LAMELLARIA. 467 
The followmg have not occurred to me alive :— 
N. sorprpa, Philippi. 
N. sordida, Brit. Moll. iii. p. 334, pl. 100. f. 5, 8; (animal) pl. P.P. f.3. 
N. Monraceut, Forbes. 
N. Montagui, Brit. Moll. iii. p. 336, pl. 101. f.3,4; (animal) pl. P.P. 
f. 4. 
N. pusitya, Gould. 
N. pusilla, Brit. Moll. ii. p. 341, pl. 100. f. 7. 
N. weicorpes, Johnston. 
N, helicoides, Brit. Moll. ii. p. 339, pl. 100. f. 6. 
? N. Kinet, Forbes and Hanley. 
N. Kingii, Brit. Moll. ii. p. 343, pl. 101. f. 1, 2. 
LAMELLARIA, Montagu. 
This genus has not more than one or two British species. 
The excellent Montagu, the discoverer of one of them, consti- 
tuted the genus Lamellaria to receive it. We are bound to 
adopt this generic term, though Coriocel/la would have been 
more significant, and place in it the L. tentaculata of Mon- 
tagu, and the L. haliotoidea of authors, which latter has 
been continually shifted from one genus to another. Both 
these species have, at times, been deposited by mistake in the 
exotic genus Sigaretus, after Lamarck, who had been misled 
by M. Cuvier having erroneously described the Helix halio- 
toidea of Linnzeus as Adanson’s Sigaretus, which has an ex- 
ternal shell. M. Blainville expressly formed the genus Corio- 
cella to receive M. Cuvier’s animal, which is undoubtedly 
identical with the L. perspicua, but Montagu’s appellation 
claims the priority as to time. As to the natural position of 
this genus, we must have recourse to that unerring magnet, the 
malacology of the animal, which consigns it to the vicinity of 
Murex. This situation, which has already been alluded to by 
authors, has been looked on by the older zoologists as unna- 
tural, but, ike the preceding genera, it can only be brought 
into the line of natural order by bemg deposited as an ano- 
malous Muricidal excrescence. 
2H 2 
