No. 57. 



ABSTRACT OF THE PROCEEDINGS 



OP THE 



ZOOLOGICAL SOCIETY OF LONDON.* 



April 28tli, 1908. 



Dr. Henr\ Woodward, F.R.S., Yice- President, 

 in the Chair. 



The Secretary read a Report on the additions that had been 

 made to the Society's Menagerie during the month of March 

 1908. 



Mr. C. Tate Regan, M.A., F.Z.S., exhibited a specimen of an 

 Australian Cat-fish {^Cnidoglanis megafttoma Richards.), and pointed 

 out that the so-called second dorsal fin was in reality a procurrent 

 portion of the caudal, differing from the dorsal and anal fins in 

 the absence of basal supports. 



Mr. Henry Scherren, F.Z.S., exhibited on behalf of Mr. Walter 

 Burton, P.Z.S., and briefly described some melanistic and black 

 Leopard-skins from Abyssinia. 



Prof. DArcy W. Thompson, F.Z.S., gave an explanation, illus- 

 trated by models, of his suggestion that the shapes of eggs were 

 due to physical causes, being determined by the peristaltic pressure 

 of the oviduct on liquid bodies contained in flexible membranes. 



Mr. C. Tate Regan, M.A., F.Z.S., read a paper entitled " A 

 Revision of the Sharks of the Family Orectolobidce." Twenty-one 

 species were described and were referred to eight genera. Atten- 

 tion was called to the gi'eat differences in form, coloration, &c. 

 among the membei'S of the family, coiTesponding to differences in 

 habits and environment. 



* 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 

 Shillings per annum, p^yuble in advance. 



