14^ Mr. A. Adams on some Molluscous Animals 



sharp prominent keel^ articulated with white and dark green. 

 This angular ridge separates the hollow sides from the flat lower 

 portion^ which is of a dull pinkish white. The sole, or small 

 anterior membranous poi'tion situated in front of the head, is of 

 a pale white, and the broad circular expanded disk is marbled 

 with olivaceous, the edges being prettily spotted with dark 

 green and white. 



A favourite attitude is one in which the position of the animal 

 in its tubular shell is reversed, and the disk of the foot applied 

 against the upper edge, the concave sides forming two hollow 

 channels to conduct the water to the gills, thus performing the 

 office of siphons. This beautiful creature is common along the 

 shores of Manchuria and Japan, where it adheres to the tidal 

 rocks. My examples were obtained from 7 fathoms^ water at 

 Mososeki, in the Inland Sea or Seto-Uchi. The same species 

 has recently been described by Dr. Dunker, in his ' MoUusca 

 Japonica,^ as Serpulo7'bis imbricatus. 



Pilidium commodum, Midd. 



In a sandy bay of Saghaleen, near Cape Notoro, great masses 

 of Laminaria were thrown up in heaps on the beach after a tre- 

 mendous gale ; and it was during an examination of the rich 

 stores of shipwrecked and stranded animal remains that I found 

 several specimens of what I believed to be an undescribed shell. 

 Being at the time unacquainted with MiddendorfF^s Pilidium 

 commodum, I named my shell Capulus depressus, under which 

 name it is published in the ' Annals ' for 1860. 



According to Middendorff^s description, the animal does not 

 differ from that of Capulus ; but perhaps the extremely depressed 

 form of the shell may allow Pilidium to remain as a subgenus 

 of Capulus. In the ' Spitzbergen Mollusca ' of Otto Torrell 

 (p. 88) it is stated that Prof. Loven has named this shell Piliscus 

 prohus, altering the name Pilidium, because Prof. E. Porbes had 

 used it for lothia ; though why he should have altered the spe- 

 cific name also is not stated. Pilidium of Forbes, however, or 

 lothia is the same as Lepeta of Gray ; so that Pilidium of Mid- 

 dendorff should still be employed for this northern Capulus. 

 Hisinger, according to Torrell, described the same shell in his 

 ' Lethaea Suecica ' as Capulus Hungaricus ; and Torrell himself 

 proposes to call it Piliscus commodus. 



Eburna japonica, Reeve. 

 In this species the tentacles are ringed with red-brown, and 

 speckled with light yellow ; and the siphon is spotted with yel- 

 lowish white, and irregularly banded with red-brown lines. The 

 foot (long, large, thick, and fleshy, like that of Buccinum) is 



