404 THE CANADIAN ENTOMOLOGIST. 



'rhe adulc larva al test lies liorizontally just under the surface fihn, 

 and moves forwatd in spasmodic jerks. Tliorax and abdomen sparingly 

 covered with tufted liairs (6). Mentum stout, teeth eleven in number, 

 apicaltootli broad snd flut (i). Antenn;?^ with lateral hair tufts; three 

 terminal hairs, innermost longest, ending in long thread; a lanceolate and a 

 bilobed blade between hairs (2). Siphon nearly cylindrical, about four 

 times as long as broad, a pair of tufted hairs at the middle of the posterior 

 border. Pecten of 10-12 very thin scales bordered with fine hairs, each 

 scale somewhat thickened in the centre. Row of scales reaches halfway 

 up tube (3.3'). Comb of 7 short, stout, curved spines, in a single curved 

 row (4). Anal papillae small. Ventral and dorsal tufts of hairs spring 

 from spatulate processes attached to the main chitinous band by long, 

 narrow isthmuses (5.5'). Chitinous collar complete. 



3. Adult larva oi Melanoconioii atratus, n. sp., Theo. (Fig. 25). Small 

 transparent hairy larvse, with very delicate elongated siphons, abounding 

 in pools in mangrove swamps. Collected all the year round. Mentum of 

 13 teeth ; apical tooth elongated (i). Antennte proportionately large; 

 lateral hair tuft of many long feathered hairs ; terminal hairs long and 

 stout (2). 



Sipho?i many times longer than broad, slightly constricted in the 

 middle, with several pairs of tufted hairs along the posterior border. Row 

 of pecten occurring along lower third. Scales about 20, long and delicate, 

 with many fine hairs along the concave border (3.3'). Comb of numerous 

 flattened elongated scales bordered with fine setre (4). Anal papillae small. 

 Ventral tuft of hairs springing from separate plate (5), Chitinous collar 

 complete. Siphons of pupa deeply chiiinized at apices (6). 



4. Adult larva of Culex confirmatus, Arr. (Fig. 26). Dark brown 

 (nearly black), very active, voracious larvse found in fresh water pools at 

 the Rio Cobre Canal Dam, near Spanish Town, Jamaica, January ryth, 

 1905. Abdomen and thorax thickly covered with small spines (i). 

 Mentum a wide angle of about 40 teeth (2). Antennae short and stout ; 

 lateral tuft at the middle, of three hairs. Terminal hairs three in number, 

 several shorter spines and a wedge-shaped lamella (3). Siphon about i^ 

 times as long as broad ; a tufted hair at the posterior border near the 

 apex. Row of pecten 15-20 strong spines, each with several smaller teeth 

 at the base (4.4'). Comb of 20-25 short oval scales in a triangular patch; 

 each scale bordered with numerous fine setie (5). Anal papilla; lanceo- 

 late, nearly as long as the ventral tuft (6). Hairs of the ventral tuft 

 spring from a separate plate. Chitinous collar of ninth segment complete. 



