NEW CULICINE LARVAE FROM THE GOLD COAST. 



17 



and a distinct ventral beard, the hairs composing the tufts of which are few in number ; 

 a long single hair is present laterally and the posterior edge shows a row of slender 

 spicules. The anal papillae are equal in length to the anal segment. 



This larva may be readily distinguished from the two other known larvae of the 

 genus by its large size, by the shape of the head and the slender frontal hairs, and by 

 the number of scales (the other two have spines not scales on the eighth segment) in 

 the comb, which number about twenty. 



Pupa. — None was collected. 



Breeding iDhce.—The larvae were found in excavations made by the searchers after 

 crabs along the margins of the stream at Sunyani. 



Uranotaenia alboabdominalis, Theo. (fig. 14). 



The larva in life measures 3|-4 mm. and is of a light grey colour, whereas the lar\-a 

 of U. halfouri is usually dark. 



The head is narrow and elongated, and is not so dark as the head of the larva of 

 TJ. halfouri ; the eyes in this species also seem to be placed further forward upon the 

 head than is customary. The antennae are light in colour, short, stunted and without 

 hair-tuft or hair. The mid-frontal hairs are replaced by single stout, spine-like and 

 somewhat flattened bristles ; in front of these bristles are two stellate hairs upon the 

 face. In addition to the usual long plumes on the thorax and abdominal segments, 



Fig. 14. Uranotaenia alboabdominalis, Theo. 



there are numerous stellate hairs, which are m.ost marked upon the abdomen. The 

 comb is formed of 8-9 spines, set in a curved line having its convexity posteriorlv 

 directed ; these spines are very uniform in size, and are set on the posterior edge of 

 the conspicuous lateral chitinous plate. The subsiphonal plume is composed of sub- 

 plumose hairs, the siphonal and anal plumes apparently of simple hairs. In addition 

 to the plumes on the eighth segment, there are one or two stout single hairs and a 

 single stellate hair-tuft. The siphon is in length about 3J times the diameter of its 

 (C250) B 



