ICHNEUMON-FLIES — GELINAE : MESOSTENINI 361 



and Queen's Park in Aylmer) ; Vermont (Bennington) ; and Virginia 

 (Black Pond in Fairfax Co.). 



Collection dates are all from June 1 to July 19, except one for "May" 

 at Baldwin, Kans. 



This subspecies ranges from the Atlantic Ocean to 100° west longi- 

 tude, in the Transition and Canadian zones. 



12. Trychosis albicaligata (Walsh) 



Figure 392 



Cryptus albicaligatus Walsh, 1873, Trans. Acad. Sci. St. Louis, vol. 3, p. 82; cf . 

 Type: cf , Illinois? (destroyed in Chicago fire of 1871). 



Similar to T. exulans in size, structure, and color except as follows: 

 Clypeus a little less convex; head a little wider; temple distinctly 

 convex; lower part of occipital carina elevated as a low lamella that is 

 about 0.4 as wide as third segment of maxillary palpus; blacldsh colors 

 of body averaging a little darker; and base of hind tibia of male 

 entirely blackish, never with a basal dorsal light brown area. 



The original description of albicaligatus agrees with both this species 

 and with T. exulans. The type is destroyed. As first revisers, we 

 restrict the name to the present form. It may turn out to be only 

 a variety of exulans, as the difference is small and a few specimens 

 tend to be intermediate. 



Specimens (10 cf, 69): From Connecticut (Lyme); District of 

 Columbia (Washington) ; Indiana (Lawrence Co.) ; Kansas (Lawrence) ; 

 Maryland (Takoma Park) ; Michigan (Ann Arbor, George Reserve in 

 Livingston Co., and Oaldand Co.) ; New York (Hamburg and Medina) ; 

 Texas (Austin); and Virginia (Falls Church, Meadows of Dan, 

 and Vienna). 



Collection dates are from mid-spring to early summer. The 

 earliest and latest records are: April 22 at Vienna, Va.; April 28 at 

 Meadows of Dan, Va. ; May 2 at Takoma Park, Md. ; June 14 at Lyme, 

 Conn.; and June 23 in Oakland Co., Mich. 



This species occurs in the Carolinian fauna. 



13. Trychosis exulans (Cresson) 



Figure 393 



Cryptus exulans Cresson, 1872, Trans. Amer. Ent. Soc, vol. 4, p. 157; "cf"= ?. 

 Type: 9 , Comal Co., Tex. (Philadelphia). 



Front wing 6.3 to 8.8 mm. long; clypeus rather small, moderately 

 convex, its apical margin weakly arcuate except laterally, where it is 

 strongly upcurved; temple faintly concave, flat, or sometimes faintly 

 convex, next to occipital carina faintly to distinctly convex; cheek 

 long, with coarse crowded punctures; occipital carina sharp, its lower 



589900—62 24 



