186 E. T. CRESSON. 



2. morulus. 



Ichneumon morulus, Say, Contrib. Macl. Lye. i, p. 73. 



Tchnenmon calcaratus, Prov. Nat. Can. vii, p. 49, % . 

 Hah. — Can., Ct., N. Y., N. J., Va. Black; face, clypeus, scape be- 

 neath, and sometimes spot on scutellum % , and annulus on flagellum 

 9 , white or pale yellowish ; tibiae and tarsi bright yellow ; wings 

 uniformly fuliginous. Length % 9 .GO — .(55 inch. 



3. pacificus, Cress. Proc. Cal. Acad. Nat. Sci. 1877. 



Hab. — Vancouver's Island. Black; annulus on flagellum 9 , and 

 sides of face % , white; clypeus and scape beneath % , and legs % 9 , 

 fulvous ; tips of posterior tibiae and base of their tarsi 9 , blackish ; 

 wings uniformly fuliginous, with a strong violaceous reflection. Length 

 % 9 .56— .70 inch. 



4. scutellatus. 



Ichneumon scutellatus, Prov. Nat. Can. vii, p. 78, % , 

 Hah. — Canada. Black; face, clypeus, spot on scape beneath, annu- 

 lus on flagellum, scutellum and tarsi white; segments one to three of 

 abdomen, and femora except tips of posterior pair, ferruginous; wings 

 hyaline ; scutellum elevated into a transverse subacute edge. Length 

 % .45 inch. 



Ichneumonides amblypygi. 



Scutellum flat or convex AMBLYTELES. 



Scutellum strongly elevated, subpyramldal TB06TJS. 



AMBLtYTELiES, Wesm. 

 The following table will readily distinguish the species. 



FEMALES. 

 Metathorax without spines. 

 Abdomen black or blue. 



Posterior legs black or blue, their tibiae immaculate. 

 Apex of abdomen immaculate; scutellum black or blue. 



Body black 1. exciiltll!^. 



Body dark steel-blue 2. niontauui^. 



Apex of abdomen marked with white; scutellum pale 3. tctrieus. 



Posterior legs black, their tibiae with white annulus... 5. perllictuosuiii. 



Posterior legs black, their femora ferruginous 9. monuouus. 



Posterior legs ferruginous, tips of tibiae and tarsi black. 



Abdomen fusiform 10. Ornieniis. 



Abdomen narrow, slender 11. Bclaiigeri. 



Abdomen black, with a broad yellow band at base of second and third seg- 

 ments 14. biiasciattis. 



Abdomen black, segments 2 and 3 ferruginous, yellowish at base; a])ex of 4 

 and following segments narrowly yellowish 16. robiistiis. 



