3 IS TEXTHKEDI-NID^:. 



170. Tenthredo hudsoni. 

 (Plate XII. fig. 15.) 



Exp. al. 10 lin., long. corp. 5 lin. 



Black ; antenna? more or less piceous, the third joint longest, 

 fourth and fifth of equal length, the remainder shorter ; face, a 

 triangle above, lower orbits, collar, Scutellaria, cenchri, and two 

 spots above the posterior coxa? yellow ; tegulae reddish ; legs rut'o- 

 testaceous, four hind femora and part of the apex of tbe tibia? above 

 black ; segments 3 and 4 of the abdomen more or less reddish above. 

 Wings yellowish hyaline ; nervures reddish brown. 



Hah. Hudson's Bay. 



a-e. 2 • (Types.) St. Martin's Falls, Dr. Barnston. 



Albany River. 



171. Tenthredo borealis. 

 (Plate XII. fig. 13.) 



Exp. al. 9 lin., long. corp. 5 lin. 



Black ; antenna? piceous, especially at the base ; face, collar, tegula?, 

 cenchri, and two spots above the hind coxa? pale yellow ; legs yel- 

 lowish, tarsi shading into reddish ; a line above the anterior femora, 

 the four hind femora, and the tips of the hind tibiaB black. Segments 

 4-7 of the abdomen with rufous markings ; segment 5 entirely 

 rufous above and below. Wings yellowish hyaline, with brown ner- 

 vures ; costa yellow, extremity of the stigma brown. 



ffab. Hudson's Bay. 



a, b. 2- (Typos.) St. Martin's Falls, Dr. Barnston. 



Albany ] liver. 



1 72. Tenthredo cinctitihiis. 



Tenthredo cinctitihiis, Norton, Trans. Amer. Ent. Son. ii. p. 2:50, n. 31 

 (1869). 



II ah. Hudson's Bay. 

 a-c. 2 - St. Martin's Falls, Albany River. Dr. Barnston. 



173. Tentlrredo decorata. 

 Tenthredo decorata, Provancher, Nat. Canad. x. p. 200 (1878). 

 Hah. Canada. 



174. Tenthredo funiipinnis. 



Tenthredo fumipennis, Norton, Trans. Amer. Ent. Soc. ii. p. 230, n. 32 

 (18(39). 



Hah. California. 



