132 PATAGONIAN liXPEDlTIONS : ZOOLOGY. 



ruginous (rostroth). The hair on ihc upper part of the nock has a length 

 i)f 22 nun., on \\\c iniiKlIe of the baek, 18 nun., ami on the niicKlle of the 

 belly, 11 12 nun. The thick, sniooth-lyiui; short hair on the dorsal 

 surf ice o( ihc fore limbs extemis only to the micklle of the hand ami basal 

 portion o{ [he ph.ilanges. which are tipped with very small nails. The 

 distribution of the hair on the upper surface o( the hintl limbs is the same 

 as on the fore limbs. The n.iil on the outer toe of the foot is small, flat 

 And short : th.it on the inner toe simucw hat U^n^er. The three middle 

 toes h.uc will dexeloped nails. The skin Ikip at the end of the toes is 

 larsjest on the outci" toes and sm.iUer on the middle toes, beiuii" broadest 

 on the outer toe. 



l\>t.il len>;th from the eml o( the mtse to the end oi the tail, 1570 mm. ; 

 length of the ear ^^0; length oi the tail, 35 ; length oi the palm, 300; 

 length of the sole. 350: length of the membrane on the middle toes, 90- 

 105; length oi the skull. 235. (For further cranial measurements see the 

 table under ,7. dusfni/is, p. 128.) 



The specimen describeil by Or. Peters, as summ.iri/etl above, is a \oung' 

 adult male, as shown bv the illustrations oi the skull, in which the sagittal 

 crest is imly slightl)' developed. The e.ir is a[ip.ucntl\ .i little shorter 

 than in .7. nNsffn/is, but in other respects there are no ver\ m.uked ex- 

 ternal ditVerences between .7. nNstni/is and .7. piiilippii. 



Skull. — Skull long and n.irnnv. the {Posterior part much narrower than 

 in A. (ff/sfr(r/f\s\ though the skull .is a whole is much longer; rostral por- 

 tion also n.u rower. Kmger and much more sloping; nas.ils .ibout one 

 third longer .uul much n.irrower ; dentition much hea\ icr, .uul the acces- 

 sory cusps gener.dly wholly .ibsent or rudimenl.u\- ; palate nearlv tkit, 

 not vaultcil as in ,7. ti/zs/ni/is : sagittal crest strongly developed, reaching 

 a height oi 28 mm. in old males and extending forward to the postorbital 

 processes, as in ZalopJins, and reaching as great a degree of development. 



Gvograf>liici}l I^i<.tributio)i. — The type localitv oi .Intoccplialus piiilip- 

 ///* is the Island of Juan Fernandez, off the Coast of Chili. In the mate- 

 rial .It present .u.iil.ible there is a single skull labelled as from the Straits 

 of Magell.m, .uul one from " r.itagonia." jirobabh- Far.ic.i H.iv ; all of the 

 other eight skulls .ire from the dalapagos Archipelago, two being from 

 Jarvis Island .md six from Hood Island. It would thus appear that 

 A rtocc filial I4S philippii ranges from the Straits of Magellan northward 

 along the west coast oi South America to the dalapagos Archipelago. 



