SHELLS. 261 



The shell suborbicular, whitish, smooth, with distant radiating 

 ridges near the edge ; internally dark green ; the notch in the 

 lower valve large, ovate, triangular ; the plug thin, shelly, near the 

 apex, and formed of parallel horny lamellae for the greater part 

 of its length. 



The animal has the power of absorbing the surface of the 

 shell to which it is attached before it enlarges the size of the plug. 

 The plug is evidently only a modification of the kind of laminal 

 beard formed by the end of the foot of the arcs, for, like it, it is 

 formed of numerous parallel, erect, longitudinal, horny laminae, 

 placed side by side, extending from the apex to the margin, and it 

 is on these plates that the calcareous matter is deposited when the 

 attachment assumes its shelly substance. The same structure is 

 to be observed in the plugs of the European Anomia Ephippium. 



" The specimen was taken up with the dredges affixed to a piece 

 of Mytilus. While alive the animal kept opening and shutting its 

 upper valves, with a snap just like the Pectens. Rare." BidwelL 



Fam. TEREBRATULID.E. 



213. Terebratula recurva. Quoy et Gaim. Voy. Astrol. 

 iii. 554, t. 85, f. 10, 11. 



214. Terebratula sanguinea. Leach. Zool. Miscel. 76, 

 t. 33. Lam, vi. 247. Quoy et Gaim. Voy. Astrol. 

 iii. 556, t. 85, f. 6, 7. T. Zelandica, Desk. Mag. 

 Zool. 1841, t. 42. Anomia sanguinea. Solanders 

 MS. Calonne, Cat. 45; not Chemn. A cruenta. 

 Dittwyn, R. S., 295. 



Inhab. New Zealand. Humphreys. Tasman's Bay. 

 Quoy. Turanga, East Coast of N. Island. Dieffen- 

 bach. 



215. Terebratula lenticular is. Desk. Mag. Zool., 1841, 

 t. 41. 



Inhab. New Zealand. Desh. 

 Perhaps only a smaller variety of the former. 

 Fam. OCTOPODID^E. 



216. Octopus cordiformis. Quoy et Gaim. Voy. Astrol. 

 ii. 87, t. 6, f. 3. 



Inhab. Ne\v Zealand, Bay of Tasman. Quoy. 

 Fam. SEPIAD^E. 



217. The Sepia, or Cuttlefish, forms an article of native 

 food. Polack, i. 326. 



