In consequence also of Mr. Bell's papers in the ' Annals,' and of Mr. Jeffreys having lately had an opportunity of examining the Mollusca procured by deep-sea dredging in the Swedish expedition of 1869 on the Josephine Bank and off the Azores, I am enabled to add a few more species and localities to the list of the Coralline- Crag Mollusca, as well as the zones of depth and geographical distribution for some species hitherto considered extinct. Two or three errata in that list will also be noticed.
CONCHIFERA.
Cardita scalaris; C. borealis, Conrad : C; Am.
Kellia ambigua is not Erycina pusilla of Philippi, but Scintilla parisiensis of Conti (not Deshayes) ; the first of these names must therefore stand. In the column of "Geographical distribution" add "At."
Lima ovata (L. nivea, Brocchi) occurred in the Swedish expedition at a depth of 790 fathoms.
L. plicatula (L. squamosa, Lamarck), add Gedgrave.
Montacuta truncata is a variety of M. bidentata ; but the shell figured by Mr. S. Wood as M. bidentata is a distinct species, which Mr. Jeffreys dredged in the last ' Porcupine' expedition, and proposes to name M. ovata.
Pandora inoequivalvis, var. pinna, add Gedgrave.
Thracia inflata is probably T, Conradi of Couthouy (a North- American species), and not T. corbuloides.
Gastropoda.
Adeorbis pulchralis : Swedish expedition, 320-600 fathoms. Margarita trochoidea of S. Wood is the same species.
Cancellaria scalaroides (C. varicosa, Brc), add Gedgrave.
Cassidaria bicatenata (C. tyrrhena, Ch., var.?), add Sutton.
Cerithium adversum (Triforis perversa, L.) : 'Porcupine' expedition, 364 fathoms.
64. Clavatula plicifera ; ¶Pleurotoma elegans, Moller: C-D; B S A; S. Also Red Crag.
J. †Conopleura Maravignoe, Bivona ; ¶Pleurotoma incrassata, Dujardin: C-D ; M W; G.
Emarginula elongata, add Gedgrave.
Fossarus sulcatus = F. costatus, Brc. S. Wood figured two different forms as F. sulcatus and var. lineolatus ; the latter appears to be F. japonicus of A. Adams.
Odostomia plicata, Montagu. This species must also be added from Gedgrave and Sutton. It inhabits the laminarian zone on the coasts of Great Britain, Denmark, France, Italy, and Algeria ; and it occurs in a fossil state at Monte Mario and in the Bed Crag.
Pleurotoma gracilior, A. Bell : Sicilian Pliocene ; Gedgrave. See list of Mr. Bell's new species.
