MOSQUITO BIOLOGY 177 



yellowish ones at bases of two last joints, a narrow pale ring at basal 

 third of long joint and a long patch dorsally at its apical third. An- 

 tennae plumose; last two joints long and slender, rugose, pilose, black, 

 the others short, slender, whitish, with thick black rings at insertions 

 of the hair whorls ; hairs long, dense, black. Coloration similar to the 

 female. Legs with a strong bronzy luster, the tarsal rings obsolete. 

 Wings narrower than in the female, the stems of the fork-cell longer, 

 vestiture sparse. Abdomen elongate, depressed; dorsal pale bands 

 broader than in the female ; lateral ciliation long and abundant, brown- 

 ish. Claw formula, 2.1-2.1-0.0. 



"Length : Body about 5.5 mm. ; wing 4.5 mm. 



"Genitalia : Side-pieces elongate, conical, uniform, without lobes ; 

 clasp-filament long, uniform, slightly enlarged at base with a small 

 inserted terminal claw; a rounded lobe within base of side-piece bear- 

 ing a row of stiff setae. Harpes simple, curved, with revolute margins. 

 Harpagones small, curved, simple. Unci forming a slender, elongated 

 cone reaching beyond middle of harpes. Basal lobes short, rounded, 

 bearing, several setae. 



"Larva, Stage IV. Head square, transverse, a notch at insertions of 

 antennae, the front margin rounded, flat before ; eyes large, transverse. 

 Antennae large, cylindrical, tapered without, densely spined ; a large 

 tuft at outer third; apical setae very long, two some distance before 

 tip, a long and a short one and a small digit at tip. Upper pair of 

 dorsal head-hairs quadruples, lower pair double ; ante-antennal tuft 

 multiple. Mental plate triangular, a central tooth and nine on each 

 side, becoming progressively larger and more remote toward base, ex- 

 cept the last two which are very small and distantly spaced. Mandible 

 quadrangular, elongate ; two filaments before the tip arising in a thorn- 

 shaped notch with two small hairs ; an outer row of cilia from a collar ; 

 a row of little tufts along the outer edge arising from slight transverse 

 ridges ; dentition of four teeth on a process, the first the largest, with 

 two sharp teeth without, a small tooth at base, a slender filament and 

 a long row of feathered hairs within ; a long conical tooth below ; fur- 

 ther below a furcate process bearing tufts of hair ; basal angle long 

 and slender; a long row of hairs toward the base. Maxilla conical, 

 divided by a suture; inner half hairy toward base, and a group of 

 stiff hairs at middle; a tuft of very long hairs at apex running along 

 the suture, outer half with hair toward the suture, the two filaments 

 small. Palpus small, with four terminal digits, the two next the maxilla 

 longest. Thorax rounded, wider than long; hairs abundant, very long, 

 the anterior prothoracic tufts exceeding the head. Anterior abdom- 



