60 COOK 



Type collected in Oregon, apparently by the Hayden Expedition. 

 The specimen is probably no longer in existence ; many of the Myria- 

 pods studied by Wood were destroyed by fire in the Smithsonian Insti- 

 tution. 



This species was secured by the Harriman Expedition at Lowe 

 Inlet, B. C. For comparison the U. S. National Museum has a spec- 

 imen from Portland, Oregon, and several from Comox Lake, Van- 

 couver Island, the male from which the figures were drawn being 

 from this locality. In addition to the notes given below with H. 

 intaminata, it may be said that the dorsum of what is taken to be the 

 true Polydesmus haydeniana is somewhat less convex, much more 

 distinctly rugulose, and of a more distinctly brown color than that of 

 the California specimens. The last segment is abruptly narrowed 

 below the very narrow subcylindric apex, which is tipped with brown. 

 The sides of this segment and the adjacent parts of the anal valves are 

 yellowish. No differences in the gonapods were detected, and it 

 seems strange that nobody has suggested the reduction of intaminata 

 as a synonym of haydeniana. 



A female specimen collected by Mr. A. D. Hopkins in June, 1902, 

 in a dense forest of the Olympic Mountains (No. 1062), is nearly 

 black in color, with the yellow areas of the carinaa smaller than usual 

 and the corners of the posterior carina? somewhat more produced. 

 The last segment is slightly constricted just below the truncate apex, 

 and has a slight prominence on each side above the constriction ; the 

 tip is dark brown. 



HARPAPHE INTAMINATA (Karsch). 



Polydesmus (Oxyurus) intaminatus KARSCH, Troschel's Archiv f. Naturg., 



XLVII, p. 41, 1881. 

 Leptodesmus intaminatus ATTEMS, Denkschr. Kais. Acad. Wien., LXVII, p. 



387, pi. vi, fig. 135, 1898. 



Type in the Berlin Museum ; from California. 



This species may easily prove to be a synonym of H. haydcniana, 

 but from the material studied it appears that California representatives 

 of this genus differ from Oregon specimens in having the dorsal sur- 

 faces smooth and shining, instead of distinctly coriaceous. The yel- 

 low areas of the carina3 are also somewhat larger and more brightly 

 colored. The last segment is shorter and not produced at apex ; in color 

 the apex is yellow throughout, but the sides and anal valves are dark. 



Neither Wood nor Karsch gives definite localities. Attems studied 

 specimens from Sisson, at the b?se of Mount Shasta, in northern Cali- 

 fornia, and also examined Karsch's type, though he does not say that 



