310 



36. Lyonsia arenosa MöU. var. sibirica Leche, p. 369. 



37. Lyonsiella abyssicola M. Sars, p. 360. 



38. Thracia truncata Turt., p. 360. 



— — var. devexa G. O. Sars. 



39. Thracia septentrionalis Jeffr., p. 360. 



40. Pandora (Kennerleyia) glacialis Leach, p. 361. 



41. Neaera obesa Lov. var. glacialis G. O. Sars, p. 361. 



The majority of the here enumerated species are common 

 to the whole coast area, a few of them not, on the contrary, and 

 just the last ones show that the south-eastern Greenland with re- 

 gard to the mollusc-fauna has a strong resemblance to the west- 

 coast (it is the colonized West-Greenland), while the north-eastern 

 Greenland forms a part for itself. It must^ however, be added that 

 by the south-eastern Greenland is meant the area around Ang- 

 magsalik, as the coast from here downwards to Cape Farvel 

 is almost unknown with regard to the lower animal life; there 

 is, however, every reason to believe that the fauna will turn out 

 to be homogeneous in its broad features. 



If we compare the mollusc-fauna in the Angmagsalik area 

 (ca. 65V2 — 66V2° N.) with that of the northern East-Greenland, 

 it will at once be noticed that there are certain species whose 

 northern limit is situated at Angmagsalik and that other species 

 on the contrary do not go as far southward as to Angmagsalik 



We shall here only lay stress on such species which occur 

 in abundance and which according to their size are not easily 

 overlooked. As southern species which certainly stop at Angmag- 

 salik I can from shallow water mention the mussel (Mytilus edulis 

 L)., and the periwinkle (Littorina rudis Mat.), from deeper 

 water Astarte sulcata d. C. Among the northern forms which stop 

 north of Angmagsalik I can provisionally call the attention XoYoldia 

 (Portlandia) arctica Gray and Pandora glacialis Leach from 

 shallow water, and from deeper water Limatula hyperborea 

 n. sp. and Astarte crenata Gray var. acuticostata Jeffr. 



