REPORT ON MOSQUITOES. 229 



Petiole of first submarginal cell almost as long as that cell. 

 Length, 4.5 mm. Otherwise as in the female." 

 Nothing is known of tlie habits of this species. 



Description of the Larva. 



The larva, with details of structure, is illustrated on plate 

 fig. 68. It is a stout, robust wriggler and measures 7-7.5 mm., 

 = ,28-30 of an inch in length to the end of the ninth segment. 

 In color it is grayish white, profusely mottled and shaded with 

 brown. Tlie head is about one and one-half times as broad as 

 long, of a yellowish brown color. The posterior part of the 

 vertex is maculated with a dark brown crescent-shaped spot, with 

 a smaller one on each side. Six hair tufts of six or eight hairs 

 each arise from the anterior part of the vertex, four in the cen- 

 tral part and one at the base of each antenna. The single speci- 

 men from which the figure was made retained only two of these 

 four central tufts, and the many small dots on the head were, a 

 preventative against ascertaining the presence or absence of pits. 

 Later specimens showed the four tufts. The antenna (fig. 68, 4) 

 is of moderate length, pale yellowish, becoming brown at the 

 apical third, the surface is covered with rather large spines and 

 many smaller ones intermingled ; the apex with one long spine 

 and three shorter ones besides a little joint. The tuft is situated 

 on the shaft considerably below the middle and consists of eight 

 or ten hairs. The rotary mouth brushes (fig. 68, 2) are deep 

 orange in color, with the hairs of the central part pectinated at 

 their tips. The mentum (fig. 68, 5) is triangular in form, twice 

 as broad as high, with nine blunt teeth on each side of the apex. 

 The maxillary palpus (fig. 68, 6) is normal, with a large apical 

 tuft, a stout basal joint and hairs over the surface arranged in 

 rows and patches. The mandible (fig. 68, 3) is normal and is 

 peculiar by its very blunt teeth. 



The thorax is rounded, with slight lateral angles, giving rise 

 to moderate hair tufts ; two very small tufts are also on the 

 anterior margin. The dorsal surface is a little depressed and 

 symmetrically blotched with brown. These markings differ as 

 to shape, but always suggest two transverse bands, the anterior 

 one broken in the middle. 



The abdominal segments are thick and robust each with lat- 

 eral tufts O'f two hairs each, except the anterior two, which ha^•e 

 four or five hairs. The eighth segment has a large patch of small 

 scales on each side, about forty-five in each patch, arranged in 

 three or four irregular rows. The individual scale (fig. 68, 8) 



