No. 30 . 



ABSTRACT OF THE PROCEEDINGS 



OF THE 



ZOOLOGICAL SOCIETY OF LONDON* 



April lOth, 1906. 



Herbert Druce, Esq., F.L.S., Vice-President, in the Chair. 



Mr. F. E. Beddard, F.R.S., exhibited a partially dissected 

 specimen of the Scincoid Lizard, Trachysaurus riogosus, to show 

 the existence in that species of abdominal ribs. 



Mr. R. I. PocoCK, F.Z.S., exhibited the skull of a Horse 

 showing pre-orbital pits. 



Mr. C. Tate P^egan, B.A., F.Z.S., read a paper dealing with 

 the Freshwater Fishes of the Island of Trinidad, chiefly based on a 

 collection made by Mr. Lechmere Guppy, Jun., and presented by 

 him to the British Museum. The collection was accompanied by 

 natural history notes and by a series of beautifully executed 

 water-colour drawings. Forty species of Freshwa,ter Fishes were 

 now known from the island ; these were enumerated in the paper 

 and four of them described as new to science. 



The Secretary read a communication from Prof. J. Arthur 

 Thomson and Mr. "W. D. Henderson, which contained an accoimt 

 of the collection of Alcyonarians made by Mr. Cyril Cross! and at 

 Zanzibar in 1901-02. Specimens of sixty-five species or varieties 

 were contained in the collection, of which twenty-seven were 

 described as new. 



A paper from Dr. J. F. Gemmill treated of Cyclopia in Osseous 

 Fishes, as observed by him in several advanced Trout embryos. 

 A detailed account of the anatomy of the specimens was given and 

 a comparison made with Cyclopia in Mammals. The^ author's 

 views were also put forward regarding the mode of origin of this 

 condition in Fishes. 



* This Abstract is published by the Society at 3 Hanover Square, London, 

 W., on the Tuesday following the date of Meeting to which it refers. _ It will 

 be issued, free of extra charge, to all Fellows who subscribe to the Publications, 

 along with the ' Proceedings' ; but it may be obtained on the day of publication 

 at the price of Sixpence, or, if desired, sent post-free for the sum of Six 

 ShiUingsi per annum, payable in advance. 



