TRICHECHUS. MACRORHINUS. 359 



ference in the color of the Atlantic and Pacific Walrus. Bristles 

 "short, stubbed, grayish white." 



M<asuriiii(nts. Male, total length, about 3350: weight, about 

 2,000 lbs. 



Fam. III. Phocidae. 



Neck short; hind limbs useless for terrestrial progression; palms 

 and soles of feet hairy; no external ear; testes abdominal, no scrotum; 

 skull without postorbital processes and no alisphenoid canal; audi- 

 tory bulhi' inflated. Five developed claws on each foot, those of hind 

 feet subequal, the first and fifth not greatly exceeding the others in 

 length; not extending beyond toes. 



Sub. Fam. I. Cystophorinae. 



88. Macrorhinus. 



I. ?=?: C. ^'; P. ^^ M. i^" = 30. 

 1—1 i-i' 4—4' I— 1 -> 



Macrorhinus. F. Cuv. Mem. du Mus., 1824, xl, p. 200, pi. xiii. 

 Type Phoca Iconina. Linn. 



Mirounga. Gray, Griff. Anim. King., 1827, v, p. 179. (Part.) 



Rhinophora. Wagl. Nat. Syst. Amph., 1830, p. 27. 



Moiunga. Gray, List. Ost. Spec. Brit. Mus., 1M47, p. 33. 



Teeth small, one rooted; hind feet without nails; nose of adult 

 male elongated into a tubular proboscis, capable of dilatation and 

 extension; palate short, emarginate. 



528. angustirostris. {Mitcroihiiuis), Gill, Proc. Chicago Acad. Scien., 

 1866, p. 331. 



Type locality. St. Bartholomew's Baj', Lower California. 



Geogr. Distr. Cape Lazaro to Point Reyes, coast of California. 

 Now practically extinct. 



Genl. Char. Superior outline of skull irregularly arched from the 

 lambdoidal suture to end of the nasals. Snout of male lengthened, 

 narrowed at end, widest behind last molar and equal to three times 

 and a half the total length of skull. Squamosal truncated above the 

 meatus auditorius. Palatines short, the posterior sinus semi-oval, 

 the bottom being about midway between the snout and the line of 

 the jugular foramina. ISIaxillaries deeply incurved, line of molars 

 incurved. Group of bristles over each ej-e. Hind flippers emargin- 

 ate, hairy without nails. 



Color. Light brown generally, becoming bluish after the hair is 

 shed. 



Measurements. Total length, Male, 18-20 feet. Female, total 



