414 MOSQUITOES OF NORTH AMERICA 



three portions, outer portion slender, bearing a spatolate filament at its tip, 

 three rods, a leaf-like appendage and a seta on its outer aspect, leai-like append- 

 age near base, seta at base, the two inner portions eoniiuent at bases, each bearing 

 a pointed tipped spatulate filament. Clasp-filament slightly enlarged at base, 

 inflated beyond middle, where a number of long hairs arise on inner side, an 

 articulated terminal claw. Harpes with a long, slender inner branch, bent at 

 tip and bearing a row of teeth. Harpagones short, divided. Basal appendages 

 elliptical, rather long, approximate at base, setose. 



Larva, Stage TV (plate 109, fig. 368). — Head rounded, widest through eyes, 

 bulging on sides, a large notch at iasertion of antennae, front margin arcuate. 

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

 large tuft from a notch ; two long subapical setae, a long' seta, a short one and a 

 digit at tip. Upper pair of dorsS head-tufts multiple, lower pair single; ante- 

 antennal tuft multiple. Mental plate triaiigulai^ with a large central tooth and 

 eight on each side, basal ones larger and remotely spaced, the last one small. 

 Mandible quadrangular; three filaments and a tuft of hairs before tip; an outer 

 row of cilia from a collar; a row of rounded transverse prominences well within 

 outer margin, each bearing a long hair and a tuft of short ones ; dentition of four 

 irregular teeth on a prominence with some short sprues below; a spine before, a 

 long smooth filament and a row of feathered hairs within; process below ob- 

 scurely furcate, irregular on both sides, with a small transverse longitudinal 

 row of hairs and a tuft at tip of each limb; basal angle small, a row of hairs 

 within spreading out towards basal row. Maodlla elongate, rather squarely 

 terminated, divided by a suture ; inner half with a row of long spines on margin, 

 some of basal ones feathered ; two rows of cilia within toward base with some 

 small spines beyond; a stout articulated spine at the outer third ; a row of long 

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

 basal third. Palpus rudimentary, with four long apical digits. Thorax rounded, 

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

 threes on first segment, in twos on second, in threes on third to sixth segments ; 

 skin finely spinose. Air-tnbe long, straight, very slightly widened at base, over 

 ten times as long as wide; pecten reaching to basal sixth, single teeth serrate 

 along one side ; four small, sparse tufts along posterior margin, the third out of 

 line with the others. Lateral comb of eighth segment of many spines in a large 

 triangular patch; single spine elongate, widened at tip, with an apical fringe 

 of spinules. Anal segment twice as long as vnde, ringed by the plate; dorsal 

 tuft of two long hairs and a short one on each side ; ventral brush well developed, 

 confined to the barred area. Anal gills rudimentary, slender, the upper pair a 

 little longer. 



The larvae live in the water in the holes made by certain species of crabs along 

 the shore. Mr. Busck got them twice in such situations. The water in the holes 

 was fresh. The habits of the adult are unknown. 



Island of Santo Domingo, West Indies. 



Santo Domingo, south of city, August 7, 1905 (A. Busck) ; Santo Domingo, 

 near edge of river, August 8, 1905 (A. Busck). 



CULEX ELEVATOR Byai & Enab. 



CvXex elevator Dyar & Knab, Journ. N. Y. Ent. Soc, xlv, 207, 217, 1906. 

 CvXex educator Dyar & Knab, Journ. N. Y. Ent. Soc, xlv, 207, 217, 1906. 

 Culex elevator Busck, Smiths. Misc. CoIIb., quart. Iss., lii, 69, 1908. 



Origin AL Descbiption of Cmjsx eu;vatob: 



Antennee with the tuft beyond the middle, pale at base; head hairs single; body 

 hairy; two lateral hairs on the second abdominal segment, three on the third to sixth. 

 Air tube 6X1, nearly straight with very long pecten; Ave tufts on the posterior 

 margin; anal gills short. 



