1898-1902. No. 20.] BRACHIOPODS AND MOLLUSCS. 31 



This species is not merely the most widely distributed of the bucci- 

 nidae, but it is also the most abundant. Most specimens can be re- 

 ferred to forma normalis, though in some localites the varieties tene- 

 brosa, HANCOCK and sericata, HANCOCK were also very common. The 

 variety patula, G. 0. SARS seems on the other hand to be scarce. 



The largest specimen of the typical forms measures: Height 64 mm., 

 breadth 26.5 mm., height of aperture 21 mm., and breadth of aperture 

 15 mm. Another very thick-shelled specimen measures 60.5 mm., 

 34 mm., 30 mm., and 18.5 mm. respectively. The maximal height of 

 the varieties tenebrosa and sericata is 31 mm., and of patula is 

 25.5 mm. 



From the winter harbour, Havnefjord, 12 m., we have a specimen 

 which much resembles the variety major, POSSELT, though it seems to 

 have finer longitudinal ribs. It measures: Height 53.5 mm., breath 

 31 mm., height of aperture 27 mm., and breadth of aperture 17 mm. 



From Havnefjord, Hvalrosfjord and Landsend we have buccinidae 



one in each case which very closely resemble the bucciuinn 

 hancocki, MORCH from Cumberland Sound which has been depicted and 

 described by PFEFFEB. JEFFREYS considers buccinum liancocki MORCH 

 s, gronlandicum HANCOCK as a variety of buccinum glaciale in which 



