160 Bulletin American Museum of Natural History. [Vol. XIX,, 



longer than the average in gichiganus and slightly exceeds the 

 largest. The skull is much more massive, though only slightly 

 exceeding in dimensions the largest skulls of gichiganus;. the 

 incisors are broader and thicker and the molars broader and 

 heavier, as are also the zygomatic arches. The lower j.aw is 

 also broader and heavier. 



21. Erignathus barbatus (Fabricius). 

 BEARDED SEAL. 



This species is represented by four adult specimens (skins 

 with skulls) collected by Mr. Buxton at Gichiga, Sept. 4, 

 1901, and two young adults collected by Mr. Bogoras at the 

 mouth of the Anadyr. They do not differ appreciably from.' 

 Greenland specimens, either in size or other features. Three 

 of the four specimens are females and the other is a male. 

 The male skull has a basal length of 213 mm. and a zygomatic 

 breadth of 122; two of the female skulls (one is much broken) 

 measure, respectively, 205 x 125 and 220 x 137 mm. 



The external measurements of three of the specimens, taken 

 in the flesh by Mr. Buxton, are as follows: 



No. 18166 No. i&i64 No. 18165 



* $ 9 



Length 2300 2095 2600 



Girth J 375 1410 I ^55 



" of head 600 605 620 



Distance between the eyes. 90 . 75 90 



Tail 215 215 275 



Hind foot 350 390 420 



"Local name, Nerpah; also sometimes called Locktock^ 

 which is the name generally applied to it in Kamchatka. 

 Also usually called Locktock at Marcova. A common winter 

 resident in Okhotsk Sea and along the eastern coast of Siberia 

 from Petropavlovsk to East Cape, and probably along the 

 whole northern coast. Mr. Jochelson has seen it at the 

 mouth of Kolyma River in summer. At Gichiga it is quite 

 common, especially during July, August , and September, but 

 does not ascend the rivers until after the ist of August, and 

 then only in small numbers. Mr. Sokolnikoff has, observed it 



