2 ASHWORTH & HOYLE, Species of Ctenopteryx. 



Ctenopteryx cyprinoides, Joubin ('94, :oi). 



This species was based on three specimens taken 

 fronn the stomach of a dolphin, which was captured by the 

 Prince of Monaco's yacht " Princesse AHce," off the island 

 of Corsica. Pfeffer (:oo) has expressed the opinion that 

 these two names belong to one and the same species, 

 though without giving any reasons for his belief. Jatta 

 ('03), however, held the view that they were probably 

 distinct, judging only from the published descriptions. 



A short time ago one of us was fortunate enough to 

 procure a well-preserved specimen* from Messina, much 

 larger than that described by Appellof, and comparable 

 in size with the Monaco examples, as the following table 

 of dimensions will show: — 



Dimensions in Millimetres. 



Length, total 



Length, total, excluding tentacles ... 



End of body to mantle margin (dorsal) 



End of body to eye 



Breadth of body 



Breadth of head 



Eye to edge of umbrella (laterally)... 



Length of fin 



Breadth of fin 



Breadth across fins ... 



Length of first arm ... 

 Length of second arm 

 Length of third arm 

 Length of fourth arm 

 Length of tentacle ... 



* I would here express my thanks to the Carnegie Trust for the 

 Universities of Scotland for a grant which enaiiled me to purchase this 

 specimen. — J. H. A. 



t Measured at the opening of the mantle. 



