1898-1902. No. 20.J BRACHIOPODS AND MOLLUSCS. 25 



19.5 mm. and 14.2 mm., in one from East Cape 19.2 mm. and 15.5 mm., 

 and in one from North Devon they were 20 mm. and 15.5 mm. At 

 Cumberland Sound this form attains a basal diameter of 22 m., on the 

 east coast of Greenland it can be 21.9 mm. and at Spitzbergen 19.5 mm. 

 All the specimens are quite smooth and belong to the typical 

 margarita umbilicalis BRODERIP & SOWERBY. 



Margarita striata, BRODERIP & SOWERBY. 



Locality: 



July 7. 1901. Bay near Landsend, about 35 m. One quite young specimen, and 

 two older ones measuring: basal-diameter 15.5 mm. and 12 mm., 

 height 15.2 mm. and 11.5 mm. For comparison I append measure- 

 ments of two specimens of this form from the west coast of Novaya 

 Zenolya, which are in the Bergen Museum: basal diameter 16.5 mm. 

 and 15.2 mm., height 17.5 mm. nnd 16.5 mm. 



At Spitzbergen this form attains a basal diameter of up to 22.5 mm. 



The sculpture of shell and form of whorls exactly agrees with what 

 has been described by FRIELE in the case of specimens from Magdalena 

 Bay (Cf. KRAUSE). 



Pilidium radiatum, M. SARS. 



Locality: 



Aug. 8. 1900. The winter harbour, Havnefjord, 30 m. One specimen. 

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



2 specimens. 



June 28. 1901. The entrance to Hvalrosfjord. One specimen. 

 July 8. Renbugten, about 20 m. One specimen. 



The largest specimen measures: 



Long. 24.5 mm. Lat. 22 mm. Alt. 9.5 mm. 



The specimens differ from those depicted by G. 0. SARS in that 

 the shell is more oblique and the spire more bent over. The specimens 

 from, the winter harbour and from Renbugten have radiating reddish- 

 brown bands, which are however faint. These bands of colour are 

 quite absent on the other hand in the specimens from Gaasefjord and 

 Hvalrosfjord. 



Pilidium radiatum has not been previously found in waters north 

 of America. However it has been met with to the east along the west 

 coast of Greenland and to the west in the Bering Sea. 



Velutina, morvillia, zonata, GOULD. 



Locality: 

 July 27. 1900. The winter harbour, Havnefjord, about 40 m. Small stones. One 



specimen. 

 July 15. 1902. Off Havhestfjord, North Devon. Stones and large fucaceae. One 



specimen. 



