HISTORY OF THE SOCIETY. 483 



rally speaking, no two species with plumage, &c. the same, but 

 with different shapes of head, agreed in their habits and man- 

 ners, nor were they ever found to breed with each other. Pro- 

 fessor Jameson also exhibited a specimen of the female of the 

 Cypselus longipennis, which he had received from Northern 

 India, and stated that it only differed from the male figured by 

 Temrainck and Swainson, in wanting the brownish-red patches 

 on the side of the neck ; in other characters it is identical. 



Dr Charles Anderson, formerly Vice-President, in the chair. 1835. 



April 4. 

 — There was read a communication from Mr R. H. Parnell re- 

 garding some new and rare fishes which he had procured from 

 the Frith of Forth. In addition to the ample list of fishes 

 found in the Forth, given by Dr Neill, and published in the 

 Transactions of the Society, the author has detected nine others, 

 two of which are new to science ; one he referred to the ge- 

 nus Solea, the other to that of Platessa. — Professor Jameson 

 exhibited and described a series of quadrupeds and birds. 

 Among the more interesting of the quadrupeds were the Hylo- 

 bates lar, leuciscus, albimanus, and hoolock ; the latter of which, 

 however, he stated, was probably not a true species, but the fe- 

 male of the Ounko of Frederick Cuvier. Among the birds, two 

 were described as new to science, viz. Aquila nigra, and male 

 of Lophophorus Nigelli. 



Acjuila nigra — Bill yellowish-brown, length 2 inches ; length 

 of gap 2^ inches ; cutting edge of upper mandible furnished 

 with a protuberance. Nostrils ovoid. Face between the eyes 

 covered with stiff hairs, which radiate as it were from a centre. 

 Body, tail, and legs of a reddish-brown colour, with the excep- 

 tion of the middle of the back and rump, which are greyish- 

 white ; length of body from tip of bill to tip of tail, 3 feet ; 

 from the tip of one wing to the tip of the other, 5 feet 7 inches ; 

 wings about 3 inches shorter than the tail. Tail square, but 

 rather rounded, consisting of twelve feathers, the four centre 



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