CULEX LATISQTJAMA 303 



The following is an abstract of the table : 



1. Antennse with the tuft outwardly placed, the part beyond slender. . 5 

 5. Air tube four times as long as wide or over 7 



7. Anal appendages four, normal 8 



8. Air tube with four to ten paired tufts along the posterior line in a 



straight row, none displaced, or the hairs obsolete or absent. 18 



18. Air tube without a crown of spikes, smooth throughout 19 



19. Air tube with long well-defined tufts 20 



20. Body glabrous or lightly granular 26 



26. Air tube concave, the tip expanded 27 



27. Pecten of the air tube of long spines; antennae dark; lateral comb 



of the eighth segment scarcely over two rows deep. . . simulator 



Desckiption op Laeva of Culex simulator (Adult Unknown) : 



Larva, Stage IV (plate 105, fig. 352). — Head rounded, widest through eyes, 

 narrowed before, a large notch at insertion of antennae, front margin arcuate. 

 Antennae large, slightly curved, thick and spined on basal two-thirds, with a 

 large tnft from a notch ; apically, three long setae, a short one and a digit. Upper 

 pair of dorsal head-hairs double, lower single, ante-antennal tuft multiple. 

 Mental plate triangular, rather small, with a large, broad central tooth and seven 

 on each side, the fifth distinct and slightly projecting. Mandible quadrangular; 

 three filaments before tip ; an outer row of cilia from a collar ; a row of transverse 

 rounded prominences on outer margin bearing short hair-tufts ; dentition of two 

 teeth with a small one between and a group of short spines below ; a spine before, 

 a long smooth filament, a shorter one and a row of feathered hairs within ; proc- 

 ess below bent, subcapitate, obscurely furcate, with a transverse and a longi- 

 tudinal row of hairs and a slight tuft at tip of each limb ; basal angle moderate, 

 with a row of stout hairs within in line with basal hairs. Maxilla elongate, 

 divided by a suture; inner half with long spines along margin, basal ones 

 serrate ; a row of short spines within and some cilia at base ; a row of long hairs 

 at tip running down along the suture; outer half with two filaments at basal 

 third. Palpus rudimentary, with four long equal digits. Thorax rounded, 

 wider than long ; abdomen moderate, anterior segments shorter ; lateral hairs in 

 threes on first segment, single on second, double on third to sixth ; tracheae nar- 

 row ; skin glabrous. Air-tube slightly concave, a little widened towards tip, six 

 times as long as wide ; pecten long, reaching to basal third, single teeth coarsely 

 serrate on one side ; five hair-tufts on posterior margin beyond pecten. Lateral 

 comb of eighth segment of numerous spines in a patch about three rows deep ; 

 single spine elongate, widened at tip with an apical fringe of spinules. Anal 

 segment twice as long as wide, ringed by the plate ; dorsal tuft of long and short 

 hairs on each side; a small lateral hair; ventral brush well developed, confined 

 to the barred area. Anal gills long, longer than the segment, regularly tapered. 



The larvae live in swamps in forest. 



Trinidad, West Indies. 



Arima, larvae in open pools in high forest, July 10, 1905 (A. Busck). 



We have obtained no adults of Culex simulator. The larva somewhat re- 

 sembles that of Oulex territans in its apically expanded air-tube, but there is no 

 reason to suppose it necessarily allied to that species. 



CULEX LATISQUAMA (Coquillett) Dyar & Enab. 



Tinolestes latisquama Coquillett, Proc. Ent. Soc. Wash., vil, 185, 1906. 

 Culex latisquamma Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 222, 1906. 

 Tinolestes latisquama Coquillett, TJ. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 24, 1906. 

 Tinolestes latisquama Theobald, Mon. Culic, v, 627, 1910. 

 Oeiginai. DESCKipTioiir OF Tinolestes latisquama: 



Scales brown, the appressed scales of the occiput, venter, front angles of abdominal 

 segments, coxae, and under side of the femora at their bases, yellow. Front and 



