206 THE CANADIAN ENTOMOLOGIST 



Holotype, 9 , Coy Glen, Tompkins Co., New York, altitude 

 800 feet, Feb. 25, 1917 (R. C. Shannon). 



The type is in the collection of the collector. 



Chionea gracilis, sp. n. 



Size small; form very long and slender; head round; femora 

 not swollen. 



Male. — Length 3.9 mm.; diameter across the thorax, .6 mm. 



Mouth parts and palpi yellowish. Antennae yellow, the 

 scapal segments long and slender, the flagellar fusion-segment 

 long and slender, conical. Head rounded, yellowish. 



Thorax brownish yellow. Halteres yellow. Legs yellow, 

 the tarsi scarcely darkened. 



Abdomen long and slender, about twice the length of the 

 combined head and thorax. Male hypopygium not conspicu- 

 ously enlarged, the pleurites slender, the appendage vei'y long and 

 slender, cur.ved, narrowed at the tip and nearly as long as the 

 pleurite. 



The body and legs are provided with a sparse covering of 

 short, pale hairs. 



Holotype, cf, Ithaca, Tompkins Co., New York, December 

 21, 1914. 



The description of C. scita Walker indicates a form that is 

 longer than C. valga Harris {aspera Walker) and having black 

 antennae. It seems probable that C. scita is the female of C. 

 valga, the females of Chionea having the legs more slender than 

 those of the male, and v/ith the body more elongate and slender 

 (see Emerton's figures, in Johnson's paper, "The Snow-fly, Chionea 

 valga Harris," Psyche, vol. 14, p. 43; 1907). 



A key to the Eastern Americaji species of the genus Chionea. 



1. Body-coloration gray noveboracensis, sp. n. 



Body-coloration reddish or yellowish 2. 



2. Form long and slender; (length of the male less than 4 mm.; 



diameter across the thorax about .6 mm.) ; all the legs 



elongate, slender, not at all thickened gracilis, sp. n. 



Form stouter; (length of the male over 4 mm.; diameter across 

 the thorax 1 mm. or over) ; at least the posterior legs of the 

 male incrassated 3. 



