PLATE 13. 



Illustrative of Propessoe Macalister's Paper "On the Crantax 

 Osteology oe Sloths." 



Vide Proceedings E. I. Acad., Vol. 2, Ser. 2, p. 139. 



Fi£ 



Tn 



Fii 



1 . Bradypus gularis, Skull, nat. size. 



a 



Parietal. 



h 



Supra-occipital. 



c 



Squamosal. 



d 



Exoccipital. 



e 



Condyle. 



2. Ditto, 



f nat. size. 



a 



Lach.rymal bone. 



I 



IS'asal bone. 



c 



Frontal bone. 



d 



Parietal. 



e 



Squamosal. 



f 



Supra-occipital. 



9 



Occipital crest. 



h 



Exoccipital bone. 



i 



Condyloid foramen. 



J 



Bulla tympani. 



k 



Pterygoid. 



I 



Foramen ovale. 



m 



Zygomatic process of squamosal. 



n 



Jugal bone. 







Maxilla. 



P 



Premaxilla. 



3, -f- Fontanelle tones, nat size. 



a 



"Wormian bones. 



h 



Left parietal bone. 



c 



Right parietal bone. 



d & e WoiTQian bones. 



. / 



Supra-occipital left. 



9 



Meso-occipital suture. 



h 



Supra-occipital right. 



4. Fronto-laclirynial region x 4. 



a 



Jugal. 



h 



Lachiymal. 



c 



Frontal. 



d 



Maxilla, 



e 



Lachrymal foramen. 



f 



Infra-orbital foramen. 



5. X 12, Stapes. 



