MARSHALL : ALTERATIONS IN ‘BRITISH CONCHOLOGY.’ 35 
O. acicula var. ventricosa Forbes. (Ibid.). 
Eulima distorta Desh. (Ibid.) 
I must repeat here what I have already informed Mr. 
Sykes in reply to his inquiry zz /¢¢., and which should 
have satisfied him, that whatever this species might even- 
tually prove to be, “in no case should I ascribe £. latipes 
Wats. to my MS. £. ‘umidosa.” He should be aware of 
the elementary fact that a MS. name is of no account 
against a published one. 
Natica groenlandica Beck. Jeffreys has abandoned the JV. 
grentandica of “ British Conchology” in favour of JV. 
pallida Brod. and Sow. on the ground of priority ; but it is 
doubtful what is Broderip and Sowerby’s &. pallida, as the 
type is lost and no figure was published with the original 
description. Dr. Boog Watson puts the matter thus :— 
“Tt is quite possible that the /V. pallida of Gray, Midden- 
dorff, and Philippi may be W. grwnlandica of Beck, though 
all three authors assert the contrary. Jeffreys himself says 
that he had been ‘inclined to doubt whether it might not 
be ZV. zslandica.’ The state of the case is this—some shells 
called WV. pallida Brod. and Sow. are WV. grenlandica Beck, 
but whether they really are Broderip and Sowerby’s species 
no one can tell.” (‘ Challenger’ Report, p. 448). In this 
view of the case, it would be preferable to retain the name 
used in “ British Conchology ” to using a doubtful one. 
N. alderi Forbes. ‘‘ As a mere act of justice to the illustrious 
Swede, I feel myself compelled to substitute for alder7 the 
specific name g/aucina, by which Linné originally and 
undoubtedly designated and fully described this common 
European shell in his ‘Fauna Suecica.’” (Jeffreys, ‘Lightning’ 
Report, p. 30). 
Lamellaria Mont. Various names by various authors have 
been proposed or adopted for this genus, which was long left 
unnoticed, probably on account of its shell not being 
external or visible. Jeffreys says that ‘‘a great deal has 
