9 



A species of true Pheasant, which seems to have been indicated 

 by former writers from incomplete descriptions or drawings, but 

 never to have been accurately characterized, was also exhibited 

 and named. 



Phasianus albo-cristatus. Mas. Phas. supra ater, viridi 

 nitore splendens ; dorso imo albo fasciato ; crista plumis albis, 

 elongatis, deorsim recumbentibus, basi subfuscis ; remigibus cor- 

 poreque inferiori fuscis ; pectoris plumis lanceolatis albescentibus . 

 Fcem. Corpore supra cristdque breviori fuscescenti-brunneis ; ab- 

 domine pallidiore ; guld, plumarumque corporis apicibus et rha- 

 chibus albescentibus ; rectricibus lateralibus atris, mediis brunneis 

 albescenti undulatis. 

 A third species was likewise added from the collection to the 

 group of Enicurus of M. Temminck, which has hitherto been con- 

 sidered as limited in range to the Indian Archipelago. The fol- 

 lowing are its characters : — 



Enicusus maculatus. En. capite, collo, dorso superiori, pec- 

 tore, ptilis, remigibus secundariis, cauddque intense atris ; frontis 

 notd latd, maculis confertis nucha et sparsis dorsi, pteromatibus , 

 dorso imo, abdomine, rectricibus lateralibus, mediarumque apici- 

 bus albis ; remigibus primariis fuscis ; rostro nigro ; pedibus al- 

 bescentibus. 

 Statura En. specioso sequalis. 



Mr. Owen resumed the reading of his paper On the Anatomy 

 of the Orang Utan (Simia Satyrus, L.). This part of the com- 

 munication is devoted to the osteology of the animal, which is 

 minutely described and contrasted with that of the Chimpanzee. 

 With the skeleton of the Pongo {Pongo Wurmbii, Desm.) the re- 

 semblance is in many particulars almost complete ; and the exten- 

 sive examination which Mr. Owen has made of entire skeletons of 

 both the Pongo and the Orang, and of numerous crania of the 

 latter at various ages, has led him to adopt the opinion of those 

 who maintain that these constitute really but one species, of which 

 the Orang is the young, and the Pongo the adult. The remarkable 

 differences in the crest of the cranium, and in the facial angle, 

 appear to be the result of the action of the powerful muscles of 

 manducation, and of the development of the extremely large 

 laniarii. 



A marked peculiarity of the cranium of the Orang exists in 

 the junction of the sphenoid with the parietal bones ; a junction 

 w T hich is not found in the Chimpanzee, and has been asserted to 

 exist in man alone. Other peculiarities are met with, in the absence 

 of a crista galli on the ethmoid bone, and in the non-existence of 

 either mastoid or styloid processes : there is a process from the par- 

 ticular surface of the temporal bone, which is necessary to prevent 

 dislocation backwards of the lower jaw, the auditory process not 

 being adapted to prevent such an accident. The intermaxillary 

 bones are distinct. There are large foramina behind the deciduous 

 teeth, which lead to cavities containing the permanent ones ; the 

 crowns of the latter are as large as those of the Pongo. The os 



