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and by the cervical nerve posteriorly. The spines of the cervical vertebrae are moderately 

 and more equably developed than in other mammals ; that of the dentata being little larger 

 than the rest. The pleurapophysial part of the transverse process of the eighth cervical is 

 more extended antero-posteriorly than in the preceding cervicals, in which respect it resembles 

 that of the sixth cervical vertebra in ordinary quadrupeds. The pleurapophysial part of the 

 transverse process of the ninth cervical is free, and is more extended in the direction of its 

 length, but is very short as compared with the homologous part of the following vertebra. 

 The slender neck and head of this little rib, joining the fore part of its centrum, occasions the 

 perforated character, as in the antecedent cervical vertebra. In the fourth cervical, how- 

 ever, the vertebral artery perforates the right transverse process, but only grooves the left one 

 on its anterior part. The transverse processes of the second and third cervical vertebrae are 

 both imperforate. A short metapophysis is developed from the fore part of the diapophysis 

 of the penultimate dorsal vertebra, increases in size in the last dorsal, and ascends upon the 

 base of the prozygapophysis of the third lumbar vertebra. The anapophysis is also developed 

 from the last dorsal and from the three lumbar vertebrae ; it is short, with an articular sur- 

 face applied to the outer side of the prozygapophysis of the succeeding vertebra. The 

 spinous processes gradually subside in the posterior dorsals and become obsolete in the lumbar 

 vertebrae. The first pair of ribs is anchylosed to the manubrium : nine pairs directly articu- 

 late with the sternum, which consists of eight bones ; these are compressed, and progressively 

 increase in depth ; the hinder ones are divided into a larger posterior and a smaller anterior 

 part, between which are four articular facets on each side for the bifurcated extremities of two 

 of the ossified cartilages. There is a pair of hypapophyses on the fifth, sixth and seventh 

 caudal vertebrae. 



The spine of the scapula is unusually short ; the acromion of moderate length, but simple 

 and unexpanded at its extremity ; the supraspinal fossa is the broadest, and has a large per- 

 foration answering to the supraspinal notch. There are small clavicular bones which do not 

 reach the sternum. The bones of the anterior extremity are remarkable for their slenderness 

 and length. The three digits are terminated by very long curved pointed claws, the whole 

 being adapted for firm grasping and climbing. The humerus is imperforate, the radius and 

 ulna distinct, with a wide interosseous space, and allowing free pronation and supination. 

 Six bones are preserved in the carpus, viz. a ' scapho-trapezium,' a 'lunare,' a ' cuneiforme,' 

 a ' pisiforme,' a bone representing trapezoides and magnum, and an unciforme. The three 

 metacarpals are firmly joined together at their base, and are anchylosed to the rudiments of 

 the first and fifth metacarpals, and with the proximal phalanges of the three fully developed 

 toes. The iliac bones are of unusual breadth compared with those of other quadrupeds, and 

 are anchylosed to the sacrum. The ischia and pubes are long and slender, and circumscribe 

 unusually large thyroid and ischial foramina, the latter being completed by the coalescence of 

 the tuberosities of the ischia with the transverse processes of the last two sacral vertebrae. 

 The head of the femur has no impression of a ligamentum teres. The patella is ossified : 

 there is a fabella behind the external condyle. The tibia and fibula are bent in opposite 

 directions, intercepting a very wide interosseous space. The anchylosis of their two extremi- 

 ties which has been found in older specimens has not taken place here. The inner malleolus 

 projects backwards and supports a grooved process. The outer malleolus projects down- 



