158 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 /’. gracilis but never grows 
to half the size, and may readily be distinguished from it by an 
examination of the apex. The nucleus of /. 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 #. Turtont and /. Nor- 
vegicus. The shell of /. propinquus is rather more tumid, and 
the whorls rather flatter in the middle, and more raised towards 
the suture than in 7’. graciiis: the striz 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, fi 5. 
6. F. Isnanpicus, Chemn. 
Fusus Berniciensis, King in Ann. Nat. Hist. xviii. 246. 
Tritonium Islandicum, Lovén Ind. Moll. Scand. 11. 
Var. Buccinum Sabini, Gray in Parry’s lst 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 Bb. Sabini, 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. Turtont, Bean. 
