274 MOSQUITOES OF NORTH AMEEICA 



appendage somewhat within, and a seta. Clasp-filament stout, a little swollen 

 mesially, bearing a small terminal claw and two minute sets, these latter in- 

 serted inwardly below the tip. Harpes divided, inner limb stout and with a 

 crown of spines, outer blade-like and somewhat curved. Harpagones divided 

 into several lamellae, which form an irregular series of angular prominences. 



Larva, Stage IV (plate 96, fig. 314) . Head rounded, wider than long, promi- 

 nent in region of eyes ; antennae long and slender, a large hair-tuft at outer third, 

 the part beyond more slender than the basal part, the shaft minutely spined; 

 two of the terminal hairs slightly more basal than the terminal one ; both pairs 

 of head-tufts in threes, the ante-antennal tufts multiple. Thorax with skin 

 finely spiculate, abdomen smooth ; lateral hairs in fours and threes on first two 

 segments, double on second to fifth, single on sixth ; lateral comb of eighth seg- 

 ment of many spines in a large triangular patch. Air-tube over five times as 

 long as wide, gradually tapering throughout ; pecten reaching the basal third, of 

 about 14 teeth, the distal ones gradually longer and curving toward side of tube ; 

 a tuft just beyond pecten, a second more dorsal in position, of three hairs, the 

 third subapical, of four hairs; terminal hooks minute. Anal segment longer 

 than wide, ringed by the plate ; dorsal tuft of three hairs of different lengths on 

 each side; lateral hair small, single; ventral brush large, confined by the 

 chitinous ring. Anal gills rather short, tapering, equal. 



The larvag live in ground-pools. Mr. Jennings got them in an old tub in a 

 pasture and from a slowl3^-running stream. The species appears to be sporadic 

 in appearance, as Mr. Busck mentions that it was not found when he first 

 visited the locality with Mr. Jennings, but was only obtained on Mr. Jennings's 

 second visit 6 weeks later. Mr. Knab obtained the larva in a pool in a cattle 

 pasture which was partly shaded by a large tree. 



Panama and Costa Rica. 



Taboga Island, Panama Bay, Panama, bred from larvae (A. H. Jennings) ; 

 Las Loras, near Puntarenas, Costa Rica, bred from larva?, September 18, 1905 

 (F. Knab) ; La Boca, Canal Zone, Panama (A. H. Jennings). 



CULEX REVELATOR Dyar & Knab. 



Culex revelator Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 202, 1907. 



Culex inquisitor Busck (not Dyar & Knab), Smiths. Misc. Colls., quart, iss., lii, 66, 



1908. 

 Culex revelator Busck, Smiths. Misc. Colls., quart, iss., lii, 69, 1908. 

 Culex factor Busck (not Dyar & Knab), Smiths. Misc. Colls., quart, iss., lii, 70, 1908. 

 Culex revelator Theobald, Mon. Culic, v, 614, 1910. 



Original Desckiption of Culex revelator: 



$. Proboscis rather long and slender, not swollen at apex, brown scaled, not 

 ringed; palpi short, black scaled; occiput brown scaled, ocular margin white; meta- 

 notum golden-brown scaled, pleura pale greenish gray; abdomen subdepressed, trun- 

 cate at the tip, clothed above with black scales with bronzy and blue luster, the 

 second and third segments with a median, basal, small patch of white scales, the suc- 

 ceeding segments banded, the bands broadest at middle, much narrower at the sides, 

 on the banded segments the bands are broadened laterally towards the ventral area; 

 beneath entirely white scaled; legs dark with bronzy luster, the tarsi narrowly 

 ringed with yellow-white at both ends of the joints; the tip of the last joint of the 

 hind tarsi white; claws simple; wing-scales brown, long, and narrow. Length 3 mm. 



c?. Palpi considerably longer than the proboscis, brown scaled with bronzy and 

 bluish luster, the apical half with numerous long blackish hairs; antennae amply 

 plumose; abdomen long and slender, the segments with moderately broad basal 

 silvery-white bands, those on the sixth and seventh segments dilated at the sides. 

 Lateral cilia long, moderately abundant, pale brown. Length, 3.5 mm. 



Four specimens, Taboga Island, Panama (A. H. Jennings, collector), bred from 

 larvae found in a boat containing water. 



Type. 1^0. 10917, U. S. National Museum. 



The larva is allied to Culex proclamator D. & K. and C. inquisitor D. & K., but 

 differs from both in having the basal tuft of the tube well within the pecten. 



