1898-1902. No. 20.] BRACHIOPODS AND MOLLUSCS. 23 



Margarita, helicina, PIIIPPS. 



Locality: 



Aug. 5. 1898. Upernivik, 8-26 in. 



Aug. 18. ,. Camp Clay, Cape Sabine, 410 m. 



Aug. 24. Bay near Rice Strait. 



July 27. 1899. Pirns Island. 



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



June 28. 1901. The entrance to Hvalrosfjord. 



June 29. Oft' the camping ground, Jammerbugten. 



July 5. The Sound, Jammerbugten. 



July 8. Renbugten, about 20 m. 



July 9. 



July 17. The entrance to Gaasefjord. 



July 11. 1902. St. Helena, 414 m. Large and small stones. 



July 15. Off Havhestfjeld, North Devon. 



July 17. East of the large glacier, North Devon. 



July 19. Off the camping ground, North Devon, 6 14 m. Small 

 stones and algae. 



On the south side of Jones Sound, along the shore of North Devon 

 and at St. Helena maryarita lielicina was very common; but on the 

 north side of the Sound it seems on the contrary to be scarce. At the 

 head of the Gaasefjord, where mollusc fauna is otherwise remarkably 

 abundant, this species was wanting. 



In a specimen from Renbugten the basal diameter is 9.2 mm. and 

 the height 6 mm. In another specimen from the same locality these 

 measurements are 8 mm. and 5.2 mm. respectively. Several specimens 

 from North Devon also are of the same size. On the west coast of 

 Greenland the species has a basal diameter of 6.5 mm. (POSSELT), but 

 on the other hand its basal diameter on the east coast is 8.5 mm. (HAGG). 

 At Spitzbergen too the species can attain the same size as these speci- 

 mens from Jones Sound; and in the Bering Sea it can even be as much 

 as 12 mm. On the Norwegian coast it attains a size of 8 mm. 



Margarita olivacea, BROWN. 



Locality: 

 Aug. 1. 1900. Off the entrance to Stordalcn, Havnefjord, 10-50 m. Small stones. 



3 specimens the largest of which has a basal diameter of 6.5 mm. 



and a height of 5.5 mm. 

 Sept. 19. . Off Forvisningsdalen Gaasefjord, 4-40 m. Clay Avith small stones. 



A specimen whose basal diameter is 7.5 mm. and height 7 mm. 

 July 8. 1901. Renbugten, 20 m. A specimen whose basal diameter is 5 mm. and 



height 4.5 mm. 



The spiral lines in all the specimens are faintly developed: they 

 could, however, be clearly seen under the magnifing glass. 



