PROCEEDINGS 



OF THE 



GENERAL MEETINGS FOR SCIENTIFIC BUSINESS 



OF THE 



ZOOLOGICAL SOCIETY OF LONDON. 



PAPERS. 



12. Note on a Hermaphrodite Dogfish. 

 By Ruth C. Bamber, M.Sc* 



[Received August 8, 1917 : Read October 23, 1917.] 



(Plates I. & Il.f) 



Index. Page 

 ■ Variation 218 



A case of hermaphroditism in Scyllium canicula L. has recently 

 come under my notice whilst demonstrating in the Zoology 

 laboratories at the University of Liverpool, and, as the condition 

 is rare in Selachians, it may be of interest to record the details. 



In 1914, Vayssiere and QuintaretJ described a hermaphrodite 

 specimen of Scyllium stellare L. from the Gulf of Marseilles, but 

 it was quite unlike the one I have seen. Their specimen had the 

 left pelvic fin like that of a normal female, and the right like 

 that of a male, with the clasper well developed. Internally an 

 ovary and both oviducts were present. Also there was one 

 testis, the right, united with the posterior end of the ovary, and 

 the male ducts were normally developed on the right side only. 



* Communicated by C. Tate Regan, F.R.S., F.Z.S. 

 f For explanation of the Plates see p. 219. 



X A. Vayssiere et G. Quintaret, " Sur un cas d'hermaphrodisme d'un Scyllium 

 stellare L.," C. R. Ac. Sci. Paris, 158. pp. 2013-2014. 



Proc. Zool. Soc— 1917, No. XYI. 16 



