5878 



Mollusks, 



hard. The west of C umbrae between Fiiitry and Shell Bays ; between 

 Clachland Point and the Corriegills, Arran ; and north-east of Holy 

 Island, may be mentioned as localities. 



Circe minima [Cyprina minima, Cyprina triangularis). This 

 often beautifully marked shell is common in the deeper parts of the 

 laminarian zone in the Clyde district. Wherever suitable ground, 

 that is nullipore, is present, the dredge will seldom come up without 

 containing one or two examples. 



*Astarte sulcata {Crassina scotica, Crassina danmoniensis, As- 

 iarte scotica and danmoniensis). By no means common, though 

 now and then to be met with. West coast of Cumbrae, and Lamlash 

 Bay ; Ayr, Bute, Smith. 



* „ e\\\\)iicd, [Crassina garensis, Crassina elliptica). "It was 

 first discovered near Helensburgh, mouth of the Clyde, by H. Witham, 

 Esq., where it appears to be not uncommon." — Brown. " The 

 earlier specimens which found their way into collections were chiefly 

 collected by Mr. Nicol, and distributed under the MS. name of 

 gairensis." — F. 8$ H. It was so named from Loch Gair, or Gare, at 

 the mouth of which Helensburgh is situated. Mr. Smith has also 

 taken it off Bute. It is, however, very local. 



* „ arctica {Crassina corrugata and IVithami). Mr. Smith 

 includes this in his list of recent shells, under the specific names of 

 corrugata and Withami, as having been found in the Clyde and off 

 Bute. Withami is figured by Mr. Smith in his paper ; and he tells 

 us that " one valve was dredged in deep water in Rothesay Bay, ap- 

 parently the same as that found by Mr. Witham in Yorkshire." 

 Astarte arctica, if met with in the Clyde, is probably fossil. 



„ compressa (Crassina compressa and striata). Lamlash, 

 Landshorough ; Bute, Smith. 



„ triangularis. I have met with a few examples of this little 

 Astarte among shell-sand from " Landsborough's Bay," Lamlash. 



Isocardia Cor. Dredging one day in deep water between Great 

 and Little Cumbrae, I procured two or three single valves of the 

 heart shell. This is the only instance of its occurrence in the dis- 

 trict with which I am acquainted. Although the shells had been 

 some time dead, they were certainly not semi-fossil ; indeed, the Iso- 

 cardia has not, I believe, been met with in the glacial beds of 

 the Clyde. 



Fam. XIV. CardiadcB. 



Cardium aculeatum. Mentioned by Mr. Smith, undoubtedly in 

 error, as " common " in the Clyde. 



