Merriam — Nineteen New Bears from Western America. 141 



noid blade broad at base, curving strongly backward, the apex cutting 

 plane of condyle ; dentition remarkably light for so large a skull; canines 

 and molars (both upper and lower) surprisingly small. 



Remarks. — Ursus hoots is not related to any of the other mainland 

 species so far as I am aware, but is related to Ursus sitkensis of Baranof 

 and Chichagof Islands. It differs from sitkensis in somewhat smaller 

 size ; less elevated posterior frontal region ; broader postorbital processes ; 

 less broadly spreading zygomata ; shorter and less spreading mastoids ; 

 less vertical and more strongly recurved coronoid blade, the apex over- 

 arching a well defined coronoid notch; smaller molars (both upper and 

 lower) and smaller upper incisors. The large lower premolar has the 

 upturned heel of the Sitka bear, but lacks the posterior sulcus and pair 

 of cusplets of the grizzlies. 



Skull measurements ( d* ad. type). — Basal length 333 mm.; occipito- 

 nasal length 325; palatal length 179; zygomatic breadth 228; interorbital 

 breadth 96. 



Ursus eltonclarki insularis subsp. nov. 



ADMIRALTY ISLAND GRIZZLY. 



Type from Admiralty Island, southeastern Alaska. No. 205186 c? old, 

 U. S. National Museum, Biological Survey Collection, 1914. Purchased 

 from W. H. Case of Juneau. 



Characters. — A Grizzly closely related to eltonclarki and like it having 

 the Grizzly type of pm4 only faintly developed. External characters un- 

 known. 



Cranial characters. — Skull similar in general to that of eltonclarki, 

 agreeing essentially in basilar length, zygomatic breadth, length and 

 narrowness of palate and postpalatal shelf, and narrowness of postpalatal 

 notch, but diflfering materially in breadth of frontal shield, size of post- 

 orbital processes, and proportions of teeth. Frontal shield much broader 

 (interorbitally 82 mm. contrasted with 69 mm. ), less flat, shallowly sul- 

 cate medially; postorbital processes very much larger, broader, more 

 widely outstanding (distance across processes 120 mm. contrasted with 

 101 mm.) and more decurved; rostrum shorter; nasals shorter (89 mm. 

 contrasted with 105 mm. — probably not constant). Lower jaw more 

 massive ; inferior border of ramus longer and more sw^ollen ; outer side 

 of ramus not depressed or excavated below anterior base of coronoid; 

 coronoid blade narrower and higher. Canines (both upper and lower) 

 somewhat shorter; molars, especially M\ M^ and M2 decidedly larger. 



Skull measurements ( d^ old, type) — Basal length 311 mm.; occipito- 

 nasal length 310; palatal length 171; zygomatic breadth 216; interorbital 

 breadth 82. 



Ursus kluane sp. nov. 



Type No. 204188 6" old, U. S. National Museum, Biological Survey 

 Collection. From McConnell River, Yukon Territory, July 15, 1914. 

 Collected by Smith and Geddis. 



