50
CORBULID.E.
curved ; rostral prolongation considerable, much more attenuated than in the other species : heaks small and maramillary ;
umbones by no means prominent ; dorsal area narrowly excavated on the posterior side : cartilage orangecoloui', contained
in a triangular receptacle which shelves outwards : hinge-line
straight : hinge-plate narrow and slight : teeth, an extremely
minute tubercular cardinal in the left valve, and a strong
erect and triangular lateral in the right valve on the posterior
side : inside glossy, with a rib on the posterior side : muscular
scars well marked ; anterior irregularly oblong, posterior triangular. L.0-25. B. 0-415.
Var. lactea.
Shell milk-white, more glossy, transparent,
and delicate, ha^'ing only two ribs on the posterior angle,
besides those on the rostral process.
Habitat : Loch Fyne^ 40-70 f., wdth the last species
(M'Andi'ew and Barlee) ; Cumbrae, Firth of Clyde
(Robertson) ; Skj^e and Shetland (Barlee and J. G. J.)
The variety was di'cdged by me on a sandy bottom, in
78 f., from 40 to 50 miles east of the Whalsey Skerries,
Shetland.
Upper tertiaries of Greece (Desliayes) ;
Antwerp (Nyst) ; Gnise-Lamotte, France (De Koninck)
Calabria (Philippi).
It inhabits the coasts of Scandinavia at depths ranging between 10 and 100 f. (Loven
and others) ; Cartliagena, in 30 f , and Gibraltar, in 45 f.
CM^lndrew) ; Provence, in 60 f. (Martin) ; Gulf of
Genoa, in 25 f. (J. G. J.) ; Adriatic (Chiereghini)
;
Naples (v. Martens) ; ^gean, in 20-185 f. (Forbes) ;
Malta, in 40 f., Gulf of Tunis, in 35 f., Madeira, in
18-24 f., and Teneriffe, in 20-35 f. (M^Andrew).
Specimens dredged by the late Professor Barrett in
deep water at Jamaica are scarcely distinguishable from
those of the North Atlantic.
This exquisite shell cannot well be mistaken for
N. abbreviata ; their shape, sculpture, and dentition are
very different.
Nyst seems to have been the earliest describer of it.
CORBULID.E.
curved ; rostral prolongation considerable, much more attenuated than in the other species : heaks small and maramillary ;
umbones by no means prominent ; dorsal area narrowly excavated on the posterior side : cartilage orangecoloui', contained
in a triangular receptacle which shelves outwards : hinge-line
straight : hinge-plate narrow and slight : teeth, an extremely
minute tubercular cardinal in the left valve, and a strong
erect and triangular lateral in the right valve on the posterior
side : inside glossy, with a rib on the posterior side : muscular
scars well marked ; anterior irregularly oblong, posterior triangular. L.0-25. B. 0-415.
Var. lactea.
Shell milk-white, more glossy, transparent,
and delicate, ha^'ing only two ribs on the posterior angle,
besides those on the rostral process.
Habitat : Loch Fyne^ 40-70 f., wdth the last species
(M'Andi'ew and Barlee) ; Cumbrae, Firth of Clyde
(Robertson) ; Skj^e and Shetland (Barlee and J. G. J.)
The variety was di'cdged by me on a sandy bottom, in
78 f., from 40 to 50 miles east of the Whalsey Skerries,
Shetland.
Upper tertiaries of Greece (Desliayes) ;
Antwerp (Nyst) ; Gnise-Lamotte, France (De Koninck)
Calabria (Philippi).
It inhabits the coasts of Scandinavia at depths ranging between 10 and 100 f. (Loven
and others) ; Cartliagena, in 30 f , and Gibraltar, in 45 f.
CM^lndrew) ; Provence, in 60 f. (Martin) ; Gulf of
Genoa, in 25 f. (J. G. J.) ; Adriatic (Chiereghini)
;
Naples (v. Martens) ; ^gean, in 20-185 f. (Forbes) ;
Malta, in 40 f., Gulf of Tunis, in 35 f., Madeira, in
18-24 f., and Teneriffe, in 20-35 f. (M^Andrew).
Specimens dredged by the late Professor Barrett in
deep water at Jamaica are scarcely distinguishable from
those of the North Atlantic.
This exquisite shell cannot well be mistaken for
N. abbreviata ; their shape, sculpture, and dentition are
very different.
Nyst seems to have been the earliest describer of it.