LAMELLIBRANCHIATA. 



(43 37'N.L., 2°o8'W.L.; 250-790^11.). On the western side of the Atlantic it is distributed from Hatteras 

 to the southernmost part of Labrador 1 ). 



Ostreidae. 



Ostrea edulis Linne. 



[I c el a n d.| 

 In "Brit. Conchol." vol. II, 1863, p. 40 Jeffreys gives Iceland as the northern boundary 

 for the distribution of the oyster-) and Mohr as his authority. If we look up the work of the latter: 

 "Forsog til en Islandsk Naturliistorie", 1786, we find Ostrea edulis mentioned (p. [30), it is true, but 

 with the addition, that it "is said to occur in Hvalfjorden" according to E.Olaf'sen. But in the work 

 of Kggert Olafsen and Biarne Povelsen: "Reise igjennem Island" (2nd part, 1772, p. 1010) the 

 record cited is followed by the remark "but we have not seen it." As no other naturalist has found 

 the oyster at Iceland since that time, it may be deleted from the fauna. 



[The Faeroes.] 



From here the collection of the Zoological Museum possesses quite a small oyster (length 



8 """., height jo '.) attached to a shell of Modiola modiolus and still containing the dried-up sofl 



parts; the specimen was sent in by Sysselmand Miiller in 1873. 



So far as I know, this is the only evidence we have, that the oyster may occur at the Fsero 

 It is hardly credible, however, that adult oysters occur at the islands, as they would scarcely have 

 escaped attention. Nor can the small specimen referred to be considered to have been transported 

 here as larva by oceanic currents, as no current runs from the English or other European coasts to 

 the Faeroes •). But experiments have perhaps at some time been made to "introduce" oysters at the Fseroes. 



Pectinidae. 



Pecten pusio Linne. 

 Ostrea pusio Linne, Syst. Nat. ed. 12, 1, 2, 1767, p. 1146. Pecten pusio Jeffreys, Brit, Conchol. 

 II, 1863, p. 51, PL 22, fig. 1. 



Pecten (Hinnites) distortus Morch, Vidensk. Medd. naturhist. Foreuing 1867, p. 98. 



') In a geologically very late (postglacial) period Anomia souamit/a was distributed to West Greenland, where it is 

 now extinct; cf. Ad. S.Jensen: On the fossil quaternary Mollusc-Fauna of Greenland (Medd. 0111 Gronland, XXIX, 

 p. 295); and Ad. S.Jensen and P. Harder: Post-glacial changes of climate in arctic regions as revealed by iuvi 

 on marine deposits (Postglaziale Klimaveranderungen, Stockholm 1910, p, 199) 



-) The same statement is repeated in Proc. Zool. Society, 1 879, p, 555. 



i) In his "Faunula Moll. Insul. Fseroensium" (p. 99) Morch cites the following passage from Landt: "it (i. < 

 sguamula) is attached to small stones on the bottom at the same place as "the small oyster, Ostrea 1", which he lias fished 



up from the bottom of Vestmanhavnsfjorden close to the Vaago side'' and adds to this: "uh.it we are to understand by 

 Landt s Ostrea moot/a is not clear; Landt has perhaps overlooked the hole in the shell of he may even have 



meant a distorted Saxicava". 



i) The Faroes are washed by the Gulf Stream, but it is improbable that the pelagic life of the oystei is of such 

 long duration, that the larvae could be carried the long distance across the Atlantic. Further, the specimen in question 

 belongs to the European oyster (Ostrea edulis), as the muscular impression is white, not dark as in the America! 

 virginica (cf. Whiteaves, Catal. of the marine Invertebrate of Eastern Canada, 1901, p. 



