PHYLLOBRANCHIA. TURBONIDS. 181 
pale lemon ; greenish, banded with red-brown ; pale orange ; 
reddish brown, lineated with pale orange; fuscous, banded 
with dirty orange; red, tinctured or tinted with pale red, and 
banded with fuscous or deep orange. 
Colour of the animal. The foot, head and tentacula pale 
yellowish. The operculum painted with an intense testaceous 
colour. Height 3 of an inch. 
Genus 80. NERITINA. 
Neritina Lamarck. 
Theodoxis De Montfort. 
Testa anfractu basilari maximo. Apertura ad dextram, 
mediam et sinistram semicircularis. Pars posterior et peri- 
trema recta. 
Animal. Tentaculis elongato-tereti-conicis, ad basin exterio- 
rem oculigeris. 
Shell with the basal whorl the largest. Aperture towards 
the right, the middle, and the left, semicircular. The hinder 
part with the peritreme straight. 
Animal. Tentacles elongated, roundly conic, bearing the 
eyes exteriorly at their base. 
NERITINA EUROPA. 
N. testa glabra, flava, limonia, purpurea, nigra et violacea, 
variegata et maculatai; peritremate albo. 
Nerita fluviatilis, List. Conch. t. exli. f. 38. et t. ceeccevil. 
1543: 44 = Pet. Gazotocist. 33° Gualt. Test. tows fo, UL, 
inferné ad sinistram ; D’ Argenv. Conch. t. xxvii. f. 3; Fa- 
vanne, Conch. t. \xi. f. 8, 3, 4, 17, 20; Miill. Verm. 194. 
381; Schriter, Flussconch. t. v. f. 5, 6, 7, 8, 9 et 10; Da 
Costa, Brit. Conch. t. iii. f. 8 ; Pult. Cat. Dorset. 50. t. xvi. 
f. 17,18; Donov. Brit. Shells, t. xvi. f. 2; Mont. Test. 
Brit. i. 470; M. & R. Trans. Iinn. Soe. vin. 225 ; Flem. 
Edinb. Encycl. vii. ; Lam. Hist. Nat. des Anim. sans Vert. 
vi. partie i. 188; Dill. Desc. Cat. 187; Turt. Conch. Dict. 
127 Sp 7 
