RABBIT. 39> 



There are four sacral vertebrae, only the first uniting with, the ilia. 



The tubercles of the second, third, fourth, fifth, sixth, seventh,, 

 and eighth ribs are produced into spinous processes, which afford, 

 attachment to the tendons of the longissimus dorsi muscle. 



The sternum consists of five segments or sternubrse, with a long 

 xiphisternum. The long narrow manubrium is keeled inferiorly. 



FOBE LIMB. 



The acromium of the long narrow scapula sends a process back- 

 wards over the infra-spiDous fossa, which gives attachment to a 

 portion of the trapezius muscle. The clavicle is slender, buried, 

 in the pectoral muscles, and is incomplete at both ends. In the< 

 humerus there is supra-condyloid foramen. The radius and ulna 

 are entire and in close contact, and. by reason of their hinge-joint 

 with the humerus, the movements Of the fore-arm are restricted to 

 that of pronation. There is a ninth, bone in the carpus — the os- 

 intermedium. There are five digits, the innermost being very short* 

 They are all ungulate, and provided with claws. 



HIND LIMB. 



The ilia are long and subprismatic where they articulate with 

 the first sacral — the joint being limited to this vertebra. They 

 extend in advance of this on each side the last lumber, expanding 

 into a crest, which is rough and slightly turned outwards. The. 

 pubic bones are long and slender, and meet in the middle line in 

 a long symphysis pubis, which is prolonged into a ridge inferiorly. 

 The femur has a small third trochanter near the base of the 

 great one. The tiba and fibula are anchylosed, and the patella 

 is ossified. There are only two cuneiform bones in the tarsus, the: 

 internal one being absent. The navicular has a large process. 

 There is no inner digit, and the inner side of the base of the 

 second metatarsal is extended backwards to articulate with the 

 navicular : this may represent an internal cuneiform. 



SKULL. 



■^ x i -ci n f • 2—2 0—0 3—3 3—3 no 



Dental Formula -j i j— y c g— ^ p. M. ^— - m 3^3=28 



There are no canines. The lower and anterior upper incisors 

 are very long. They are coated with enamel only in front, and 

 they grow continuously from persistent pulps. By attrition they 

 acquire a chisel-shaped edge. 



The second pair of incisors in the upper jaw are very small, and 

 are placed behind the first pair. The incisors above and below 

 are separated from the first premolars by. a long diastema. 



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