MUSTELA. 4.21 



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

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



1020. Mustela boria Elliot. 



Mnstela boria Elliot, Proc. Biol. Soc. Wash., xviii, 1905, ]). 139. 

 F.\RTHEST 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 burnt umber, 

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

 fore and hind legs l)lack; 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 tooth 

 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 americatui kenaiensis Elliot, Pub. Field. Columb. Mus., 

 Ill, 1903, p. 151, ]>1. XXXII. Zool. Ser. 

 Kenai Peninsula Marten. 



Type locality. Kenai Peninsula, Alaska. 



Geogr. Distr. Range unknown. 



Genl. Char. Smaller than .1/. a. actnosa; 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 buflf; 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 



