1898—1902. No. 20.] BRACHIOPODS AND MOLLUSCS. 23 
Margarita helicina, Puters. 
Locality: : 
Aug. 5, 1898. Upernivik, 8-26 m. 
Aug. 18, Camp Clay, Cape Sabine, 4—10 m. 
Aug. 24. y Bay near Rice Strait. 
July 27. 1899. Pims Island. : 
Sept. 22. ,, The winter harbour, Havnefjord, 16 m. 
June 28, 1901. The entrance to Hvalrosfjord. 
June 29. ,, Off the camping ground, Jammerbugten. 
July 5 y The Sound, Jammerbugten. 
July 8  , Renbugten, about 20 m. 
July 9. = _ . 
July 17. The entrance to Gaasefjord. 
” 
July 11. 1902. St. Helena, 4-14 m. Large and small stones. 
Juy 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 margarita helicina 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. (HAge). 
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 with small stones. 
A specimen whose basal diameter is 7.5 mm. and height 7 mm. 
July 8. 1901. Renbugten, 20m. 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. 
