May, '04] ENTOMOLOGICAL NEWS. 151 



beginning while the sun was yet well above the horizon and 

 continuing until the middle of the morning. Should this spe- 

 cies prove to be a malaria-carrier, there would be no chance of 

 avoiding it without confinement in a mosquito-proof shelter 

 from 3 P.M. of one day to u A.M. of the next. Indeed, on 

 cloudy days specimens are on the wing almost all day. 



In general appearance the larva does not differ from those 

 of maculipennis and pundipcnuis, but range only from 5^2 to 

 6 mm. in length. The color in general is a dirty grayish 

 brown, the chitinized parts a clear light brown ; but this differs 

 and, in life, the specimens vary as much as in the case of the 

 other species. The head (Plate xii, fig. 2) is broadest just 

 behind the eyes, narrowing to a rounded front, the line inter- 

 rupted by an offset bearing the antenna. This offset is really 

 a distinct sclerite, immovably attached to the head, upon which 

 the antenna is articulated. The maculation of the head is 

 variable ; but, as a rule, the larger blotches are central, with 

 smaller spots arranged about it. There is a transverse row of 

 six branched hairs before the middle. The antenna (fig. 3) 

 is set with little spines, and is shorter, stouter and much 

 darker than in the allied species. At the tip are two long 

 spines or blades, partly serrated, on the inner edge two short 

 articulated processes, and six long hairs. A four-branched 

 hair arises from the shaft about one-third from base. The 

 mouth-brushes are very dense, the hairs simple. The mentum 

 (fig. 6) is elongate, obtusely triangular, with only a few blunt 

 teeth, similar to that in the allied species. The mandible (fig. 

 5) differs from that of maculipennis and punctipennis by having 

 four instead of three curved spines on the dorsal surface. The 

 maxillary palpus (fig. 4) has four spines and two spatulate 

 processes at its tip, and at a distance of about one-third from 

 tip a thick spine which divides into a number of branched 

 hairs. 



Thorax subquadrate, the angles rounded, with six lateral 

 tufts of branched hairs, and similar smaller tufts on the 

 dorsum. 



The first three segments of the abdomen have long, branched 

 hair laterally, the next four have small tufts of simple hair. 



