753 



5006. The cranium, with the calvarium detached, of an adult male Semnopithecus 

 JEntellus. 



The cerebellar fossa of the petrosal is both large and deep. The entry to the rhinence- 

 phalic fossa is constricted by the approximation of its lateral margins, which almost touch 

 at the middle. The foramen ovale is between the petrosal and the alisphenoid. There are 

 both anterior and posterior clinoid plates, and processes likewise extend from the posterior 

 clinoid plate to join the petrosal. The lateral and posterior cranial parietes are very thin and 

 without diploe. The intervening angle is very thick and supplied with air-cells, which ex- 

 tend into the mastoid and squamosal. 



Purchased. 



5007. The cranium of an adult female Semnopithecus, showing the sexual inferiority 

 of size in the canines. 



This animal has suffered a severe fracture of the parietes of the left orbit. The alisphe- 



noid joins the parietal. 



Purchased. 



5008. The skull of a Semnopithecus, with the deciduous teeth. Purchased. 



Genus Cercopithecus. 



5009. The skeleton of a young Monkey, ascribed in the MS. Catalogue to the Cer- 

 copithecus ruder. 



The vertebral formula is: 7 cervical, 12 dorsal, 7 lumbar, 1 sacral, and 28 caudal. In 

 older individuals one or two of the anterior of the caudal vertebrae would doubtless coalesce 

 with the single vertebra which now articulates with the ilium. The metapophysis and an- 

 apophysis are separate and distinct in the eleventh dorsal to the antepenultimate lumbar, after 

 which the anapophysis disappears. The transverse process of the atlas is perforated lengthwise 

 and vertically ; that of the seventh cervical is imperforate. The alisphenoid joins the parietal 

 on the left side. The premaxillaries ascend high between the maxillaries and the nasals. 



This animal still retains the deciduous teeth, and would apparently have attained a larger 

 size than that of the adult Cercopithecus ruber. 



Mus. South. 



5010. The cranium of a male Cercopithecus sabau*, with a slight unsymmetrical dis- 

 tortion of the bones of the face. Presented by Henry Cline, Esq. 



5011. The skull of the White- throated Monkey (Cercopithecus albogularis). 



The deciduous teeth and the germ of the first permanent molar remain on the left side of 



the upper jaw. 



Hunterian. 



5 D 



