PUPAL STAGES OF WEST AFRICAN CULICID.E. 31 



Length of larva 21 mm., siphon | mm. 

 No pupa. 



[Larvae found in water in the butt-end o£ a large bamboo early in June. — 

 W. M. G.] 



9. iEdimorphus domesticus, Theo. 



Larva. 



This larva is very like that of Cule.v caliglnosus^ Graham^ in the shape of 

 the head, antennae, and the simple character of the hair of the plumes, but 

 can at once be separated on the characters of the siphon ; the comb also has 

 only six scales, though these, when seen from the side, appear alike in type. 



The spines on the siphon are at least fourteen in number, placed in a close 

 and regular row ; at their upper end they are longer and more separated, 

 and quite in the upper third is a small stellate hair like that in Ccaliginosus. 



The siphon is over five times as long as its base (PL IIEj fig. 2). 



The anal segment is also similar except the papillae, which are very 

 unequal ; the longer are nearly four times as long as the segment (55 units 

 against 15) and much longer than the shorter pair (55 units against 35). 



The larvae are 4 mm. long. 



Pupa. 



The pupa is even harder to differentiate from that of Culex caU(/inosus, 

 except that the hair at the base of the thorax seems more bushy, and it 

 appears not to be so broad from a dorsal view ; but it can be distinguished by 

 the absence of the small plume on the seventh segment, which is represented 

 only by a single hair (PI. II, fig. 16). 



Length of thorax If mm. 



Described from seven larvae and two pupae. 



[Larvae found in borrow-pits along the side of the railway early in June. — 

 W. M. G.] 



10. ^dimorphus punctothoracis, Theo. 



Larva. 



HblmI as broad as thorax ; with curious hyaline bladders on the mouth by the 

 maxillae, quite singular in appearance ; antennfie without plume (PL I, fig. 15). 



The bail's of the plumes on the face are triple and quadruple, but they 

 appear serrate, not even subplumose. The side plumes on the thorax are 

 distinctly bushy, and have the usual plumose hairs. 



The abdomen has some lono- sinole hairs standino- out from the sides, 

 which are also serrate ; a higher magnification shows that they bear a very 

 minute pubescence ; they appear characteristic in structure. The plumes 

 at the base of the siphon are large, with plumose hairs. The comb can only 



