new Species of Dendrohyrax. 135 



3. Dendrohyrax BlainviUei,Gv&y , Hand-list, pi. xi. fig. 3. 



Infraorbital foramen small, under the front edge of the orbit ; 

 orbit oblong, longer than high. 



II. The intermaxillaries triangular, produced and acute behind 



above. 



4. Dendrohyrax Bakert. 



Interorbital foramen large, in front of the front edge of the 

 orbit ; orbit longer than high. 



I. The lower jaw deep, becoming much broader behind, with an 



arched lower edge, being most convex under the condyle, and 

 with a long rounded hinder edge. The orbit complete. Dendro- 

 hyrax. 



1. Dendrohyrax arboreus, Gray, Hand-list, pi. xiii. fig. 2. , 



South Africa. 



Blainville, in his 'Osteographie,' figures a skull under the 

 name of Hyrax arboreus (plate ii.) ; but it is from an imperfect 

 skull. It may represent a specimen of this species ; but if it 

 does, the proposed restoration of the lower jaw gives a very 

 erroneous idea of the proper form of the jaw. 



II. The loiver jaw moderately broad, with a straight lower edge, 



having the hinder end rounded and expanded backivards. 



2. Dendrohyrax dorsalis, Gray, Hand-list, pi. xiii. fig. 1. 



Orbit complete behind ; lower jaw very long. 

 Western tropical Africa. 



3. Dendrohyrax Bakert. 



Orbit incomplete behind ; intermaxillary bone triangular, 

 acute behind. 



North-eastern tropical Africa. 



The skull of Dendrohyrax Bakeri has a good deal of re- 

 semblance to the skull of Euhyrax Bocagei from Angola 

 (no. 1515 a), l Hand-list,' pi. xi. fig. 2, which I have referred to 

 the genus Euhyrax ; but unfortunately the occipital bone is 

 broken away. However, the comparison of the animals shows 

 that, should this species prove to be a Dendrohyrax^ which I 

 do not think is likely (as it has a triangular interparietal bone), 

 it is a species quite distinct from any of the other specimens 

 of that genus in the British Museum, as the fur of the upper 



