244 CANCELLARIID^. 



Genus I. TOREL'LIA*, Loven, MS. PL IV. f. 1. 



Shell globose, covered with a velvety epidermis : spire very 

 short ; apex depressed : mouth roundish, fui'nished with a 

 blunt tubercle on the pillar, at its base ; groove internal, 

 scarcely perceptible [: operculum horny (Loven)]. 



One species only has been discovered ; it is Zetlandic 

 and Scandinavian, and appears to be very rare. 



ToRELLiA VESTi'TAf, Jeffreys. 



Becluzia aperta, Jeffr. in Ann. & Mag. N. H. 3rd ser. iii. p. 114, pi. iii. 

 f. 22 a-c. 



Shell intermediate in shape between that of a Littorina 

 and a Natka, rather thin, semitransparent, and of a dull hue : 

 sculpture, numerous fine spiral stride, besides more close-set 

 and minute longitudinal striae, which are chiefly discernible 

 on the base ; these latter cross the spiral striae and form short 

 rows in their interstices : colour chalky- white : epidermis pale 

 yellowish-brown, velvety, and marked like the surface of the 

 shell : spire conical, with a blunt apex : tvhorls o-C), tumid 

 and rapidly enlarging ; the last occupies three-fourths of the 

 spire (viewed mouth downwards), and is considerably dilated : 

 suture deeply and narrowly channelled : mouth nearly round, 

 expanding and somewhat funnel-shaped ; the basal groove is 

 extremely short, and is not indicated by any notch in the outer 

 margin : outer lip semicircular and sharp-edged : inner lip 

 somewhat flexuous, broad, and folded back over the pillar, from 

 which it is for the most part separate : pillar curved, having 

 at its base a callous protuberance, below which is the short 

 groove above mentioned : umhillcus rather small, narrow, and 

 oblique, partly concealed by the reflexion of the inner lip. 

 L. 0-6. B. 0-6. 



Habitat : East coast of Shetland (Barlee) ; a single 

 dead specimen. Although perfect, it is not in good 

 condition. Professor Loven showed me at Stockholm 

 a specimen which he had dredged alive on the coast of 



* A well-merited compliment to Dr. Otto Torell, of Lund, the recent 

 explorer of the Ai'ctic Ocean at Spitzbergen. 

 t Clothed, SO: with a thick epidermis. 



