74 Miscellaneous, 



specimens may now be seen in the tanks of the Zoological Society 

 in the Regent's Park. 



It is a very interesting coincidence, that the remarkable Annelide 

 found by Mr. Forbes in the same circumstances and described in the 

 same communication is also at present in the same noble collection ; 

 for, though I have had no opportunity of closely examining the spe- 

 cimen, I have no doubt that the curious Serpula which spontaneously 

 appeared some months ago in one of the central tanks, and which 

 has been looked upon with some interest by zoologists, is identical 

 with Forbes's Grecian iVnnelide in question. Its most salient point is 

 the long but graduated pectination of the branchial filaments on their 

 interior face, the pectinations projecting into the infundibulum and 

 meeting in the centre. It will probably require to be characterized 

 afresh, and to form a new genus. — P. H. Gosse. 



CYCLAS LACUSTRIS, DRAPARNAUD. 



In Forbes and Hanley's admirable * History of the British Mol- 

 lusca' (vol. ii. pp. 118 & 1 19) is a particular and accurate descrip- 

 tion of specimens in my collection which I obtained from Mr. Clark, 

 marked "Exmouth 1831 and Dr. Turton's cabinet.'* They were 

 referred by those authors to the above-named species. Dr. Gray 

 could not have been aware of this when he described the same species 

 in the last Number of the * Annals,' and assigned to it the name of 

 *' Sph(jerium pallidum'' Specimens which I took last month in 

 company with Mr. Rouse exactly agree with those in my collection 

 mentioned above, as well as with the description and figure in Dra- 

 parnaud's work. Cyclas caliculata (to some of the varieties of which 

 this approaches in form), C. rivicola^ and a variety of C. cornea 

 occurred in the same spot ; so that the species in question cannot be a 

 local variety of any of the others. Its distinctive characters are the 

 rhomboid form and nearly straight hinge-line ; yellowish-white being 

 the predominant colour, with a greyish tinge and darker irregular 

 zones in adult specimens. It is probably the Tellina lacustris of 

 Miiller ; but PfeifFer, Charpentier, Dupuy and some other conti- 

 nental writers, appear to have mistaken for it varieties of Cyclas 

 cornea and C. caliculata. Mr. Rouse having afterwards told me 

 that Dr. Gray intended to pubhsh the discovery, I communicated to 

 the latter my ideas on the subject, but I presume not in time for him 

 to make any use of them. — J. Gwyn Jeffreys. 



1 Montagu Square, 16th June 1856. 



Occurrence q/'Clausilia Mortilleti, Dumont, in Kent, 



A shell, for which I am indebted to Mr. S. P. Woodward, and which 

 is regarded by him as a small variety of Clausilia Rolphii, Leach, 

 proves to be a pale, clear variety of C. Mortilleti. Mr. Wocdward 

 found it on the chalk hills at Charing in Kent, living on the ground 

 in the woods, at the roots of ivy. Compared with a specimen of 



