9 
rino ; nuchd, regione paroticd, juguloque albidis, jugulo et pectore 
viridi-glaucis ; abdomine et tibiis rufo-cervinis ; auchenio, dorso et 
alis cesio-umbrinis, rectricibus olivaceis ; caudd elongata, subrotun- 
datd, supra cinered, infra luteo-virenti, rostro et pedibus nigris ; 
iride albo-cinerascente. 
The most characteristic peculiarity in the present species, observes 
Dr. Riippell, consists in the absence of feathers on the face and 
throat, the skin of these parts presenting only small scattered hairs, 
and apparently being of a blackish purple colour. The feathers of the 
upper surface of the head are elongated, and have the plumelets soft 
and flowing ; they no doubt are erectile, and form a crest at the will 
of the bird. The two sexes agree perfectly, both in size and colour- 
ing. The dimensions in French measure are as follow :— 
in. lin. 
Total length from the tip of the beak to the tip of tail. 19 0 
SIRS Ne tai LS dG RCL a BER USC ADS A ccs ri 10 O 
Length of the beak, measuring along the upper curvature 1 1 
Greatest height of the two mandibles .............. 0 73 
Length of the wing from the bend to the extremity of 8 0 
the fourth wing-feather, which is the longest .. .. 
BREED RL IUNG CANBUS 015) cove dain \Sin iain wane gine or, oe I. 6 
Length of the middle toe, including the nail ........ 1 10 
CuIzzRHIS LEUCOGASTER. Chi. pileo crista plicatilis, plumis 
apice truncatis, capite, gutture, collo, cervice, dorso et alis cesio- 
umbrinis ; rectricibus medianis nigro-marginatis, remigibus dimidio 
basali albis, dimidio apicali umbrino-nigris ; caudd subrotundatd, 
supra et subtis nigrd, fascid albd latd transversd ; rectricibus 
duabus intermediis cesio-umbrinis ; abdomine et tibiis albis ; 
rostro et pedibus nigricantibus, iride umbrind. 
A peculiarity in this species consists in the truncated form of the 
feathers which constitute the crest. Both sexes agree in size and 
colouring. The dimensions are as follow :— 
in. lin 
Potal length ......... ahs eet a aes Cae of PO dete ar as seg 
Deeb tee ek Weta ciabies Mellen Sas ware tn stay ts 
ee De Le ee ans St Sa ee ye eke 0114 
Rieemt OL bili f:iiii's as esie dsl sdheitteia oe kts «ine were 0 64 
Length of the wing to the end of the fifth wing-feather 7 9° 
SUAS) ajzh A chayat cay Siare Rip aitis sete OWete & Sheu tach atee armas 1 8 
Middle toe, including the nail ..............00.... 110 
A series of twenty-five Orang Outan skulls, from Borneo, which 
had been presented by James Brooke, Esq., together with fourteen 
skeletons, were exhibited, and also a collection of Fishes from Brazil, 
presented by J. Frembly, Esq., R.N. 
