19 



butions, are described witli comments on their mutual relation- 

 ships. The author's views on the evolution of markings agree 

 with Eimer's well-known theory, but the original pattern is 

 carried back to a type more primitive than any postulated by 

 Eimer, in which a light vertebral streak is present. The lines 

 of evolution are held to be the i^everse of those advocated more 

 recently by Prof, von Mehely. 



This paper will be published in the 'Transactions.' 



Mr. BouLENGER also read a short paper containing an account 

 of some specimens of the Perciform Fish, Tilcqna nilotica, with 

 increased number of anal spines. 



Mr. Robert Gurney, M.A., F.Z.S., communicated a paper on 

 a collection of Freshwater Entomostraca made by Mr. G. W. 

 Smith in Ceylon in 1907. The collection contained examples of 

 35 species, and one species of Copepoda and two of Ostracoda 

 were described as new, one of the latter belonging to the typically 

 African genus Oncocypris. 



A paper was received from Major R. Meinertzhagen, F.Z.S., 

 on the Sitatnngas (Limnotragus) of the Sesse Islands. The 

 author found that the Bugalla Island antelopes of this genus 

 seem to be of the same race as the mainland form, Limnotragus 

 spekei, but that the Nkose Island form, which he proposed as a 

 new sidospecies, differed in the shortness of its hoofs and other 

 characters. 



The next Meeting of the Society for Scientific Business will be 

 held on Tuesday, April ISth, 1916, at half-past Five o'clock p.m., 

 when the following communications will be made : — 



Exhibitions and Notices. 



R. I. PococK, F.R.S., F.L.S., F.Z>S. 



On the External Characters of the Mongooses (Mungotidse). 



Major H. Motr Evans, M.D., R.A.M.C. 



The Poison-Oi'gan of the Sting- Ray [Trygon pastinaca). 



