40 The Mosquitoes or Culicidae of Jamaica. 



NOTES ON LARVA AND PUPA OF URANOTAENIA LOWII. Theobald. 



Two small delicate larvae, collected from a pool covered with 

 Marsilia polycarpa, Hooker, in a ditch near the bridge over the 

 Rio Cobre Canal, Old Harbour Road, Spanish Town, Jamaica. 

 Found in association with Culex fatigans, Wiedemann, and 

 Cellia albipes, Theobald, January 1st, 1905. 



Seen in the breeding-jar, the larvae assumed a horizontal 

 position 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. 



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

 lateral tuft ; shaft with a few short spines ; terminal spines 

 three, are 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. Sub-cylindrical, five times as long as broad : pair of 

 tufted hairs in the middle of the 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 Museum, Bull. 79, 

 Ent. 22, p. 344, 1904, in U. sapphirina, Osten Sacken). Row 

 of pecten scales reach from the base of tube up to level of tufted 

 hairs. Upper scales overlap one another. 



Comb of eighth segment, an irregular row of eight to nine 

 simple curved spines springing from a chitinous plate. 



Chitinous collar completely encircling ninth segment. Dorsal 

 and ventral tufts of hairs spring from oval chitinous plates 

 attached to collar by narrow isthmuses (similar plates are figured 

 by Felt in U. sapphirina, Osten Sacken). 



Anal papillae long, slender, divergent. 



Pupa. Thorax and abdomen with scattered tufted hairs. 

 Siphons sub-cylindrical, about eight times as long as broad ; 

 bases deeply chitinised. Fins acuminate, midrib not projecting 

 beyond border. Borders deeply serrated ; two halves of fins 

 very unequal. 



