CULEX SPHINX 301 



and a digit at tip. Head-hairs long, both pairs of dorsal tufts and ante-antennal 

 tuft multiple. Mental plate elongate-triangular, with a stout central tooth and 

 seven on each side, the last one remote but not much smaller. Mandible quad- 

 rangular; three filaments and a tuft of small hairs before tip; an outer row of 

 cilia from a collar; a row of short rounded ridges on front margin, each with a 

 little tuft of hairs; dentition of four teeth on a process, first and third longest; 

 spined before, a tooth at base, a long serrate filament and five feathered hairs 

 within ; process below somewhat bent, obscurely furcate, with a longitudinal and 

 a transverse row of hairs ; basal angle small ; a row of long hairs within and 

 another row at base. Maxilla elongate, divided by a suture; inner half with a 

 double row of spines on margin and two rows of rather stout cilia ; a row of long 

 hairs at tip, running down next the suture ; outer half with the filaments a little 

 below the middle, preceded by a small group of hairs. Palpus slender, with four 

 rather long irregular apical digits. Thorax rounded, wider than long; abdomen 

 moderate, the anterior segments shorter ; lateral hairs multiple on first two seg- 

 ments, in threes on third and fourth, in twos on fifth and sixth ; sMn smooth. 

 Air-tube long, five times as long as wide, tapering outwardly, but straight at 

 tip, pilose apically ; pecten reaching nearly half the length of tube, the last teeth 

 detached ; single tooth broad, with from one to three basal branches on one or 

 both sides; six or seven large tufts along posterior margin, two within the 

 pecten, the others beyond it. Lateral comb of eighth segment of many spines in 

 a large triangular patch about five rows deep; single spine elongate, rounded, 

 fringed with spinules. Anal segment about as long as wide, ringed by the plate ; 

 dorsal tuft a long hair and brush on each side; ventral brush well developed, 

 confined to the barred area. Anal gills only two, short, thick and rounded, 

 about half as long as the segment. 



The life history and habits are unknown. 



The larva shows considerable and unusual amount of variation in the number 

 and arrangement of the pecten-teeth of the air-tube, and also in the arrange- 

 ment of the tufts on its ventral surface ; it is nevertheless readily recognized by 

 the other characters, the spieular-pilose surface of the air-tube and the single 

 pair of anal gills. We suspect from the reduction of the anal gills that the larvae 

 are inhabitants of salt or brackish water. 



Bahama Islands, West Indies. 



Most unfortunately no adults were obtaiaed by the collector. Dr. T. H. Coffin, 

 which can be authentically associated with these larvae, nor is the exact locality 

 known to us. Dr. Dyar did not meet with the larvae on Kew Providence Island, 

 though making a special search for them in February, 1915. 



CULEX SPHINX, new species. 

 Culex territans Coffin (not Walker), in Shattuck, The Bahama Isls., 288, 1905. 

 Descbiption or Female and Male of Cttlex sphinx (Laeva Unknown) : 



Female. — Proboscis moderate, subcylindrical, very slightly expanded at tip, 

 labellse eonieally tapered, pale; vestiture of dull-brown scales with a slight luster, 

 somewhat paler beneath, particularly on basal portions. Palpi short, one-fifth 

 as long as proboscis, slender, black, with a few outstanding setae. Antennae 

 rather long, joints subequal, rugose, pilose, black, second joint pale at base; 

 tori subspherical, vrith a cup-shaped apical excavation, luteous brown, darker on 

 inner side ; hairs of whorls sparse, moderate, black. Clypeus rounded triangular, 

 doubly excavated at base, brownish, nude. Occiput blackish brown, clothed with 

 narrow, curved pale-brownish scales, margin of eyes white, many erect, forked 

 pale-yellowish scales on nape ; a row of black bristles along ocular margins. 



Prothoracic lobes elliptical, remote dorsally, with pale scales and brown 

 bristles. Mesonotum pale brownish-gray, a brown patch over roots of wing, the 



