7248 MoUusks. 



Ovula patula Conovultis albus 



Cylichna Lajonkaireana (Bast.) Sepiola atlanlica 



„ nilidula Rossia maciosoma ? 



Philene quadrata Loligo vulgaris 



Doris ulideana Ommastiephes Eblanse 



^olis tricolor Spirula Peronii 

 Hermaea bifida 



I am of opinion that the Arctic Mollusca {Natica clausa, Astyris 

 Holbollii, Lacuna lahiosa, Trophon scalar if ormis^ &c.), which have 

 recently been dredged on the Turbot Bank off Larne, and have 

 created so much interest, must be regarded as fossil. Although the 

 shells are in a beautiful state of preservation, they show symptoms of 

 having been washed to their present site from a matrix of red shelly 

 marl. In some specimens the marl may be found still within the 

 mouth ; in almost all, signs of it may be seen in the red stains of the 

 suture. Even as fossil they are highly interesting, as indicating a bed 

 different in character from any yet discovered ; but shown by the cha- 

 racter of the shells found to belong to the glacial period. 



If the Mollusca met with in Loch Fyne and the North Channel be 

 added to those of the Firth of Clyde, the number of species hitherto 

 taken in the whole " Clyde Province " amounts to three hundred and 

 ninety-four. 



Several of the rarest species of the Firth of Clyde are much more 

 abundant in the other subprovinces. 



There can be little doubt that there are several species yet to be 

 discovered in the Firth of Clyde, and probably careful dredging in the 

 mid-channel between Arran and Ayrshire would be rewarded by the 

 finding of some of the deep-water Loch Fyne forms. 



Alfred Merle Norman. 

 Sedgefield, Ferry Hill, 

 October 9, 1860. 



Errata. — Page 5876, line 34, for " Veniorupis " read " Venerupis " Page 5877, 

 line 12, for " striata " read " striatula" Page 5878, line 12, for " Bay ; " read •' Bay." 

 Page 5882, line 28 and line 32, for " trians '' read " hians " Page 5884, line 13, dele 

 " coast " Page 7203, line 26, for " B. laevis" read " C. laevis " Page 7204, line 5, for 

 " skin " read " spire " Page 7207, line 28, for " common ;" read " common." Page 

 7208, line 14, for " Eulenia distorta" read " Eulima distorta" Page 7209, line IJ, 

 for "Lamlash ; " read " Lamlash." Page 7210, line 22, for " had " read " have " Page 

 7211, line 12, for "elathrus" read "clathrus"' Page 7211, line 19, for "Adis" read 

 "Aclis " Page 7212, line 25, for " Halichondria favinaria " read " Halichondria farin- 

 aria" Page 7212, line 31, for " Lover " read " Loven " — A. M. N. 



