PUPAL STAGPJS OF WEST AFRICAN CULICID.E. 37 



and several shorter ones. Brush with exceedingly long hairs ; maxilla very 

 large. Side plumes on face very large, comprising 8-10 plumes of plumose 

 hairs. Eyes with the pigment spot behind ; a small plume of simple hairs 

 underneath them. 



Thorax scarcely differentiated, but covered with long strong plumes of 

 plumose hairs. 



The abdomen, besides the usual plumes which are of plumose hairs, has a 

 few moderately long simple hairs on each segment. Comb consisting of 

 seven scales, which are sharp spines, well separated, and in a single row. 

 Sub-siphonal plume large, consisting of eight plumose hairs ; the siphonal 

 plume smaller with only four simple hairs. 



Siphon nearly as long as the abdomen, thin and tapering ; a shade more 

 than eight times as long as the base. Spines marked, simple, running to 

 nearly f of the length ; closer together at the base than at the upper end ; 

 four simple hairs show on the ventral side, and some at the tip ; valves 

 moderate, the trachese that are enclosed are noticeably thin (PI. IV, fig. 15). 

 The anal segment is short,, a third longer on its dorsal side than on its 

 ventral ; the papillse are more than three times as long as the longest part 

 of the segment, and are of nearly equal size ; they taper to sharp points ; 

 a trachea can be traced down each papilla ; the dorsal edge of the segment 

 oarries long hairs, half as long again as the papillse ; there is a short plume, 

 but no beard on the ventral edge. 



Length of larva 3| mm., siphon 2 mm. 

 No pupa. 



[Larvae found in borrovv-pits along the side of the railway late in June. 

 The behaviour of these larvae resembles that of the larvae of JEdimorjjJius 

 'punctotli07%icis. — W. M. G.] 



IG. Culex guiarti, Blanch. ( = viridis, Theo., nee Rob.-Desv.). 



Larva. 



Big headed forms with extraordinarily long siphons (PL VII, fig. 1). 

 Head light, subhyaline, as broad as, or broader than the thorax. Antennae 

 long, and carrying a large plume of plumose hairs ; distal joint dark and 

 with three long ])lack spines, and a fourth short one, besides a subhyaline 

 process which is not always present ; the spines are at different planes and 

 oonsequently only three show at one focus, using a magnification of 

 60 diameters. The maxillae carry very long hairs and the mouth-parts 

 are very hairy — this shows best in a lateral view ; the hairs on the face 

 are much developed. The eyes are large and have a small pigment spot 

 behind them. 



The thorax is of fair size; the dorsal anterior hairs are many, and reach 



