Valvatella, Gray, 1857. 
(type) V. groenlandica, Chemn, ( = undu- 
lata, Sow), 
V. helicina, Fabr. 
V. olivacea, Brown {( = glauca, 
Moil.) 
V. cincta, Phil. ( = amabilis, Jeff.) 
Valvatella is here used since Leach first proposed Margarita in 1814 for 
a group of the Aviculidze, and had no right to shift his name to the 
Trochidze subsequently. Those who do not admit the binomialism of 
Chemnitz will perhaps prefer the name of V. wndulata, Sow., for the 
type species. 
Calliostoma, Swainson, 1840. 
(type C. conulus, LZ.) 
C. zizyphinum, L. 
C. occidentale, MWigh. and Ad. 
C, granulatum, Born. 
C. miliaris, Brocchit ( = mille- 
granus, Phil.) 
C. exasperatum, Penn. 
C. striatum, Z. 
C. Montagui, Wood. 
Cyclostrematide. 
Cyclostrema, Marryat, 1818. 
Marryat’s type seems to be C. cancellatum, avery different shell to 
our species; Delphinuloidea, Brown, is, as Jeffreys has remarked, 
‘‘heterogeneous”’; perhaps Z'ubiola, Adams, would be the best name to 
use, but the subject being rather uncertain, at present we use the old 
name, 
Haliotide. 
Haliotis, LZ. 
(type) H. tuberculata, Z. 
Pleurotomariide. 
Scissurella, D°Ord., 1823. 
(type S. costata, D’Orb.) 
S. crispata, Fleming. 
