64 CATALOGUE OF THE MOLLUSCA 



A variety from deep water is shorter in the spire, and more 

 tumid in the body whorl, and has the canal very much twisted 

 to the left side. The epidermis is thin, pale yellowish horn- 

 coloured, and hispid. The apex is frequently incrusted with 

 black. Animal white. 



Found in the same situations with the last, but rare. 



This species very much resembles F. gracilis but never grows 

 to half the size, and may readily be distinguished from it by an 

 examination of the apex. The nucleus of F. propinquus con- 

 sists of two or three small compact whorls, while that of F. gra- 

 cilis has only about a whorl and a half, which are large, and 

 rather produced at the top, giving the apex a mammillated ap- 

 pearance. The embryos of these two species must, therefore, dif- 

 fer as much from each other as those of F. Turtoni and F. Nor- 

 vegicus. The shell oi F. prop inquus is rather more tumid, and 

 the whorls rather flatter in the middle, and more raised towards 

 the suture than in F. gracilis : the striae also are closer, the aper- 

 ture more contracted towards the canal, and the latter a little 

 more bent. The variety from deep water, dredged by Mr. Howse 

 in sixty fathoms, has much the aspect of a distinct species, but 

 a shell in that gentleman's possession seems to unite it with the 

 normal form. Mr. Howse has figured the variety in the Ann. of 

 Nat. Hist. vol. xix., t. 10, £ 5. 

 G. F. IsLANDicus, Chemn. 



Fusus Beriiiciensis, King in Ann. Mat. Hist, xviii. 246. 

 Tritonium Islandicum, Loven Ind. Moll. Scand. 11. 

 Var. Buccinum Sahini, Gray in Parry's 1st Voyage, 211 ? 



Two specimens of this rare species have been obtained from 

 the deep-water fishing boats by Mr. King. 



Through the kindness of Mr. Gray we have had the oppor- 

 tunity of examining his specimens of B. Sahini, which appears 

 to be a small variety of this, but the species of this group come 

 so very near to each other, that we should not like to speak de- 

 cidedly. Further investigation induces us to consider our spe- 

 cies the true Fusus Islandicus of Chemnitz. 

 7. F. Turtoni, Beayi. 



