CULEX SALINAEIUS 375 



membrane beneath dark, a faint transverse dusky band before tip of each seg- 

 ment; hairs at tips of segments coarse, abundant, pale. 



Wings moderate, hyaline ; petiole of second marginal coll about one-fourth or 

 one-fifth as long as its cell, that of the second posterior cell shorter than its cell ; 

 basal cross-vein distant more than its own length from anterior cross-vein; 

 scales of veins bronzy, bluish black on costa, rather broadly linear, denser on 

 forks of second vein. Halteres whitish with brown knobs. 



Legs moderate, uniform ; femora clothed above with black scales with a bluish 

 and bronzy luster, beneath broadly white to tips, knees whitish ; tibise and tarsi 

 entirelv bronzy-black scaled with strong brassy luster beneath. Claw formula, 

 0.0-O.d-O.O. 



Length : Body about 3.5 mm. ; wing 4 mm. 



Male. Proboscis straight, gradually enlarged towards apex, vestiture black 

 above, paler beneath ^vith a whitish shade at middle. Palpi exceeding proboscis 

 by more than the length of the last joint, slender, apical part slightly enlarged ; 

 vestiture black, a pale ring on long joint before middle, last two joints with 

 broken line of whitish scales beneath ; abundant long black hairs at end of long 

 joint and on last two. Antenna plumose; last two joints long and slender, 

 rugose, pilose, black, the others short, whitish, with black enlarged rings at 

 insertions of hair-whorls ; hairs long, black ; tori entirely brown. Coloration 

 similar to the female. Abdomen elongate, depressed, dorsally with basal bands 

 broader than in the female, those on sixth and seventh segments expanded at 

 the sides to posterior angles; lateral ciliation pale and abundant. Wings 

 narrower than in the female, the stems of the fork-cells longer, vestiture sparser. 

 Claw formula, 1.1-1.1-0.0. 



Length : Body about 4.5 mm. ; wing 3.5 mm. 



Genitalia (plate 17, figs. 121 and 122) : Side-pieces over twice as long as 

 wide, tips rounded with a quadrate apical projection bearing three curved rods 

 with hooked tips, a leaf -like appendage and two setaj ; clasp-filament moderate, 

 slender with a terminal articulated spine. Harpes divided, inner branch bear- 

 ing a large tuft of spines at tip, outer long and recurved; harpagones divided 

 into a number of teeth. Unci obscured. Basal appendages, short, remote, setose. 



Larva, Stage IV (see figure of the entire larva, plate 55), Head large, 

 subquadrate, wider than long, front margin feebly arcuate. Eyes slightly 

 bulging, transverse, bluntly pointed. Antenna elevated on a triangular in- 

 sertion, long, curved, terminal third narrow, a small process bearing a very 

 large tuft of feathered hairs, below which the thick basal part is densely spined 

 and pale colored ; two long subapical setae, a long seta, a short one and a small 

 digit at tip. Both pairs of dorsal head-tufts and ante-antennal tufts multiple, 

 long. Mental plate quadrate, triangular at tip, a stout central tooth followed 

 by five small teeth on each side and three larger ones below, the first of these 

 projecting above the small lateral teeth. Mandible quadrangular, nearly square ; 

 two long filaments towards tip, with four slender ones arising from the same 

 point ; a row of cilia outwardly from a collar ; a row of spinose processes within 

 outer margin ; dentition of four teeth on a process, the first very large and some- 

 what spear-shaped; a long tooth before, three small irregular teeth at base, a 

 double filament and row of fine feathered hairs within; process simple, bent, 

 with tuft of hair at tip and a slight one near base ; angle below prominent ; a row 

 of hairs within ; a row of a few long hairs at base. Maxilla sharply conical, 

 divided by a narrow suture ; inner half with irregular patches of hair and a large 

 group of spines ; a row of long hairs at tip running along the suture ; outer half 

 with filaments near suture small and basally placed, preceded by a few hairs; 

 spine on other side subapical. Palpus very small, with four rather long irregular 



