48 NATURAL HISTORY OF KERGUELEN ISLAND. 



Mttilus CANALICULUS, Hanley. 



Mytilus latus, auct. non. Lam. 



Mytilus ungulatus, Rve. Conch. Ic. ii, 4. 



Mus. No. 11910. 



Oliili, Eeeve ; New Zealand, Hanley ; Kerguelen Island, Dr. Kidder, 

 living; abundant. The shell of this species closely resembles some varie- 

 ties of Mytilus edulis, but the soft parts are quite different. The foot is 

 large and quite flat beneath. The viscera and branchiae are white j the 

 foot and mantle edge streaked with dark brown. 



The following species, not obtained by Dr. Kidder, but described as 

 new, by Mr. Smith, in the paper referred to; and other previously-de- 

 scribed species, which are not enumerated in the paper in the Annals, 

 were found by the Eev. A. E. Eaton, of the English party at Ker- 

 guelen. 



Struthiolaria mirabilis, Smith. 

 Buccino;psis (?) eatoni, Smith. 

 Troplwn albolahratus, Smith. 

 Littorina setosa, Smith. 

 Rissoa Kergueleni, Smith. 

 JEatoniella subrufescens, Smith, sp. 

 SJcenea subcanaliculata, Smith. 

 Scissurella suprapUcata, Smith. 

 Solenella gigantea, Smith. 

 Yoldia subcequilateralis, Smith. 



[In addition to the foregoing, the collection contains individuals of an 

 undetermined Boris, found in tide-pools, at low- water. — J. H. K.] 



MOLLUSCOIDA. 



The class Tunicata is numerously represented, both solitary and 

 compound ascidians- being abundant upon rocky beaches and attached 

 to the great masses of kelp (Macrocystis) which fringe the shores of 

 the island. A large solitary ascidian, of dark mahogany color, with 

 tough, leathery envelope, was especially common just below low-water 

 mark. Specimens were found as long as 5 inches. 



Flustra and numerous other forms of PoLYZOA grow luxuriantly 

 upon the stems and leaves of sea-weed, presenting often remarkably 



