-Vw 



-09li 



Royal Institution, 61 



«ide with tlie fawn-colour. The sides of the head and under-plumage 

 are uniform, except on the sides of the breast and across the neck, 

 where there are small black triangular spots in the centre of sonVe 

 of the feathers'. The under wing-coverts are pure pale buff; the 

 middle of the belly and crissum lighter and nearly whitish. 



'^" 4. Otocorys peregrin a. 



ptocoris chrysolaimos, Bp. Att. Sc. It. 1845, p. 40!5 (nee Wagl.). 

 O. sujn'a grisescenti-hriinnea^i'vfo tincta; pennis nigrovaricgatis: 

 fronte, facie gidaque JIavis, loris et regione auriculari et vitta 

 , . transversa verticis cum plaga magna superpectorali nigris : ab- 

 * ^ domine crissoque et tectricibus alarum inferioribus albis, pectore 

 **' „, et lateribus rufescenti-griseo mixtis : alis nigricantibus ; pri- 

 ^^ mariis albido, secundariis rufescenti-griseo, tectricibus majori- 

 bus rufo limbatis ; tectricibus summis pure rufo-brunneis, pcene 

 castaneis : Cauda nigricante ; rectrice una utrinque extima late, 

 secunda autem versus apicem solum et angustius albo limbata ; 

 duabus mediis rufescenti-griseo utrinque late marginatis : tec- 

 tricibus caudcE superioribus bast rufis : rostro nigro, mandibula 

 r-^S)': inferiore basi alba : pedibus intense brunneis. > 



,'r;fli0ng. tota 5 '5, alaj 3*8, caudee 2 A. 



I have had an example of this bird in my possession several years, 

 but have always considered it the same as Wagler's O. chrysolcema^ 

 with which it has been identified by Prince Charles Bonaparte. 

 Having however lately obtained specimens of the Mexican species, I 

 find the Bogota bird presents such differences as to render its specific 

 isolation necessary. It is rather smaller than the former, the tai i s 

 shorter, the bill longer and more curved, and the back has more 

 black upon it. But the chief peculiarity to be remarked in my 

 specimen (which is not quite adult) is the pure red-brown colour of 

 the upper wing-coverts, which in the Mexican bird are lighter, paler, 

 and more pinky. There are many examples of this species in the 

 Paris Museum, in the collection recently transmitted from Bogota by 

 M. Lewy, the French consul there. I have no doubt fully mature 

 individuals will exhibit still further differences. 



ROYAL INSTITUTION OF GREAT BRITAIN. 



';; May 2, 1856. -The Duke of Northumberland, K.G., F.R.S., 

 President, in the Chair. 



" On the Ruminant Quadrupeds and the Aboriginal Cattle of 

 Britain." By Prof. Owen, F.R.S. 



The speaker introduced the subject of the Ruminant order of 

 quadrupeds, and the source of our domesticated species, by some 

 general remarks upon the classification of the class Mammalia, and 

 on the characters of the great natural group defined by Ray and 

 Linnaeus as the Vngulata, or hoofed mammalia. 



These are divisible into two natural and parallel orders, having 

 respectively the Anoplotheriurn and PalcBotkerium as their types ; 

 which genera, as far as geological researches have yet extended, 

 were the first, or amongst the earliest, representatives of the Vn^^^ 

 lata on this planet. ,.^, 



