88 KELLIAD A. 
The undermentioned references have not occurred on the 
South Devon coasts. 
L. sprnirera, Montagu. 
LL. spinifera, Brit. Moll. ii. p. 49, pl. 35. f. 1. 
L. teucoma, Turton. 
L. leucoma, Brit. Moll. u. p. 57, pl. 35. f.2, as L. lactea. 
L. FeRRUGINOSA, Forbes. 
L. ferruginosa, Brit. Moll. ui. p. 60, pl. 34. f. 1, magnified. 
L. pivaricata, Linnzeus. 
L. dwwaricata, Brit. Moll. u. p. 52, pl. 35. f. 3. 
KELLIAD A. 
This group of minute bivalves has lately been distributed 
in five genera, Kellia, Montacuta, Galeomma, Lepton, and 
Turtonia, but the four latter are so generically discordant 
with Kellia (proper), the type, that we may say they have no 
connection with it. We have therefore, without hesitation, 
removed Galeomma and Lepton to the Arcade; Montacuta, 
for one of its species, to the new family of the Montacutide ; 
and Turtonia, for its only species, to another new family, the 
Turtoniade ; wnder which heads our reasons for these changes 
will be found. The lately acquired knowledge derived from 
an examination of all the Leptons except L. Clarkie, umpera- 
tively requires a family rectification ; they have not the vivi- 
parous and tubular specialties of Kellia, and exhibit such 
other different characters and structure as fully to sanction 
the junction of Lepton with Galeomma, and the removal of 
both to the Arcade. 
Again, with respect to Montacuta, we have relieved it of 
one of its late members, by consigning the MW. didentata to the 
Anatinide, as by the testaceous moveable ossicle it certainly 
belongs to that family, which we confidently think will obtain 
another recruit in M. ferruginosa ; that is, if it should be found 
to have the characteristic ossicle of the tribe. The Kelliade, 
therefore, in our method, consists of only one genus, Kellia 
(proper), with two species. 
