ICHNEUMON-FLIES — GELINAE : MESOSTENINI 483 



(Ottawa), d', reared from Salix, Colorado Springs, Colo., May 18, 

 1915, A. B. Champlain (Washington), cf , 9, reared from Saperda 

 moesta in Populus trichocarpa, Riggins, Idaho, Mar. 18 and 20, 1914, 

 Swartz (Washington) . 



This subspecies occurs in the Rocky Mountains. 



3b. Xylophrurus bicolor maurus, new subspecies 



Black. Hind orbit narrowly fulvous; flagellum of female with a 

 white band that occupies about 4 segments; wings faintly infuscate, 

 the front wing of female with a broad fuscous band just before areolet 

 and its apex weakly infuscate; apex of ovipositor sheath fulvous. 



Type: 9, Wright, Que., May 26, 1933, G. S. Walley (Ottawa). 



Paratypes: d^, Aweme, Man., May 21, 1925, N. Criddle (Ottawa). 

 d", Bells Corners, Ont., Apr. 30, 1941, G. S. Walley (Ottawa). 9, 

 Thunder Bay Beach, Ont., June 11, 1939, H. S. Parish (Townes). 



The range is from Quebec to Manitoba, in the Canadian zone. 



4. Xylophrurus nubilipennis (Cresson) 



Front wing 5.0 to 9.5 mm. long; head usually about 0.98 as wide 

 across temples as across eyes; temple with coarse, strong, very close 

 punctures, in some areas wealdy confluent in rows and with weak 

 wrinkles between; fourth segment of female flagellum about 3.8 as 

 long as wide; apical carina of propodeum usually present, its median 

 0.3 rh often weak or sometimes absent; second tergite mat, with 

 moderate-sized punctures that are separated by about 0.5 their di- 

 ameter; ovipositor sheath about 0.63 as long as front wing; teeth on 

 apex of ovipositor spaced a little more widely than in other Nearctic 

 species. 



There are three subspecies, distinguished on color as treated below : 



1. Wings uniformly infuscate; abdomen of female ferruginous; range: Saskatche- 



wan, British Columbia, and Utah. 



4c. nubilipennis abdominalis, new subspecies 



Wings hyaline to weakly infuscate, the front wing more or less distinctly 



banded except in some males that have the wings hyaline 2 



2. Hind femur black; range: east of Rocky Mountains. 



4a. nubilipennis luctuosus (Provancher) 

 Hind femur ferruginous; range: Colorado. 



4b. nubilipennis nubilipennis (Cresson) 



4a. Xylophrurus nubilipennis luctuosus (Provancher), new status 



Mesochorus luctuosus Provancher, 1874, Naturaliste Canadien, vol. 6, p. 299; 9. 



Type: 9, Quebec (Quebec). 

 Cryptoideus anthracinus Cushman, 1924, Proc. U.S. Nat. Mus., vol. 64, art. 4, p. 7; 

 9. Type: 9, Lyme, Conn. (Washington). 



Black. Hind orbit and upper part of frontal orbit usually narrowly 

 fulvous; clypeus and mandible partly ferruginous; female flagellum 



