MUSTELA. 421 



palatal length, 34; zygomatic breadth, 45.5; postorbital width across 

 processes, 23; interorbital constriction, 19; skull only known. 



1020. Mustela boria Elliot. 



Mustela boria Elliot, Proc. Biol. Soc. Wash., xviii, 1905, p. 139. 

 Farthest North Marten. 



Type locality. Lower Mackenzie River District, towards Arctic 

 Ocean. 



Genl. Char. Darkest in color of American Martens. Tail long, 

 black. 



Color. Sides of head grayish white; nose and top of head light 

 brown and gray mixed ; entire body above and below bvimt umber, 

 blackish on dorsal region ; entire throat beneath blotched with orange ; 

 fore and hind legs black; tail black, base of hairs on proximal half 

 burnt umber; ears like body externally, white internally. 



Measurements. Total length, nose to end of hairs of tail, 785; 

 tail, end of hairs, 267; hind foot, 85. (Skin.) Skull (broken): zygo- 

 matic width, 50; intertemporal width, 16; length of nasals, 15; width 

 of rostrum at canines, 18; palatal length, 41; length of upper tocth 

 row, outer edge of canine to posterior edge of last molar, 30; length 

 of mandible, 51 ; length of lower tooth row, 36. 



1021. Mustela kenaiensis (Elliot). 



Mustela americana kenaiensis Elliot, Pub. Field. Columb. Mus., 

 Ill, 1903, p. 151, pi. XXXII. Zool. Ser. 

 Kenai Peninsula Marten. 



Type locality. Kenai Peninsula, Alaska. 



Geogr. Distr. Range unknown. 



Genl. Char. Smaller than M. a. actuosa; tail longer; feet shorter; 

 color darker; no gular or abdominal patches; audital bullae large, 

 ridged, rectangular, longitudinally produced ; molar heavy; sagittal 

 crest prominent. 



Color. Above tawny buff and black ; top of head dark gray ; 

 forehead, top of nose, and sides of head brownish white: sides of nose 

 dark brown; chin and throat uniform dark ochre; under parts dark 

 chocolate brown; inguinal region pale buff; outer fore legs above 

 chocolate brown; feet black with grayish patch at toes beneath; 

 hind legs and feet blackish ; chocolate patch at base of toes above ; 

 tail black, chocolate at base; ears brownish black. 



Measurements. Total length, 790; tail vertebrae, 293; hind foot, 

 90. (Skin.) Skull: occipito-nasal length, 79.5; Hensel, 75; zygo- 

 matic width, 50; interorbital breadth, 18; mastoid breadth, 35.5; 

 length of nasals, 8; palatal length, 39.5; post-palatal length, 34.5; 

 length of pterygoid fossa, 12: length of bullae, 17; length of upper 



