A species of true Pheasant, \vhich seems to have been indicated 

 by former writers from incomplete descripticjns or drawings, but 

 never to have been accurately characterized, was also exhibited 

 and named. 



Phasianus albo-cristatus. Mas. Phas. siipi-a ater, viridi 



nitore splendens ; dorso imo alho fasciuto ; crista plum'ts albis, 



elongatis, deorsim recumbentibus, basi subfuscls ; remigibus cor- 



poregue inferiori fuscis ; pectoris phtmis lanceolatis albescentibus . 



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



domine paUidiore ; gula, plumarumgue corporis apicibus et rka- 



chibus albescentibus ; rectricibus lateralibus atris, viediis brunneis 



alhescenti undulatis. 



A third species \vas likevvise added from the collection to the 



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



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



lowing are its characters : — 



Enicurus maculatus. En. capite, colio, dorso superiori, pec- 

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

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

 dorso imo, abdomine, rectricibus lateralibus, mediarumęue apici- 

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

 bescentibus. 

 Statura En. specioso seąualis. 



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 aninial, which is 

 minutely described and contrasted with that of the Chimpanzee. 

 'With the skeleton of the Pongo (Pongo JVurmbii, Desm.) the re- 

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

 sive examination \vhich Mr. Owen has made of entire sheletons of 

 both the Pongo and the Oraiuj, 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 po\verful museles 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 \vith the parietal bones ; a junction 

 which 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 gaili 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 tlie temporal bone, which is necessary to prevent 

 dislocation back\vards of the lo\ver ja\v, 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 

 crown8 of the latter are cis large as those of the Pongo. The os 



