REPORT OX MOSQUITOES. 329 



of the insect, but it seems certain that it makes small boats which 

 probably disintegrate rapidly, allowing the individual eggs to 

 sink to the bottom. 



Territans is not a traveler, and seems very local, even w here it 

 occurs in considerable numbers. 



Description of tJic Larva. 



The larva (Plate fig. 103, fig. i) when full grown measures 6-7 

 mm.,:=.24-.28 of an inch in length to the tip of the ninth seg- 

 ment. It is slenderly built, of a whitish or dirty yellowish color, 

 sometimes pale green, from the color of the food eaten. The 

 head is very large in proportion to the rest of the body, subquad- 

 rate in form and about one and one-half times as broad as long. 

 It is pale, creamy wdiite in color, and totally immaculate ; though 

 the orange-colored mouth brushes, when retracted, give the im- 

 pression of marks on the front of the head. On the anterior part 

 of the vertex are four hair tufts, each with tw'O long hairs, and 

 there is a large tuft of 6 or 7 hairs at the base of each antenna. 

 The eyes are comparatively small and occupy the widest part of 

 the head. The antenna (fig. 3) is large, white in color, with the 

 apical third and base back ; it is broad two-thirds from the base, 

 then, curving and becoming abruptly very narrow, there is 

 formed an offset upon which is a large tuft of long hairs. The 

 surface is covered with hair-like spines, and the apex has three 

 long bristles, a very short one and a little joint. The rotary 

 mouth brushes are composed of simple hairs, and are bright 

 orange in color. The mandible (fig. 4) is triangular, w^ithout the 

 usual row of long spines on the margin between the apex and the 

 two large curved spines. The maxillary palpus (fig. 5) is pale, 

 with long white hairs at the apex ; the basal joint extremely small 

 with rather large teeth at its tip. The mentum has 6 to 8 teeth on 

 each side of the apical one, and in form is broadly pentagonal; 

 but sometimes the teeth extend farther toward the base, cutting 

 off the lateral angles and giving a more triangular shape as 

 shown in the figures. 



The thorax is somewhat smaller than the head, and has acutely 

 angled lateral margins from which issue tufts of fine long hairs. 

 There are eight other tufts on the anterior margin, the central 

 tw^o longest extending forward over the head. 



The lateral margins of the abdominal segments are very nearly 

 parallel with the exception of the anterior two, which have lateral 

 prominences, giving rise to four hairs each, while the remaining 

 segments have but two hairs to the lateral tuft. There are small 



