A. E. Verrill — Catalogue of Marine Mollusca. 
571 
eroded, and very thin, and in many cases the shell-substance itself 
has entirely disappeared, leaving only the crust of iron-oxide, lined, 
perhaps, by a remnant of the epidermis. These encrusted specimens 
are rough, and mostly nearly circular in outline. 
Oft' Martha’s Vineyard, stations 891-895, 941, 949, 9 4 7, 997, 999, 
1028, in 1 5 -2 to 500 fathoms. Oft* Chesapeake Bay, in 300 fathoms, 
station 898. 
Gulf of St. Lawrence. Greenland. Finmark to Great Britain and 
Portugal. Mediterranean and Adriatic. Off the Azores. At various 
depths to 1012 fathoms. Fossil in the Miocene, Pliocene and Post- 
pliocene of Europe. 
Montacuta fabagella (Conrad) Verrill. 
Lepton fdbagtlla Conrad, Marine Conch., p. 53, pi. 11, fig. 3, 1831. 
Verrill, Rep. Invert. Anim. Vineyard Sd.. in Rep. U. S. Fish Com., i, p. 688 
(auth. cop., p. 394), 1874. 
Rhode Island, — Conrad. I have no personal knowledge of this 
shell. It appears to be a species of Montacuta. 
Montacuta G-OUldii Thomson. 
Thomson, Am. Journ. Conch., iii, p. 33, pi. 1, fig. 15, 1867. 
I have not seen this species. Perhaps it is the same as M. faba- 
gella. 
Montacuta Dawsoni Jeffreys. 
Jeffreys, British Conch., ii. p. 216; v, p. 178, pi. 31. fig. 7. 
Newfoundland, coll. Verkruzen (t. Jeffreys). 
Montacuta bidentata (Montagu). 
(}. O. 8ars. op. cit, p. 69, pi. 19, figs. 17, a, b (non Could.) 
Long Island Sound, near New Haven, shore, 1868; Cape Cod Bay, 
7 fathoms, 1879. 
Montacuta ovata Jeffreys. 
Proc. Zool. Soc., London, 1881, p. 698. 
A few specimens of a species, which agrees well with this, were 
taken off Martha’s Vineyard, in 100 to 153 fathoms, but, though liv- 
ing, they were all so much encrusted with iron-oxide that their iden- 
tity is somewhat doubtful. 
Tbans. Conn. Acad., Vol. V. 69 
July, 1882. 
