NO. 1507. MOiSQUITOES FROM COAST OF CALIFORNIA— DYAR. 129 



the lower part of the front on each side; a large multiple tuft about 

 base of antenna?. No trace of the usual thick, club-like hairs; if 

 they are broken, the insertions are not visible. Antenna^ small, not 

 exceeding the mouth brush, conically tapered on ])asal two-thirds, 

 a few spines within, a single hair at about the ])asal third; four 

 terminal digits, all long and pointed, nearly equal. Deep brown, 

 nearly black, lighter at the margins of the eyes. Thorax nearly cir- 

 cular in outline, flattened; a minute double prothoracic subdorsal tuft, 

 a larger lateral 2-haired tuft from a tubercle and a subventral tuft; 

 mesothorax with a minute multiple subdorsal tuft in the disk, a large 

 lateral one from a small, thorn-shaped tubercle and a large subyentral 

 tuft; metathorax with the sul)dorsal tuft many-haired and long but 

 vxry tine, lateral tuft with four feathered hairs and a simple one from 

 a thorn-like tubercle. Abdomen submoniliform, rather slender; a 

 single long lateral hair on the first segment, two on the second, from 

 large tubercles, the subdorsal hairs fine and stellate; on segments 3 to 

 8, the hairs are fine, in substellate bunches, but long, as long or longer 

 than the diameter of the body, both su))dorsal and lateral. Lateral 

 comb of the 8th segment an irregularl}^ quadrangular plate, reaching 

 near the dorsal line, the nine short teeth set on its posterior edge on 

 the lower two-thirds, thorn shaped, with fine lateral feathering; a 

 single hair- and two tufts behind the plate, the upper with a large 

 tubercle. Air tube straight and not tapered, four times as long as 

 wide, light brown, with a narrow black basal ring; a single tuft 

 slightly before the middle, from a raised tubercle, just })eyond the 

 pecten, which has 16 teeth, broad, finely feathered, pallid. Anal seg- 

 ment ringed by the plate, about as long as wide, the chitinous ring- 

 excavated below to admit the short ventral brush; the brush has few 

 tufts and is surrounded b}^ a narrow chitinous band which joins the 

 ring on the ventral line; a fringe of fine spines on the posterior edge 

 of the plate. Dorsal tuft, a group of long hairs on each side. Anal 

 gills small, slender, about as long as the segment, apparentl}^ four in 

 number. 



T(/pe.~-CAt No. 10010, U.8.N.M. 



Proc. N. M. vol. xxxii— 07 9 



