MARSHALL: ALTERATIONS IN ‘BRITISH CONCHOLOGY.’ 
been written on the ‘historical part of this subject,” which 
he abridges, but acknowledges that he does not “claim 
any merit for endeavouring to elucidate it.” (‘B. C.’ vol. 
iv., pp. 234-5). However, Dr. Rudolph Bergh in the 
‘Challenger’ Report, and also in his Monograph on the 
Marseniade, has attacked the question boldly, and the 
result is an exhaustive account of the genus, which may 
now be said to be placed on a substantial basis. Shortly 
stated, the case stands thus—Lamellaria tentaculata was 
described by Montagu in the Trans. Linn. Soc. Lond. 
in 1811, and referred by him to his genus ZLamedllaria, 
His generic name, however, so resembled that of Lamznaria 
(a group of a/g@), as also the fact that Zamel/arza cannot 
be fitly applied to Montagu’s type, which was Pleure- 
branchus membranaceus, that in 1819 Leach advocated 
the disuse of the name and adopted that of JAZarsenza, 
which has been followed by some authors, and which will 
no doubt be now generally followed. 
Capulidze Fleming. Jeffreys has placed this family between 
Lamellaria and Velutina, instead of between /issuvella and 
Calyptrea, and says that Mr. Jabez Hogg, writing on the 
radula of the mollusca, states that the ‘dentition is seen to 
be almost identical with Ve/utina,’ 
Torellia vestita Jeff. There are no grounds for including 
this species in the British fauna; ‘a single dead specimen, 
not in good condition,’ is obviously insufficient. And 
although specimens were taken in the ‘Lightning’ and 
‘Porcupine’ expeditions between the Hebrides and Feerees, 
they were from stations nearer the latter group of islands. 
Cerithium perversum L. ‘From Professor Mobius’s notes 
and drawings, it appears that the animal of this species 
differs considerably from that of Cer7thium, particularly in 
respect of the foot and odontophore. I would consequently 
adopt the genus Z7zforis of Deshayes for this species.’ 
(Jeffreys, Ann. & Mag. Nat. Hist., June, 1870). 
J.C., viii., Apr. 1895. 
