462 CONID^. 



length, has a somewhat oblong figure, that is contracted 

 above to a sharp angle, and gradually attenuated below to 

 a rather short canal. Little or no enamel is visible on 

 the space between the two lips. The very sharp edge 

 of the arcuated outer lip is retuse, or exhibits a small but 

 distinct shallow sinus, at its posterior extremity. The 

 straightish and greatly produced pillar, which curves 

 slightly to the left, forms a more or less distinct rounded 

 off obtuse angle, with the short and convex upper portion 

 of the inner lip. 



A fair sized individual that measured a quarter of 

 an inch in length, was the eighth of an inch in breadth. 



Loven has a brief notice of the animal. According 

 to him it has slender tentacles and teeth, characteristic 

 of a true Mangelia. 



This very rare and beautiful little shell, a member of 

 our boreal fauna, was first taken at Lerwick by Mr. 

 Jeftreys, and subsequently by Mr. M'Andrew and Pro- 

 fessor Forbes, in forty-five fathoms water, between Fair 

 Island and Zetland. Mr. Barlee has since met with it in 

 several localities in the deep water around the Zetlands ; 

 and Lieut. Thomas has taken it off the Orkneys. It 

 ranges to Finmark. 



M. TERES, Forbes. 



Destitute of longitudinal ribs, usually variegated ; with rather 

 large and prominent spiral ribs ; whorls very deeply divided, 

 the infrasutural area being retuse : labial sinus very profound. 



Plate CXIII. fig. 1, 2, and (Animal) Plate R. R. fig. 3. 



Pleurotoma teres, FoRBns, Ann. Nat. Hist. vol. xiv. p. 412, pi. 10, f. 3. — 

 FoRbES in Reeve, Conch. Icon. vol. i. pi. 1.0, f. 161. 

 „ boreale, Lov^N, Index Moll. Scandin. p. 14, probably. 



