1882.] 147 



sides. The females have the tlioi-ax and abdomen coloured and marked in a similar 

 mannei* to those of the males, the latter part is conical with a pointed apex. 



Generally distributed. Size, from 6 to 7 mm. (about 3 lines). 



I believe that this species has been confounded with C. varlcolor, Meig., a 

 British specimen of which I have not yet seen. The latter (of which I possess a 

 typical example named by Rondani) has the abdomen laterally compressed, and des- 

 titute of the large sub-anal lobular appendages. 



C. TKAPEZINA, Zctt. 



This bears a considerable resemblance to C. impudica, but is darker in colour 

 than that species, less hairy, has the abdomen of the male more depressed (less 

 cylindrical), with smaller ventral lobes without a red spot at their base, and is marked 

 along the dorsum with a series of triangular or sub-quadrate black spots. The thorax 

 has tliree black stripes, which arc nearer together than those in C. impudica, and 

 there are often two lateral ones in addition. 



The hind tibiaj of the males are armed with three or four bristles in the middle 

 of their inner sui'faces. 



The female is lighter in colour than the male, and often has both thorax and 

 abdomen almost immaculate. 



Not uncommon. 



C. CINEREA, Eall. 



This species is characterized by its grey colour and almost immaculate thorax. 

 The face is rather prominent, that of the female being more so than that of the male. 

 The abdomen in the latter sex is sub-cylindrical, somewhat flattened, clothed with 

 numerous black hairs, and showing dark reflections when viewed in some directions; 

 it has also a narrow sub-interrupted dorsal stripe, and tapers a little towards the 

 apex, which is round, projecting, and of a gi'ey colour, with two hairy lobular ap- 

 pendages on its under-surface. The legs are long and spinose ; the hind tibiaj of 

 the males being armed along their inner sides, for nearly their whole length, with 

 a series of short stiff hairs, of sub-equal lengths. 



The female has the thorax often marked on its front margin with two narrow 

 brown stripes, placed near together. The abdomen is conical, pointed, mostly 

 unstriped, and closely resembling in shape that of the female of Eydrophora conica. 



The length of this species is usually from 7 to 8 mm. (3 to 4 lin.), the females 

 being mostly the larger. It is not uncommon; the females are much more frequently 

 seen than the males, and are often noticed on the flowers of Chrysanthemum leticau- 

 themum (the ox eye). 



C. CrXERELLA, Fall. 



This little species has the thorax and abdomen coated with grey dust-like scales 

 {cinereo-farinosus) ; the farmer is indistinctly striped, except by four dorsal rows of 

 small black bristles ; and the latter, which is cylindrico-conical in the males, is marked 

 by a central dorsal line of small triangular spots. The hind femora, as pointed out 

 by Rondani, are destitute of bristles on the basal half of their under-surfaces, and 

 the hind tibise are bare on their inner sides.* 



* Rondani also observed that the epistome is very prominent. 



