176 AN A ceo UNT OF BRITISH FIIES. 



shaped bunch of hairs. The body is composed of eight segments. 

 The pupa3 are often bent {Tanypiis) Uke those of Culex. Two 

 curious respiratory appendages are also present on the back of the 

 pupae of this genus ; it appears that these two external pupal 

 appendages arise from the two internal ones seen in the larv;s. The 

 pupje are always active creatures, even the terrestrial ones moving 

 about violently if disturbed. 



Genus. — CorynoJieiira, Wtz. = Chironottiiis, Mg., Zett. 



The members of this genus are very minute, the largest European 

 species being only yV of a line long, and with alar expansion often 

 not more than | lin. The body is elongated and head nearly round ; 

 the proboscis is very short ; the palpi, which are 4-jointed, are 

 curved downwards, the fourth joint being nearly as long as the other 

 three. The antennce are filiform, and arise from a thickened basal 

 joint, the last joint is usually larger than the intermediate ones ; 

 lo-jointed in c?, 6-jointed in $ ; the hairs on the cJ antenna long, 

 with a bunch of star-like hairs on the distal joint. Scutellum is 

 small. Metathorax elevated. Wings bare ; costa clavate and very 

 short. Abdomen composed of eight segments. Hind tibias have a 

 long spur on the upper side and two spines beneath. Plate iv., fig. i. 



They may be found in abundance near water, and have a curious 

 habit of running about on stones, etc., in circles and curves with 

 astonishing rapidity. I have noticed them to be more abundant 

 near rapid and rocky streams, such as we find in mountainous 

 tracts. 



C. ininnta, Wtz. = C. niinutissima, Mg., C. celen'pes, Wtz. 



This is a common species around lakes, and especially along the 

 banks of rapid streams. It appears about May, and lasts on until 

 the autumn. The head and thorax are black in the ^ . Proboscis, 

 palpi and antennae are whitish, the basal joints of antennre brown. 

 The abdomen is greenish- white, the last segments (1-3) brown. 

 Legs brown, femora white, with dusky tips. In the ? the head is 

 also black, but the thorax is yellow ; the mesonotum has three 

 broad black stripes, almost covering the whole thorax. Scutellum 

 black, and also the metanotum. The pectus is dark brown. Abdo- 

 men black, with pale bands, pale brown on the ventral surface. 

 Legs lighter than in J'; the wings are white, not yellow, as in the 

 ^. Length, -/tt lin. Taken in Wales, Devonshire and Monmouth- 

 shire. 



