FT7STJS. 329 



his TropJ:on contrarius) from the glacial bed at Brid- 

 lington, and by Forbes (as F. tornatus of Gould) from 

 Bramerton, Dalmuir, and Bridlington ; it was first de- 

 scribed by Linne, in his ' "Wastgotha Resa/ as an Ud- 

 devalla fossil. It is the Mureoc carinatus of Pennant. 

 Donovan figured a half-grown and much cleaned (or 

 ts doctored ") specimen under the name of M. despectus 

 (M. siibantiquatus, Maton and Rackett), supposing it to 

 be Orcadian, on the vague belief of a friend. Pennant's 

 shell (from the Portland cabinet) and that of Donovan 

 are now in my collection. 



F. fornicatus {Tritonium fornicatum, Fabr.) was also 

 figured as a British species, but without any authority, 

 by Donovan ; he at first referred it to the Murex anii- 

 quus of Linne, but subsequently called it M. duplicatus. 

 This is Greenlandie. 



2. F. Norve'gicus*, {Norvagicus) Chemnitz. 



Strombus Norvagicus, Chemru Conch. Cab. si. p. 218, t. 157. f. 1497-8. 

 F. Norvegicus, F. & H. iii. p. 428, pi. crii. & cviii. f. 7-9. 



Body pale orange or yellowish-white, irregularly streaked 

 with purple : mantle thickened on the pillar-side of the shell ; 

 head- veil broad : pallial tube rather long, curved, and wide : 

 tentacles conical, short, and flattened, bordered outside by a 

 narrow line of purple, widely diverging ; tips sometimes dark 

 purple: eyes proportionally small, on bulbs or offsets at the 

 outer base of the tentacles, where the latter are much swol- 

 len : foot huge, oblong, double-edged, and rounded in front, 

 with small angular corners, very broad at the sides, and 

 rounded or bluntly pointed behind : verge large : odontopliore 

 having an oblong rhachis, armed with five small equal cusps 

 or points which occupy the entire base ; pleurae large, the 

 base very long and sloping, middle deeply and widely exca- 

 vated, outer fang hooked, inner fang smaller and tooth-like. 



Shell shaped like a Voluta (the body-whorl and mouth 

 being disproportionately large, compared with the spire, which 

 is abruptly attenuated) ; it is of a porcellanous texture, not 



* Norwegian. 



