THE CANADIAN ENTOMOLOGIST. 407 



water in the holes is brackish. LarvjB abundant after seasonal rains in 

 May and October. Mentum with steep sides ; summit a wide angle of 15 

 rounded teeth (i). Antenna : shaft stout, quite smooth, devoid of spines; 

 lateral hair tuft arising from the middle, composed of a hvf short, fine, 

 simple hairs ; terminal hairs short, three somewhat larger than the others, 

 a flattened lamella between them (2). Siphon 2^^ times as long as broad; 

 four pairs of tufted hairs along posterior border, lowest pair arising quite 

 near base (3). Row of pecten of seven toothed spines (4). Comb of 

 70-80 small scales arranged in a triangle, scale bordered with many fine 

 hairs, shaft thickened along the centre (5). Narrow chitinous collar com- 

 pletely encircling ninth segment (6). Basal tuft of hairs arising from a 

 separate plate. Anal papillce cylindrical, rounded at the free ends, 

 thickened by spiral interlacing strands of chitin (6';. Eggs laid in rafts. 



6. Adult larva of Culex microsquajnosus, n. sp., Theobald (Fig. 28). 

 Collected in algas-covered pools at the Rio Cobre Canal Dam, near Spanish 

 Town, Jamaica, January lylh, 1905. Mentum a wide angle of many 

 teeth, one of the outer teeth on each side rising considerably above the 

 others (i). Antennfe stout and relatively large, lateral tuft of many 

 feathered hairs. Apical hairs simple, 2 long, 2 short, a wedge-shaped 

 lamella at apex (2). 



Siphon many times longer than broad, in adult larvae as long as the 

 thorax and abdomen, slightly curved forward in its upper half; row of 

 pecten in lower third of 15-18 scales, each scale a flattened lamella with 

 5-6 terminal serratures and 2-3 basal ones. Four bifid hairs along 

 posterior margin of tube increasing in size from above downwards {t,.2)')- 

 Comb of 30-40 delicate scales in a rough triangle, each scale bordered 

 with fine hairs along the free margin (4). Anal papillae ovate, nearly as 

 long as ventral hair tuft (5). Chitinous collar of ninth segment complete, 

 broad. Eggs laid in rafts. 



Mosquitoes bred from these larvse were forwarded to Mr. Theobald, 

 who has kindly sent me the following description : 



" Culex microsquamosus, n. sp. — Thorax clear bright brown, 

 unadorned, pleura pale gray. Proboscis indistinctly pale-banded in the 

 middle. Abdomen deep blackish, with basal pale bands. Legs deep 

 brown, unhanded ; base and venter of femora gray ; apex of hind tibiae 

 l)ale. Palpi of male acuminate, last two segments hairy, jet black, 

 remainder mostly ochraceous brown. Male genitalia with three flattened 

 spines and one foliate plate on the inner lateral process. 



