Mosquitoes 33 c 
Aedes, n. sp. 
{Ochlerotatus.) 
A few larvae collected with Aedes nearcticus Dyar at Bernard harbour. 
Northwest Territories, represent an apparently undescribed form, but as there 
is no way of associating an adult, a name is not proposed. — 
Head hairs single; ante-antennal tuft in two; antennae long, slender, a two- 
haired tuft at the middle. Skin glabrous. Lateral comb of the eighth segment 
of fifteen scales in a narrow patch; single scale with long terminal thorn. Air 
tube about three times as long as wide, tapered on the outer half; pecten reach- 
ing beyond the middle, the last three teeth detached; hair tuft in four, situated 
within the last tooth. Anal segment ringed by the plate, the brush posteriorly 
directed; anal gills four, tapered, rather short. 
Aedes (Ochlerotatus) sp. 
A dozen females from Seward peninsula, Alaska, of an Aedes with dark- 
brown scales over, the mesonotum, the pile apparently less abundant than in 
A. nearcticus. No advantage would be gained by attempting to apply a name 
to this form, which must await the collection of males, or at least more perfect 
specimens. 
Locality: Three 9 9 , Teller, Alaska, July 29, 19 L3 (Frits Johansen) ; nine 9 9 , 
Nome, Alaska, August 24-25, 1916 (F.J.), Canadian Arctic Expedition. 
Vol. iii— 46963— 3 
