716 MOSQUITOES or NOETH AMERICA 



and terminal filament nearly as long as the stem, the filament slightly widened 

 in the middle. Unci forming a small basal cylinder with two points. Basal 

 appendages small, rounded, with several stout setse. 



Type : No. 12373, U. S. Nat. Mus. 



Life history and habits unknown. 



Eastern Ontario, Canada. 



Ottawa, June 1 and 11, 1900 (J. Fletcher) ; Trenton, Ontario, May 24, 1900 

 (J.Fletcher). 



Aedes euedes is closely allied to Aedes riparius, but differs in the color of the 

 scales on the mesonotum. We have received it from eastern Ontario only, 

 riparius occurring farther west. 



AEDES EUOCHRUS, new species. 

 Desceiption of Femat.t! of Aedes euochetjs (Male and Lakva Unknown) : 



Female. — Proboscis moderate, uniform, labellse conically tapered ; light fer- 

 ruginous, the vestiture of oeherous yellow scales; setse minute, curved, yellow. 

 Palpi about one-fourth as long as the proboscis, clothed with oeherous yellow 

 scales, the apices whitish, the setse moderate, pale. Antennae with the joints 

 subequal, rugose, pilose, brownish yellow, second joint somewhat larger, oeher- 

 ous ; hairs of whorls rather short, sparse, light brown ; tori subspherical, with a 

 cup-shaped apical excavation, luteous brown. Clypeus rounded triangular, 

 prominent at base, luteous brown, nude. Byes black. Ocdput brown, clothed 

 with narrow, curved, light oeherous scales; many erect, slender, forked, light 

 oeherous scales; cheeks with broad flat whitish scales; hairs along margins of 

 eyes brownish yellow, those projecting between eyes yellowish white. 



Prothoracic lobes elliptical, remote dorsally, light brown, clothed with lanceo- 

 late pale scales and yellow-brown bristles. Mesonotum light oeherous brown, 

 clothed with lanceolate, curved, pale-ocherous scales, paler around the antescn- 

 tellar space, and with brownish yellow setse, which are abundant above roots of 

 wings. Scutellum trilobate, clothed with narrow, curved, whitish scales, each 

 lobe with a group of yellowish brown bristles. Postnotum light brown, elliptical, 

 prominent, nude. Pleuras light brownish yellow, coxse luteous, with patches of 

 elliptical whitish scales. 



Abdomen subeylindrical, tapering posteriorly ; dorsal vestiture of dull oeher- 

 ous scales, the segments with very broad, ill-defined, basal bands of dull creamy- 

 white scales, but slightly paler than the general coloring, dilated at sides of 

 segments to near apical angles, fourth segment nearly wholly pale scaled ; venter 

 creamy-white scaled. Cerci brown. 



Wings moderate, hyaline; petiole of second marginal cell considerably 

 shorter than the cell, that of second posterior cell about equal to its cell ; basal 

 cross- vein distant slightly more than its own length from anterior cross- vein; 

 scales of veins oeherous yellow, the outstanding ones ligulate, denser and 

 slightly broadened towards apex of wing. Halteres pale, with yellowish knobs. 



Legs moderate, ocherous-yellow scaled; femora paler beneath and at base; 

 tarsal joints with narrow whitish rings at their bases, obsolete on last two joints 

 of front and middle pairs and on last joint of hind ones. Claw formula, 

 1.1-1.1-1.1. 



Length : Body about 6 mm. ; wing 5 mm. 



Type : No. 12057, U. S. Nat. Mus. 



The larva and the life history and habits are unknown. 



British Columbia. 



Popcum, August 3, 1903 (J. Fletcher). 



Described from a single female sent by Dr. Fletcher, pinned on the same pin 

 with two specimens o;f a black-legged Aedes allied to lazarensis, which we are 

 not able to identify positively. 



