£20 Zoological Society, 



mission of the blood-vessels of the bones are small. The periosteum 

 is thick and fibrous. 



w The cranium is short and broad, and is united into a single bone, 

 with very little appearance of suture or harmony : superiorly it is 

 flattened ; posteriorly, towards the occiput, it is rounded ; it declines 

 obliquely forwards ; and when it attains the front of the orbits it is 

 suddenly truncated to meet the superior mandible. 



" The orbits are large, and separated only by membrane. Above 

 each orbit there is a fossa, which is deeper and broader behind than 

 in front, and which ends suddenly at its union with the orbitar pro- 

 cess of the temporal bone. External and inferior to the termination 

 of the transverse ridge of the occipital bone there is a process. The 

 temporal bone has two processes : the tympanic, situated imme- 

 diately anterior to the last-named process ; and the orbitar, situated 

 immediately behind the posterior part of the orbit. The basilar pro- 

 cess of the occipital bone is short, ending posteriorly in a single 

 round, prominent condyle, which articulates with the atlas. The 

 body of the sphenoid is lengthened, and its pterygoid processes 

 form separate bones. The tympanic bones have the internal pro- 

 cess much produced. The jugum is very long and thin, attached as 

 usual to the tympanic and superior maxillary bones. The palatine 

 bones are long and thin, meeting posteriorly the pterygoid, and an- 

 teriorly the superior maxillary bones. 



"The upper jaw is immoveable: the superior mandible long, 

 slender, and a little arched at the point. The apertures for the 

 nostrils are long and narrow. The bones of the superior mandible 

 are of the usual form. The superciliary bones are wanting. The 

 lachrymal bones are small, and fixed to the cranium. The turbi- 

 nated lamina are small, soft, and cartilaginous. 



" The lower jaw is long and slender, and composed of three 

 pieces, viz., the body of the bone and its two articulating portions. 

 The coronoid processes are very small. The condyloid process is 

 -not elevated above the body of the bone. There is a process pro- 

 duced posteriorly for the attachment of the pterygoid muscles. 



" The os hyoides has the lateral cornua much lengthened; passing 

 upwards posteriorly to the occipital bone, then curved forwards for 

 a short distance upon the temporal bone. 



"The vertebral column consists of 



Cervical vertebra 13 



Dorsal 9 



Sacral 12 



Caudal 8 



In all 42 

 " The atlas is of the usual shape. The processus dentatus of the 

 second vertebra is flattened laterally ; the posterior spinous process 

 short, and the anterior long. The articulating processes are infe- 

 riorly produced, as are those of all the cervical vertebrce : in the 

 lower of them the processes diverge less than in the upper ones. 

 -The posterior spinous process of the third, fourth, fifth, sixth, and 



