THE GENUS PISSODES. 51 



iting in the terminal of a pine sapling. Forty-nine specimens have 

 been examined, including all stages and work. 



Host tree. — Pinus ponderosa scopulorum, in thick bark on trunks 

 of trees, in base of saplings, and possibly in tops and terminals. 



Distribution (Plate XIX, fig. 8).— (Hopk. U. S.). Colorado: Estes 

 Park. Idaho: Centerville. South Dakota: Black Hills, Custer, Lead. 

 Washington: Buckeye (U.S.N.M.) Colorado: Breckenridge, Estes 

 Park, La Veta Pass, Leadville. Montana: Helena. South Dakota: 

 Custer. Washington: Buckeve. Canada: Alberta, Banff Springs. 



Bibliography and Synonymy. 



Pissodes costatus (^not of Mann.) Hopkins, 1906, p. 254, fig. 63. 



9. Pissodes canadensis n. sp. 



The type specimen is labeled "Type No. 7431, U.S.N.M.;" 

 name; "Winnipeg, Man[itoba], Hanham; 9 L" This, with two 

 other specimens, a male and a female, were found in the Wickham 

 collection in the United States National Museum under P. strohi. 



Distinctive characters. — This species may be easily confused with 

 P. approximatus by its general external appearance, but the differ- 

 ence in the fork of the male genitalia indicates that it is distinct and 

 more nearly related to P. nemorensis. It is distinguished from 

 P. approximatus by the somewhat stouter body and prothorax. The 

 alternate interspaces of the elytra are acutely rugose, the posterior 

 spots are more completely fused on the lateral area, and the beak is 

 longer. It is easily separated from P. nemorensis by the relatively 

 shorter beak and stouter body and fused posterior spots of the elytra, 

 as also by its distribution. 



Variations. — There is not much variation in the three specimens 

 except that the alternating elevated interspaces are less acutely rugose 

 in one specimen than in the other two specimens. Three adult 

 specimens were examined. 



Host tree. — Not known, but it is evidently pine. 



Distribution (Plate XX, fig. 9).— (U.S.N.M.). (Wickham Col- 

 lection) Canada: Manitoba (Winnipeg). 



10. Pissodes nemorensis Germar. 



(Plate XV, fig. C; text fig. 8, B.) 



The species is represented in the collection by a typical specimen 

 labeled with rectangular red label ; name ; ' ' Pinus; Calhoun, Ala. ; 

 A. D. Hopkins, Apr. 25, '05, bred; 9 1; Hopk. U. S. 1174d." 



Distinctive characters. — There seems to be little doubt that this is 

 the long unrecognized species described by Germar in connection 

 with the description of the genus and commonly referred to as 

 synonymous with P. strohi, with which it has been confused in col- 



