Mollusca in the Collection of the Zoological Society. 375 



were attached ; on the body- whorl of one of the specimens brought 

 home by Lieut. Belcher, some small Balani have fixed their abode, and 

 two of them are near the lip. Dr. GoodalPs specimen was said to have 

 been brought from Newfoundland ; those from which our description was 

 taken were dredged up, in from ten to fifteen fathoms water, in the bay 

 between Icy Cape and Cape Lisbon. 



*Trichotropis Borealis. 



T. testd suboblongdf anfractibus quatuor rotundatis, subQaneellatis, 

 ultimo carinis tribus vel quatuor setosis ; long, y^, lat. \^,' polL 

 Hab, in Oceano boreali, prope Insulam Melville dictam. 



Shell of a rather oblong form, with from three to four volutions, which 

 are somewhat rounded, but furnished with three or four not very promi- 

 nent, obtuse, keels, with smaller intervening striae, which are decus- 

 sated by the lines of growth. The columella and the canal immediately 

 below it are rather more lengthened than in the last species ; the umbili- 

 cus is also rather more expanded, and consequently not so Hnear as in 

 the last species ; on its edge as well as on the keels of the outside of the 

 shell, the epidermis is produced into numerous bristle-like appendages. 



Several specin^ens were brought to England by Captain Parry and 

 Lieut. Griffiths ; and a single individual has occurred at Oban, in 

 Argyleshire : it was found there by the Rev. R. T. Lowe, who has oblig- 

 ingly enriched Mr. G. B. Sowerby's collection with it. Lieut. Belcher 

 procured a single specimen at' Icy Cape. 



Whether the Fusus A-costatus of Say,* might not, with propriety, 

 constitute a third species of this genus, must, in our opinion, still remain 

 undecided ; it is a fossil which attains a considerable size, and it differs 

 materially from both our species in having an enormous umbilicus. 



BUCCINUM BOREALE. 



B. testd tenuis ovato-fusiformi, anfractibus ventricosis striatis; ultimo 

 suturd simplici; cceteris suturam versus plicatis; aperturd patuldy 

 labio superne sub-lobato; epidermide fused, crassd; long. 2^^, 

 lat. 1^, poll. 

 Habitat in Oceano Boreali. 



* Journal of the Academy of Natural Sciences of Philadelphia, Vol. IV. 

 p. 127, t. vii. f. 5. 



