus iutus longo ciliatis ; pj-gidio longitudiiialiter 

 leviter siilcato. 



Long. 10-12 mm. ; lat. 5 ram. 



Nyasala.vd: Mlange [S. A. Neave, Nov.-Feb.). 



This species, although closely related to C. ho/lisi, Wat., 

 lias a peculiar aspect, due to the transparent hyaline elytra 

 producing a mimetic resemblance to tlie wings ot" a small 

 bee. The black margins and lines of black dots, upon which 

 fine setse are placed, simulate the venation, and, in conjunc- 

 tion with the white spots and bars upon the pronotum and 

 abdomen, seemed designed to imitate the bees of ihe genus 

 Melecta or some allied genus. V^arious species of these bees 

 inhabit the same region and prot)ably frequent the same 

 flowers. 



The head is like that of C. nyassce and hoUisi, deeply 

 bilobed and clothed with rather scattered sette. The pro- 

 thorax is scarcely wider than the head across the eyes and a 

 little shorter than it is long, with the front angles obsolete 

 and the hind angles very obtuse, and the sides bluntlv 

 angulated before the middle. The uj)per surface bears 

 irregular!}' scattered setse, which broaden into scales arranged 

 in five ehisters on each side, one placed at each angle and 

 the other three forming a triangle upon the disc. The 

 scutelhun is long and clothed with similar setae. The trans- 

 pai'ent elytra have a yellow tinge, but the inner and outer 

 margins, as well as the lateral costa and longitudinal lines 

 of irregular dots, arc black. The hyaline effect is due to the 

 wings beneath being visible through the elytra, and the 

 appearance of a bright yellow spot is produced on each side 

 of the apex of the scutellum by a brush of long white hairs 

 upon the metanotum showing through at that point. The 

 pygidium is rugulose and bears two longitudinal bands of 

 white scales narrowly separated. 



The sexual differences of the genus Calometopus have 

 never been described, most of the species having been 

 hitherto represented by female specimens only, although the 

 type of C. hullisi, Wat. (which I have not seen), is evidently 

 a male. The remarkable trilobed hind tibia, regarded as a 

 generic character by Blauehard in the original dciicription, 

 and since by Peringuey and Bourgoin, is a feature peculiar 

 to the females. 



