138 CLASS III. GASTEROPODA. ORDER VII. PECTINIBRANCHIATA. 
Pl. CCL. Fig. 19. 
NERITINA MELEAGRIS, Lamarck, Anim. sans vert., new edit., vol. viii. 
p. 575. Sowerby, Conch. Illus. Cat., No. 19. p. 2. Wood, Index 
Test. Supp., pl. 8. f. 18. 
Nerita pulchella, Wood. 
Pl. CCI. Fig. 20. 
Neritina corona, Lamarck, Anim. sans vert., new edit., vol. viii. p. 571. 
Chemnitz, Conch., vol. ix. pl. 124. f. 1083 and 1084. 
Nerita corona, Linnzus. 
Clithon corona, De Montford. 
Pl. CCI. Fig. 2). 
Neritina punctuvata, Lamarck, Anim. sans vert., new edit., vol. viii. 
p. 584. Encyclopédie Méthodique, pl. 455. f. 2. 
Pl. CCI. Fig. 22. 
NeritTINA CANALIS, Sowerby, App. to Tankerville Catalogue, p. 1]. 
Wood, Index Test. Supp., pl. 8. f. 17. 
Pl. CCL. Fig. 23. 
NeERiITINA SEMI-conica, Lamarck, Anim. sans vert., new edit., vol. viii. 
p. 574. Chemnitz, Conch., vol. ix. pl. 124. f. 1087. 
Ce NERITA, Linneus. 
Testa solida, semiglobosa, subtis planiuscula, extus vel levigata, vel 
costata, spird brevi; umbilico nullo; apertura semirotunda, intro 
plerumque crenata ; columella ampla, septiformi, seepius denticuiata, 
margine rotundato, labro vel simplici, vel crenulato. Operculum 
testaceum, appendiculatum. 
Linneus is accounted to be the author of the present genus ; but the 
