AND PUPAL STAGES OF A NEW MOSQUITO. 



627 



together, the posterior lateral teeth broader (almost triangular 

 near the base) and more widely separate, the last tooth small 

 and remote. Thorax wider than long, hairs moderate, feathered, 

 the stouter, multiple ones each consisting of from 8-10 hairs. 

 Abdomen somewha,t stoiat. Eighth abdominal segment as shown 

 in text fig, 2, the lateral comb composed of about fifty slightly 

 chitinised scales arranged to form a tiiangular axea. ; each comb- 

 scale is .somewhat elongate and is armed apically with a. fringe of 

 spinules. Air-tube about twice as long as broad ; pecten com- 

 posed of some 16 evenly spaced teeth — each pointed and with 

 one or two lateral projections, — the most distal tooth situated 

 about half-way along the tvibe. Hair-tuft of the air-tube arising 

 immediately beyond the last spine of the pecben and composed of 

 four or five feathered hairs. Anal segment as long as its greatest 

 width, the chitinous plate rather small, not completely encii'cling 

 the segment ; upper pair of papillae large, about twice the length 

 of the anal segment, lower pair smaller, scarcely exceeding the 

 length of the segment. Dorsal hairs four in number, the upper 

 pair compound composed of 3-4 liairs each, the lower pair longer 

 and apparently single ; ventral brush well developed, composed 

 of 14 or 15 compound hairs. 



Text-fisfure 3. 



a. Air-trumpet (X 80), and b. Patldle (X 45) of pupa of Ochlerotatus 

 laurel, sp. n. 



Pujxi : Anterior region (cephalo-thoracic mass) elongate, sub- 

 pyriform, compressed ventrally and posteriorly; respiratory 

 trumpets (text-fig. 3 a) conical," their apices obliquely truncate. 

 Abdomen relatively stout with weak hairs; dorsal, admedian, 

 pair of multiple hairs of the first segment each composed of about 

 ten short, branched, hairs; second segment with a pair of smaller 

 and less complex multiple, admedian, lateral hairs, and also a 

 pair of longer, single or double, dorso-hairs. Remaining segments 

 with similar dorso-lateral hairs, the seventh and eighth segments, 



