THE CANADIAN ENTOMOLOGIST. 



401 



NOTKS ON SOME JAMAICAN CULICID.E. 



L!Y M. GRABHAM, M. A., M. D. , GOVERNMENT MEDICAL SERVICE, JAMAICA, 



WEST INDIES. 



I. The larva and pupa of Uranotcenia Lowii, Theobald (Fig. 23). 

 Collected from a pool covered with Marsilia polycarpa, Hooker, near 

 the bridge over the Rio Cobre Canal, Spanish Town, Jamaica. Found in 

 association with Culex fatigans, Wied., and Cellia albipes, Theo., January 

 ist, 1905. Seen in the breeding-jar, the larvae assumed a horizontal posi- 

 tion, just below the surface film, the extremity of the siphon alone being 

 in contact with the surface film. They moved forward in sharp jerks 

 quite unlike any other Jamaican Culicid. 



Fifj. 23. — a antciin.-i; /; inentiim ; c scale of peiten; n^ scale ot comb ; c Stli and yth 

 abdominal se!J:ments ; r plate ot oriy:in ot ventral tuft ot hairs. 



Head. — Very dark brown, almost black; antennae short, no lateral 

 tuft ; shaft with a few short spines ; terminal spines three, one somewhat 

 longer than the others, about two-thirds the length of shaft; an ovate lamina 

 between the spines ; mentum with seven rounded teeth. Thoracic and 

 anterior abdominal hairs feathered ; posterior abdominal hairs simple ; a 

 number of tufted hairs on the abdominal segments in addition to the 

 lateral hairs, no tufted hairs observed on the thorax. Rays of tufts few, 

 long, slender. 



Tube. — Subcylindrical, five times as long as broad ; pair of tufted 

 hairs at the middle of posterior border. Pecten of tube with double row 

 of twelve to fifteen scales, scales very thin laminae, bordered with many 

 fine hairs (much longer than serrations figured by Felt, New York State 



December, igo,^ 



