1. MARTES. 85 



the dark-headed one of the •western country like the Pine-Marten. 

 I have never seen winter specimens of the latter, nor summer of the 

 former, and am inclined to believe that all may exhibit more white 

 on the head in winter than in summer." — Baird, I. c. p. 157. 



It is curious that both Brandt and Baird seem to have overlooked 

 the small size of the last tubercular grinder, which separates the 

 American from the Old- World Pine-Martens. 



The brain-case ia the skull of the American specimen we have in 

 the Museum is very thin, and so closely applied to the brain that it 

 shows its convolutions on the outer surface ; but this is not shown 

 in the American skull figured by Dr. Spencer Baird. The same is 

 to be observed in the Altaic specimen of M. ahietwm. 



There is a series of specimens of the American Pine-Marten in 

 the British Museum, collected by Dr. Lord during his excursion with 

 the Boundary Commissioners. They vary greatly in colour, from 

 pale brown to nearly black ; and the throat is variously mottled 

 with yellow. 



The specimens from Eussia have whitish heads, like the M. leucopus 

 of Euhl. 



The stuffed Sables from Eussia have short tails ; but the tail of 

 one of Dr. Lord's is almost as short : the tail seems to vary in 

 length ; but this may depend on the skinning, and, in the stuffed 

 skins, on the preparation of the animals. 



** Tail elongate, slender ; skull elongate, narrow ; nose produced ; up2}er 

 tubercular grinder massive, broader mi the inner side, Pekania. 



7. Martes Pennantii. (The Wood-Shock.) B.M. 



Black ; head, nape, and front of back greyish ; tail elongate. The 

 last upper tubercular grinder is large and massive, like that of the 

 European Pine-Marten {M. abietum). 



Mustela Pennantii, M-xl. Anim. p. 79, 1777 ; Baird, Mamm. N. A. 



p. 149, t. 36. £ 1 (akuU). 

 Mustela canadenais, Schreb. Sdugeth. p. 492, t. 134, 1778 ; Blainv. 



Osteogr. Mustela, t. 13. f. (teeth). 

 Mustela melanorhyncha, Bodd. Men. Anim. p. 188, 1784. 

 Viverra canadensis, Shaw, Zool. i. p. 492, 1800. 

 Mustela nigTa, Turtrni, 8. N. i. p. 60, 1806. 

 Mustela piscatoria, Lesson. 

 Viverra piscator, Shaw, Zool. i. p. 414, 1800. 

 Mustela Goodmanii, Fischer, Syn. Mamm. p. 217, 1829. 

 Gulo castaneus, H. Smith. 

 Gulo fen-ugineus, H. Smith. 

 Martes canadensis, Oray, Cat. M. B. M. p. 63 ; Oerrard, Cat. Bcmes 



B. M. p. 91. 

 Martes Pennantii, Ch-ay, P. Z. S. 1865, p. 107. 

 Fisher, Penn. Quad. p. 223. 

 Wejack, Seame. 



Wood-Shock, Hudson^ s Bay Comp. List. 

 Pekan {Canadians), Buff. H. N. xiii. t. 42. 

 Pekan Weasel, Penn. Quad. p. 203, 1781, 

 Black Fox, Leids li,- Clark. 



