732 MOSQUITOES OP NOETH AMEEIOA 



brush well developed, with small tufts preceding the barred area nearly to the 

 base. Anal gills long, ensiform, tapered to a sharp point. 



Pupa (plate 149, fig. 703). — ^Thoracic mass pyriform, stout; small hair-tufts 

 on the dorsum anteriorly and posteriorly ; air-tubes small, slender, but slightly 

 expanded. Abdomen stout, rather long, with numerous small hairs and tufts 

 on the segments, the posterior lateral hairs single. Anal paddles large, elongate, 

 broadly rounded posteriorly, with a single terminal seta. 



The species hibernates in the egg state and the larvae occur in temporary 

 ground-puddles, appearing in the spring and at intervals during the summer, 

 whenever the puddles are filled by rains. The females bite readily by day. 

 There is apparently a tendency for most of the eggs to hatch early, especially in 

 the southern parts of the range of the species. Professor Smith, who has ob- 

 served the species in New Jersey, says : 



" There is every reason to believe that this species winters in the egg stage ; 

 first, because it has been found very early in the larval stage, in company with 

 species of which it is known that they winter in that way and, second, because 

 the larva has been found in pools dry during the winter and only filled by the 

 spring rains. The earliest dates are from Mr. Brakeley, who collected a mis- 

 cellaneous lot of larvae April 7th, from which adults of this species were 

 obtained April 13th. It may be in place here to say that these larvae are so 

 much like others that are found in the same pools early in spring that unless 

 attention is especially directed to them they readily escape recognition. The 

 next date, April 18th, is also from Lahaway, where the larvae were taken in com- 

 pany with those C. aurifer. The first pupa formed April 19th, giving adult on 

 the 24th ; the second formed on the 20th, giving adult on the 25th ; a five day 

 period in each case. The fact that this species is not a larval hibernate was 

 definitely settled when, on April 15th, nearly mature larvae were found by Mr. 

 Brakeley in a pool that had been completely dry during the winter. 



" April 24th, Mr. Grossbeck found pupae from which this species emerged, at 

 Mountain View, and May 2nd, Mr. Brehme found the same stage at Arlington. 

 Larvae, pupae and adults were found at Metuchen, May 7th, by Mr. Grossbeck, 

 who took quite a number of the early stages during the two or three succeeding 

 days as well. May 10th, pupae were taken in the Great Peace Meadows from 

 which adults emerged on the 11th and at the same place other pupae were taken 

 on the 21st, yielding adults on the 22nd. May 26th, larvae and pupae were taken 

 by Mr. Dickerson in the Black River Swamp in Morris County and a single 

 example of this species was identified among a lot of canadensis. 



" There are no records of later captures in any stage and it is fair to conclude 

 that there are no late broods. 



" Mr. Brakeley classes this among the local breeders ; that is, a species which 

 he can count upon finding every year in about the same places ; but which does 

 not occur in all bodies of water even under similar conditions." 



Dr. Dyar reared Aedes fuscus throughout the summer from rain-puddles in 

 New Hampshire, in company with Aedes canadensis and Aedes sylvestris. 



Canada and northern United States from the Atlantic to British Columbia, 

 less abundant southward to Arkansas. 



Center Harbor, New Hampshire, August 5, 1902 (H. G. Dyar) ; Springfield, 

 Massachusetts, May 10, 1903 (F. Knab) ; Westfield, Massachusetts, July 14, 30, 

 1903 (F. Knab) ; Longmeadow, Massachusetts, larvae May 7, 1905 (P. Knab) ; 

 Hartford, Connecticut, April 12, 1905 (F. Knab) ; Scott, Lonoke County, 

 Arkansas, April 14, May 20, 28, 1909 (J. K. Thibault, Jr.) ; Tupper Lake, New 

 York, August 11 (H. G. Dyar) ; Plattsburg, New York, larvae April 20, 1905 

 (H. G. Dyar) ; Ithaca, New York, May 28, 1901 (0. A. Johannsen) ; Delair, 

 New Jersey, June 21 (through J. B. Smith) ; Madison, Wisconsin (S. J. 



