ROSSI A. 221 



have seen only two such specimens, one taken by Mr. 

 Ahler at Torbay, and a second in the collection of the late 

 Mr. William Thompson, from Dundrum, county Down, 

 in Ireland. 



M. Boucliard-Chantereaux has observed respecting ^^- 

 piolct', that they are most common in the English Channel 

 on sandy coasts, and in time of hot weather. He says 

 that they spawn towards the end of May and commence- 

 ment of June, laying their spawn in the form of little 

 bluish gelatinous masses in the centre of which the eggs 

 are arranged, as if around an axis. Each mass contains 

 from forty to a hundred and thirty eggs. Each female 

 produces from fifteen to thirty- six of these, which are united 

 at their bases by an amorphous gelatinous pedicle attached 

 to submarine bodies. In from twenty-two to twenty-five 

 days the young ones come out from the egg. 



ROSSIA. Owen. 



Body oval or rounded, short, truncated in front, rounded 

 behind, not connected inferiorly with the head by a liga- 

 ment, but quite free, furnished on each side by a sub- 

 orbicular fin ; locomotive apparatus formed of oblong crests, 

 on the inner margin of the sleeve, and of margined 

 sockets at the base of the funnel. Head large, eyes covered 

 by an epidermic expansion, pierced by a very small hole. 

 Arms ten, two of them tentacular and retractile. Pen 

 corneous, flexible, small and sub-spatulate. 



This genus was instituted by Professor Owen for a 

 cuttle-fish, closely resembling a Sejnola, found in the 

 Arctic Seas by Sir John Eoss. There appear to be five 

 described species, of which two are British, first made 

 known by Dr. Robert Ball. 



