the West Coast of Davis's Strait. 329 



neral habit with the figure in Chemnitz : it is however of a pale 

 greenish horn-colour, except towards the apex, where it is of a 

 dingy bluish gray, and the spiral striae appear to be more crowded. 

 The columella in front is straight, and has a decided plait or fold. 

 The epidermis is ciliated. 



This is closely related to B. Humphrey sianum, but may be di- 

 stinguished from that species by its more ovate form, by the de- 

 cided plait on the columella, and by the character of the surface, 

 which is much more irregularly and strongly marked with the 

 lines of growth, causing it to be slightly wrinkled longitudinally, 

 as represented in Chemnitz's figure. 



X Buccinum Grcenlandicum, n. s. PI. V. figs. 8, 9. 



Shell ovate, thin, dull, of a pale reddish fawn-colour ; spire 

 well produced, conical; whorls six or seven, ventricose, some- 

 what angulated in the centre, with indistinct longitudinal 

 plaits, and two strong distant noduliferous spiral ridges or keels 

 on the centre of the body-whorl, one of which passes up 

 the spire : the whole surface is divided by depressed spiral lines 

 into broad flattened striae, which are crowded with finer spiral 

 strise of a similar character crossed by minute lines of growth, 

 giving the surface a shagreened appearance; mouth roundish 

 oval, partaking of the colour of the shell ; outer lip thin, slightly 

 reflected ; interior with two grooves corresponding to the spiral 

 ridges; canal longer than usual, and rather broad; columella 

 with an indistinct plait, well bent in the centre, straight in front, 

 with the anterior extremity sloping to the left, pale, very thin 

 and pellucid; epidermis inconspicuous, very delicate, smooth, 

 greenish yellow and horn-like. Length If inch ; breadth j inch. 



The surface of this shell is peculiar : it is smooth and entirely 

 without gloss, and to the naked eye the broad flat striae only are 

 visible ; a lens is required to show the minute shagreened appear- 

 ance caused by the fine decussations. The longitudinal plaits are 

 strongest on the spire, and are most conspicuous on the centre 

 of the whorl ; the nodules on the spiral ridges are at the points 

 where they are crossed by the plaits. 



This species has considerable resemblance in general form to 

 the B. glaciate of Lamarck, but is much smaller and very much 

 thinner, judging from Kiener's figure and from the figure in 

 Chemnitz. It differs from that shell also in the greater length 

 of the canal, in the shape of the columella, and in the character 

 of the surface of the shell. It probably likewise resembles 

 B. polaris of Gray, but the characters that distinguish it from 

 B. glaciate will also distinguish it from this species. 



Two specimens were procured ; one appears to be adult. 



