311 



1 moreover suppose the following species of which a few' 

 specimens only are at hand to have their northern hmit at 

 Angmagsalik: Cardium elegantulum Moll, and Dentalium entale L. 



The mentioned species which stop north of Angmagsalik 

 are likewise wanting at the colonized West-Greenland. And 

 the species which have their northern limit at Angmagsahk 

 belong also to the fauna of the colonized West- Greenland. It 

 is reasonable to believe that still more of the species of the 

 west-coast reach the south-eastern Greenland. In the shore 

 belt we still want species as YoJdia hyperborea Torell, Lima- 

 tula subauriculata Mont., Fecten islandicus Mtill. M, Cyamium 

 minutum Fabr. and Tellina balthica L.'^). They will probably 

 be found later on, when a greater part of the south-eastern 

 coast has been investigated. At present our knowledge is, as 

 said, limitid to the area around Angmagsalik, which forms the 

 northern limit of Southeast-Greenland. 



We are now able to settle that the Northeast-Greenland 

 has a pure high-arctic mollusc-fauna. The Southeast-Green- 

 land on the contrary is a transitional area where several high- 

 arctic forms have given up (at any rate Yoldia {Portlandia) 

 arctica, Limatula hyperborea, Ästarte crenata var. acuticostata 

 and Pandora glacialis] while on the other hand several southern 

 forms have immigrated ^). 



In a previous paper*) I have pointed out that we with 



That Pecten islandicus occurs in a fossil state in the northern East- 

 Greenland I have mentioned on p. 301. 



Another might perhaps also mention Nucula nucleus L., Cardium 

 minimum Phil., Cardium fasciatum, Mont, and Syndosmya nitida Müll. 

 1 have, however, a not quite unfounded doubt that these species wrongly 

 have been referred to Greenland's fauna, but more about this at another 

 occasion. 



Or, perhaps more rightly spoken, have still resisted, as A. G. Nathorst' s 

 discovery of raised beds with Mytilus edulis in the Northeast-Green- 

 land suggests that the southern fauna formerly has had a wider range 

 than at present (comp. p. 300 — 301). 



Ad. S. Jensen: The Fishes of East-Greenland. Medd. om Grønland, 

 XXIX, 1904, p. 217—220. 



