APR. 1903. NEW SPECIES AND SIT.SPKCIKS OK MAMMALS ELLIOT. 171 



Gen. char. Size rather large but smaller than P. v. ingens ; 

 color dark, without any reddish tint so characteristic of P. v. 

 energumenus. Skull smaller than P. v. ingens and, as compared 

 with P. v. energumenus, has the audital bullae flatter and broader 

 and a' broader palate posteriorly; pterygoid fossa broader and 

 relatively shorter, considering the size of skull. Rostrum wider 

 and heavier; interorbital constriction greater, as is also the width 

 at the postorbital processes; interorbital length shorter; palate 

 wider at alveoli of incisors, and last upper molar smaller and 

 narrower. Well developed sagittal and occipital crests. 



Color. Entire upper parts, legs and feet, dark chocolate 

 without any red tints; under parts slightly paler with a white spot 

 on chin, and in some specimens a small one on chest; tail bushy, 

 blackish, slightly paler at base. 



Measurements. Total length, 710; tail, 180; hind foot, 65 

 (skin). Skull: occipito-nasal length, 59; Hensel, 60; zygomatic 

 width, 40; interorbital constriction, 10; mastoid width, 32; width 

 of brain case, 30; palatal length, 28; length of bullae, 15; breadth 

 of rostrum, 15; length of nasals about 9 (bones of rostrum 

 ankylosed); width at postorbital processes, 18; from postorbital 

 process to anterior margin of frontals, 18 (diagonally); mandible 

 from angle to alveolus of incisor, 35; height at angle, 6; at 

 coronoid process, 19. 



This is a very dark mink, easily distinguished from P. v. 

 energuminus in color by the total absence of any red tint, and by 

 the various cranial differences stated above. In color it resem- 

 bles more nearly examples of P. vison from eastern North Amer- 

 ica, but is larger than that species, though possibly specimens 

 of P. v. lutreocephalus from the Atlantic coast might equal it in 

 size. From P. v. ingens it differs in being smaller (the skull 

 described, though that of an old male, being much less in all its 

 measurements), and also in its very dark coloring, P. r. ingens 

 being a pale form. Several specimens were received from the type 

 locality, all about alike in color; if any difference was perceptible 

 it was that some were even darker than the type. Mr. Bangs 

 kindly compared my specimens with his series of P. v. energu- 

 minus, and his conclusions were in accord with mine expressed 

 above. His examples were in both worn and full pelage, while 

 the P. v. enfrguminus in the collection of this Institution are not 

 in full coat, having been taken on the 3Oth September. The 

 Kenai specimens are in full winter pelage. 



