144 Proceedings of the Biological Society of Washington. 



nasal region sloping gently in plane of shield ; braincase long, its anterior 

 part keeling into elongate sagittal crest; zygomata moderately spreading 

 (becoming of course more strongly outbowed in old age); palate long, 

 concave, slightly arched antero-posteriorly ; postpalatal shelf large and 

 broad, nearly square; dentition rather light for size of skull; underjaw 

 long, its inferior border slightly sinnous (slightly bellied under last 

 molars); coronoid blade broad at base, not very high, the apex slightly 

 produced posteriorly but falling far short of plane of condyle. In old 

 age, as shown by the Lakelse River skull, the frontal shield becomes more 

 broadly and evenly concave, the posterior point even shorter, and the 

 postorbital processes more elongate, peglike, and elevated. 



Cranial comparisons. — The only described species requiring comparison 

 with kwakiutl is the very different pervagor (type skulls, both males, of 

 about same age). Ursus kwakiutl differs as follows: skull longer and 

 less highly arched; braincase and rostrum materially longer; frontal 

 shield posteriorly shorter-pointed; rostrum more elevated anteriorly, the 

 nasals more horizontal; postpalatal notch longer; underjaw decidedly 

 longer, but inferior border of ramus from symphysis to subangular 

 tubercle of essentially same length ; infra-angular border much longer. 

 Dentition heavier (both upper and lower canines, incisors, and molars 

 larger). 



Skull Measurements (c? ad. type). — Basal length 340 mm.; occipito- 

 nasal length 330 ; palatal langth 184 ; zygomatic breadth 212 ; interorbital 

 breadth 85. 



Ursus kwakiutl neglectus subsp. nov. 



ADMIRALTY KWAKIUTL GRIZZLY. 



Type No. 209889 c? old, U. S. National Museum, Biological Survey 

 Collection. From near Hawk Inlet, Admiralty Island, southeastern 

 Alaska. Collected April, 1914, by W. H. Spaulding. 



Characters. — Skull rather large and massive, fiat-topped, with rather 

 broad outstanding postorbitals. Frontal shield moderate, flattish, shal- 

 lowly sulcate, rather short-pointed; fronto-nasal region elevated in plane 

 of shield and slightly compressed; rostrum moderate, high; zygomata 

 moderately outstanding and somewhat bowed; postpalatal shelf short 

 and broad; notch rather broad. Underjaw rather short, ramus rather 

 flat and broad vertically, especially posteriorly; strongly bellied pos- 

 teriorly ; coronoid blade high and narrow, its apex not reaching plane of 

 condyle. Teeth moderate. 



Cranial comparisons. — Old male (the type) compared with adult and 

 old male kwakiutl from Jervis Inlet (the type) and Lakelse River (much 

 older): Size smaller; postorbitals broader ; shield more horizontal ; fronto- 

 nasal region elevated instead of depressed; zygomata less outbowed; 

 nasals more produced anteriorly, projecting broadly over nares (about 

 7 mm. beyond premaxillae at point of contact; nares more truncate; 

 underjaw much shorter; coronoid blade narrower. Upper canines and 

 crown of last upper molar longer. 



