SKULL. 283 



Measurements of the Metacarpal and Phalangeal Bones of an Adult Female* 



Measurements of the Metatarsal and Phalangeal Bones of an Adult Female. 



Length of pes (posterior end of 03 



calcis) to end of , 



Length of metacarpal of ; 



Length of 1st phalanx of 



Length of 2d phalanx of 



Length of 3d phalanx of 



Length of nail of 



1st digit. 



280 

 79 

 75 

 40 



2d digit. 



260 

 61 

 60 

 46 

 16 

 16 



3d digit. 



255 

 60 

 57 

 48 

 16 

 18 



4th digit. 



250 

 60 

 54 

 48 

 16 

 15 



5th digit 



250 

 65 

 58 

 37 



00 



Skull. The skull in Zaloplius calif ornianus, as compared 

 witli the skull in allied genera, is remarkable for the narrow- 

 ness and great elongation of the facial portion, which is even 

 much more elongated and slenderer than in ArctocepTialus. In 

 its general configuration (excepting, of course, the great devel- 

 opment of the sagittal and occipital crests in the very old males) 

 it more resembles the Arctocephaline type than any other. 

 The maximum breadth (*. e., at the zygomata) in the females 

 barely equals or falls a little short of half the length, while in 

 the old males it rather exceeds this proportion. In very old males 

 the crests of the skull are enormously developed, and, con- 

 trary to what usually obtains in the other genera of this family, 

 are considerably developed in very old females. The superior 

 outline (in old males) slopes rapidly from the high sagittal 

 crest to the end of the nasals. The postorbital processes are 

 long and rather narrow, and are directed backward in old agej 

 the nasals are long and narrow, decreasing in width posteriorly. 

 The superior edge of the intermaxillge is very narrow, and is 

 prolonged backward nearly to the middle of the nasals. The 

 postorbital cylinder is long and narrow, and often abruptly 

 contracted posteriorly. The bony palate is nearly flat, but httle 

 depressed, and is rather deeply emarginate posteriorly. The 



'Specimen No. 6159, Coll. Mus. Comp. Zoology. 



