REPORT ON MOSQUITOES. 219 



in obtaining specimens with developed ova. Sollicitans is also 

 difficult to take when ready to oviposit, but it may be obtained by 

 close sweeping of the grass in the early evening. Tccniorhynchns 

 apparently refuses all invitations and hugs the ground until dark. 

 Just why the light has a special attraction for gravid females it 

 seems difficult to determine. 



As to the bite, that is much like that of sollicitans and, like 

 that species, tceniorhynchus takes no long thought in reaching a 

 proper spot ; any exposed place will answer and it has the same 

 ankle-seeking propensity that its allies have. I have never taken 

 it indoors, even along shore. 



The egg-laying habits are like those of sollicitans and the eggs 

 themselves have not been found separable from those of its ally. 

 In fact in my first experiments I bred more tccniorhynchns than 

 I did sollicitans from the egg-filled sods collected. 



Description of Larva. 



This larva which is figured on plate figure 64, with structural 

 details, has C. sollicitans for its nearest ally and, though differing 

 obviously in some of the details is, nevertheless, scarcely disting- 

 uishable from it in outline and color, besides its habits of breeding 

 in the same pools. It is 7 to 8 mm. ,=.28 to .32 of an inch in 

 length to the end of the ninth segment and is dirty gray or yel- 

 lowish in color. The head is one and one-half times as broad as 

 long and usually of a pale yellow color ; the sides and front shaded 

 with brown and sometimes, though rarely, the sides of the vertex 

 are bi-symmetrically marked. A faint crescent shaped mark, with 

 a black spot in advance and four others to the rear of it are usually 

 present, though it is common for one or more, or perhaps oc- 

 casionally all, to be absent. (See figure 60, 7 to 12). On the 

 front of the head are four single hairs arising from individual 

 pits, each pair separated laterally, and there is a small tuft of 

 four or five hairs at the base of each antenna. The antenna (fig. 

 6) is short and slender, with only a slight in and out-curve, the 

 apical half dark in color, light yellowish toward the base and the 

 surface with small scattered spines. The tuft has but two or three 

 moderate sized hairs, and is situated on the shaft at about the 

 middle; the apex has a few short bristles and one longer one, 

 besides a small joint. The rotary mouth brushes (fig. 2) have 

 the central hairs pectinated at the tip. The mandible (fig. 4) 

 and the maxillary palpus (fig. 5) are similar to those of sollici- 

 tans, but the palpus is shaped a little differently and has a long 

 apical tuft. The mentum is triangular with ten or twelve teeth 



