PLATE CLXIV. 



channel, or any other, nor have we received it from any of our friends, 

 at the same time that we have no reason to distrust the information 

 of that author, and only infer from the attention we have by chance 

 bestowed particularly to the marine productions of that sea, that it 

 must be rare. 



A specimen of this shell, one which we are inclined to think, on 

 pretty good authority, to be the same, or one of them at least, that 

 was sent by the late Mr. Ellis to the Dutchess of Portland, is at this 

 time in our Cabinet ; the late Dr. Fordyce became first possessed of 

 this specimen, and at his death we obtained it, under the title of 

 Lepas sigillatum of Solander. Unlike Lepas anatifera, or anserifera, • 

 the valves of this shell are uncommonly thin, brittle, in a certain 

 degree corneous, with the largest lateral valves rather crumpled in 

 the usual course of the striae, arid marked transversely with obsolete 

 rays : the shell is likewise covered with a fine pale brown skin, or 

 epidermis : is larger than anatifera, and has a singular acute promi- 

 nent dilation at the base of the back valve. 



