No. 30 . 



ABSTRACT OF THE PROCEEDINGS 



OF THE 



ZOOLOGICAL SOCIETY OF LONDON.* 



April 10th, 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, Trachysai(,rus rugosus, 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 Regan, 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 Freshwater 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 account 

 of the collection of Alcyonarians made by Mr, Cyril Crossland at 

 Zanzibar in 1901-02. Specimens of sixty-fiv^e 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 eharge, 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-frcefor tlie sum of Six 

 Shillings per annum, payable in advance. 



