1898-1902. No. 20.] BRACHIOPODS AND MOLLUSCS. 17 



Aug. 3. 1900. Fosheims Peak and the valley on the west side of Havnefjord, 



4-40 m. 



Aug. 4. Blseksprutgrunden, Havnefjord, 2030 m. Small stones. 

 Sept. 20. The head of the Gaasefjord, 640 m. Clay with small stones. 

 July 8. 1901. Renbugten, about 20 m. 

 July 9. 



July 19. The entrance to Gaasefjord. 



Aug. ',30. Gaasefjord, 8 m. Clay with small stones and fucaceae. 

 July 19. 1902. Off the camping ground, North Devon, 6-14 m. Small stones and 



fucaceae. 



The specimens have a length of up to 50 mm. Most of the older 

 individuals belong to the typical West Greenland form, with the posterior 

 truncata portion of the shell distinctly short (Gf. JENSEN: Studier over 

 nordiske Mollusker. 1. My a fig. 8 6). Only a few shells are similar to 

 the variety uddevallensis, HANCOCK. They have, however, not so thick 

 valves as at any rate the fossil shells of this variety, nor is their trun- 

 cate end so short. In younger individuals the shell is ovate, and this 

 is especially the case when they are quite young. 



Saxi'cava arctica. LINNE. 



Locality: 



July 30. 1898. Godhavn, about 6 m. 



Aug. 24. Rice Strait. 



July 27. 1899. Pirns Island. 



Sept. 22. The winter harbour, Havnefjord, 16 m. 



March 7. 1900. Bay south of Sjopolse Ness, Havnefjord, 3040 m. Small stones 



slightly overgrown with laminaria. 



July 25. The winter harbour, Havnefjord, about 20 m. Rocks and stones. 



July 26. The entrance to Stordalen, Havnefjord, 20 m. Clay. 

 July 30. 



July 31. Round Vestre Sound, Havnefjord, 2060 m. 



Aug. 1. Off the entrance to Stordalen, Havnefjord, 10 50m. Small stones. 



Aug. 3. Fosheims Peak and the valley on the west side of Havnefjord, 



440 m. Small stones. 



Aug. 4. Sjopolse Ness, Havnefjord, 3050 m. Small stones. 



Aug. 4. Blseksprutgrunden, Havnefjord, 2030 m. Small stones. 



Sept. 20. The head of the Gaasefjord, 640 m. Clay with small stones. 

 Sept. 20. , 30 m. Soft brown clay. 



July 12. 1901. Bay near Landsend, about 35 m. 



July 17. The entrance to Gaasefjord. 



Aug. 16. The head of the Gaasefjord, about 14 in. 



Common. However the species is not found anywhere in any large 

 quantity. The specimens belong partly to the form arctica LINNE and 

 partly to the more elongated smooth form plioladis LINNE s. rugosa 

 LINNE. Most of the specimens of both forms arctica and pholadis have 

 very thick valves and closely resemble in this respect the valves of this 

 species that are found in our late-glacial deposits. In the same locality 



2 



