Mollushs, 7213 



sand. Odostomia ornata is a MS. name given by Mr. Bean to a variety 

 of O. spiralis, in which the spiral line at the base is obsolete. It is 

 taken among Lamlash Bay shell-sand. 



O. decussata. Frequent among the comminuted nullipore of" Lands- 

 borough's Bay," which I have so frequently spoken of in this paper as 

 " shell-sand." A very large portion of the " sand" consists of minute 

 shells and the broken fragments of their larger brethren. Odostomia 

 decussata is now and then found alive, but is far more frequent in a 

 dead and worn stale. 



O. excavata {Rissoa Harveyl, Thompson, Parthenia turrita). Dead 

 specimens rare among Lamlash Bay shell-sand. I have never met 

 with it alive. 



Eulimella Scillae. Said by Forbes and Hanley to occur " through- 

 out the Clyde district." I have procured it from ofFTarbert on Loch 

 Fyne, but have not met with it in the Firth of Clyde. 



Truncatella Montagui {Turbo suhtruncatus). Turbo subtruncatus 

 is reported by Mr. Smith to have occurred at Ayr. It is hardly likely 

 to be met with alive so far north. The specimens were probably from 

 ballast. 



Otina Otis. I found a specimen of this shell among washed weed 

 from Clachland Point, Arran. This is, I believe, the most northern 

 locality in which this species has been found. Professor Forbes met 

 with it in the Isle of Man. Dr. Gray has removed the genus Otina, 

 apparently on good grounds, from its position here, and has associated 

 it with the Auriculadae. 



Alfred Merle Norman. 



Sedgefield, Ferry Hill, 

 September 4, 1860. 



(To be coutiuued). 



On the Habits of the Argonaut. — Any original observations on tbe habits of so 

 interesting a mollusk as the argonaut should be welcome to the zooloj^ist. Such I 

 consider are those made by my friend, Mr. Thomas Kerr, of New Zealand. On the 

 occasion of his making a voyage across the North Pacific, one hundred and fifty miles 

 north of the great bay on the north side of New Guinea, he took a living argonaut in 

 the towing-net. The rest he shall tell himself: " I j)ut it," says he, " into a tumbler 

 of water to observe its motions at leisure, but, to my surprise, it was instantly out of 

 the shell and darting with great rapidity round and round the glass in ihe usual cuttle- 

 like manner — stern first ; it finally rested on the side of the tumbler, emitting a current 

 of water from its swimming tube, and sinking to the bottom was soon dead. I several 

 times placed it in the shell, but it never remained. While swimming it assumed a 



