May, '04] ENTOMOLOGICAL NEWS. 149 



was in the water covering a cranberry bog. This bog was dry 

 all during the summer of 1902 and until late in fall, when all 

 adult mosquito life had disappeared into hibernation or else- 

 where. The larvae were found so early that there could not 

 have been any eggs laid by hybernating individuals. It is 

 probable, therefore, that the eggs were laid on the bog itself 

 during the summer of 1902, like those of canadensis, and that 

 they hatched as soon as the temperature of the water began to 

 rise well above the freezing line. The habits of the larvae are 

 normal for the genus, and the duration of the pupal stage 

 varies from two to five days. 



The larva (Plate xi, fig. i) is from 7 to 9 mm. in length, 

 brownish black, tapering a little posteriorly. The head is 

 transversely elliptical, almost as broad as the thorax, broadest 

 just behind the eyes. The antenna (fig. 3) is white, tipped 

 with black, almost half as long as the head is broad, thickest 

 near base, tapering slightly to about the middle, then curved 

 inwardly to a blunt tip. The surface is set with small spines, 

 there are three long and one short spines at the apex, as well 

 as a little articulated peg. The tuft consists of from 6 to 10 

 hairs, and is situated above the middle at the obtuse angle 

 formed by the curve. In life the antennae are very conspicu- 

 ous, the black tip contrasting strongly with the white base. 

 The mentum (fig. 6) is broadly triangular, the height at mid- 

 dle equalling about half the width. Figure 2 shows the head 

 drawn from a cast skin, while the mandible and maxillary 

 palpus are respectively shown at 4 and 5. The hair on the 

 mouth-brushes is simple. 



The thorax is transverse, edges of the segments marked so 

 as to form three angles, each angle marked by a tuft of long 

 hair arising from a distinct tubercle. There are two smaller 

 tufts at the cephalic margin. 



Abdominal segments i to 6, inclusive, have lateral tufts of 

 long hair ; segment 2 has an additional tuft of short hair nearer 

 the hind angle, while segments 7 and 8 have short tufts only. 

 On the eighth segment the lateral combs consist of patches of 

 from 25 to 30 scales each, arranged as shown at figure 7 ; an 

 individual scale being shown from above and from the side at 



