4312 Mollusks. 



Swedish Cockle, Cardium Suecicum. This rare and exquisite 

 addition to our list was dredged alive in thirty-five fathoms, muddy 

 bottom, eight miles off Lossiemouth, in June, 1853, by Mr. Mac- 

 donald. 



Smooth or Norway Cockle, Cardium Norvegicum, {C. l&vigatum, 

 Flem. and Mac.) Single valves are often picked up on the shore, 

 and entire specimens occasionally found on the fishermen's lines. 



Northern or Wrinkled Lucina, Lucina borealis, (L. radula, Flem. 

 and Mac.) Common. " Moray Firth, in from fifteen to thirty-four 

 fathoms (McAndrew)," F. $ H. 



Spinous Lucina, Lucina spinifera, (Myrtcea spinifera, Flem.) 

 Not common. Mr. Martin has found it at Lossiemouth, and Mr. 

 Murray at Burghead. A few specimens have also been taken from 

 the stomachs of fishes. " The Moray Firth, in thirty-four fathoms 

 (McAndrew and E. F.)" F. $ H. 



Flexuous Lucina, Lucina jlexuosa, {Cryptodon flexuosa, Mac.) 

 Single valves not uncommon. Often forming part of the shelly tube 

 of Terebella. " Scarborough 7 and " Zetland " being both localities 

 given for Lucina leucoma, it may prove yet to be a denizen of the 

 Moray Firth. 



Rusty Montacuta, Montacuta ferruginosa, (also M. oblonga, Flem. 

 and Mac. and M. glabra, Mac.) " Murray Firth (McAndrew)," 

 F. fy H. Found in shell-sand, and in the haddock. Burghead shore, 

 April, 1853. 



Bidentate or two-toothed Montacuta, Montacuta bidentata. From 

 the stomachs of fish killed by the Lossiemouth fishermen ; and com- 

 mon in shell-sand. 



Substriated Montacuta, Montacuta subsiriata. A single specimen 

 of this rare and minute shell was detected by Mr. Macdonald on 

 the spines of Spatangus purpureus, which he had received from 

 Buckie. 



Suborbicular Kellia, Kellia snborbicularis. Not uncommon. 

 " Peterhead," Mac. Burghead, Mr. Murray. Dredged in the Firth 

 by Mr. Macdonald ; and occasionally seen as part of the food of the 

 haddock. 



Red Kellia, Kellia rubra. Discovered in considerable abundance 

 among small Mytili, on the rocks at Burghead, by Mr. Murray, 

 January, 1852. Not unfrequent in shell-sand. 



Horny or Yellowish Cycle, Cyclas cornea, (C. flavescens, Mac.) 

 Order Pot, near Elgin, Patrick Buff, L\q. Marsh below the bank at 



