California. The locality " Golfe de Georgie" (Paris Museum, Gru- 

 vel) also quoted by Kriiger, evidently means the Gulf, or more prop- 

 erty Strait of Georgia, east of Vancouver Island, British Columbia, 

 where Dr. A. Agassiz collected many years ago. On the west, it ex- 

 tends as far south as Hakodate in southern Yesso (Hokkaido), and 

 probably farther south, as it was taken by Mr. IT. Loomis, whose 

 material is chiefly from Jedo Bay, in middle Japan. The record 

 Cochin China, in the Paris Museum, can hardly be accepted without 

 confirmation. It seems most improbable. 



KESPERIBALANUS, new subgenus. 



Balani with poreless walls and basis, the radii with thick, septate 

 edges; opercular valves as in the Balanus crenatus group. Mandible 

 with the fourth and fifth teeth short and broad, lower edge shortly 

 hairy. Maxilla with few spines. 



Type. B. hesperius. 



