No. 156. 



ABSTRACT OF THE PROCEEDINGS 



OF THE 



ZOOLOGICAL SOCIETY OF LONDON.' 



April 18th, 1916. 



Dr. S. F. Harmer, M.A., F.R.S., Yice-President, 

 in the Chair. 



The Minutes of the last Scientific Meeting were confirmed. 



The Secretary read a Report on the Additions to the Society's 

 Menagerie during the month of March 1916. 



The Secretary read a letter he had received from Lt.-Col. 

 R. T. Leiper, D.Sc, F.Z.S., R-A.M.C, on the subject of his 

 recent investigations in reference to Bilharziosis, the life-history 

 of the parasite and prophylactic measures. 



Mr. C. Tate Regan, M.A., F.Z.S., gave an exhibition of 

 lantern-slides illustrating how certain fishes protect their egijs 

 by carrying them about, either in the mouth (Arins, some 

 (Jichlidte), on the occiput [Kurtits), on the abdomen (Aspredo), 

 or in a special brood-pouch (Syngnathidse). 



Major H. M, Evans, M.D., R.A.M.C., read a paper "On tiie 

 Poison Organ of the Sting-Ray {Trygon pastinaca)." 



It has been observed for centuries that the wounds produced 

 by the serrated spine growing from the base of the whip-like tail . 

 of the Sting-Ray produced very severe injuries and pain and 



* This Abstract is published by the Society at its ofEces, Zoological Garclcns, 

 Regent's Park, N.W., on tlie Tuesday following the date of Meeting to which 

 it refers. It will be issued, along with the ' Proceedings,' free of extra charge, 

 to all Fellows who subscribe to the Publications ; but it may be obtained on tlie 

 day of publication at the price of Sixjjence, or, if desired, sent post-free for 

 the sum of Six Shillinffs per annum, payable in advance, 



