Decigoi.] DyaR : LiFE-HlSTORY OF URANOTi«NIA SaPPHIRINA. 119 



slender, with tufts of fine hair. Abdomen colorless or greenish, cen- 

 tered by the dark alimentary canal and silvery tracheal tubes; hair 

 tufts on the sides gradually smaller posteriorly ; lateral comb of the 

 eighth abdominal segment a patch of fine spines about three rows 

 wide. 



In a spring pool, a small lake and a transient fresh-water marsh, 

 Bellport, New York. 



Culex confinis Lynch. (Plate X, Fig. 3.) 



Head round, flat, narrowed before ; eyes large, transverse ; pale 

 brownish, dark brown on the vertex ; antennee long, slender, uniform, 

 the outer two -thirds black, tuft at the middle, small, often folded and 

 invisible ; three end hairs and a spine ; mouth brushes normal. 

 Thorax moderate, rounded, bulbous. Abdomen cylindrical, thick, 

 the segments only slightly bulging, gradually a little smaller pos- 

 teriorly. Hairs rather abundant in subequal tufts, short, scarcely any 

 more than two-thirds the width of the thorax in length, less visible 

 posteriorly. Air tube brown, subfusiform, about three times as long 

 as wide with a double pecten below, normal ; side combs of the eighth 

 abdominal segment with a i&'f^ teeth only, each with a dentate plate- 

 like base ; last segment longer than wide, brown ringed ; double dorsal 

 tuft rather short, the ventral brush also short but extending over nearly 

 the whole ventral line of the segment. Anal processes slender, incon- 

 spicuous. 



Found in a muddy puddle of rain water by the banks of the canal 

 near Cabin John, Maryland. 



THE LIFE-HISTORY OF URANOT^ENIA 

 SAPPHIRINA O. S. 



By Harrison G. Dyar, Ph.D. 



(Plate XI, Figs. 1-4.) 



This mosquito is not common nor troublesome. The species is the 

 only one of its genus at present known from North America. The 

 larvse occurred in a cold stream which was formed into a large pool 

 by a dam and in a warm marshy pool. They occurred sparingly dis- 

 tributed and were not abundant. Both places were permanent bodies 



