NERITINA. 



Plate XXII. 



Species 9-i. (Fig. a, b, Mus. Cuming.) 



Neritina chlorostoua. Ner. tedd globosd, tenui, tu- 

 midiusculd, spird sulexsertd, anfractihus superne im- 

 pressis, delude rotundaiis, substriatis, area columeUari 

 declivi; interne ferritgineo-grised, albipmiclatd, ad sii- 

 turam vittaid, aperturd luted. 



The yellow-mouthed Neritina. Shell globose, thin, 

 rather swollen, spire slightly exscrLed, whorls im- 

 pressed round the upper part, then rounded, sub- 

 striated, columeUar area slanting; dark rusty-grey, 

 dotted with white, filleted at the sutures, aperture 

 yellow. 



Huoderip, Pro. Zool. Soc. 1832, p. 201, 



Hub. Tahiti (at the mouth of a small stream, at times 

 covered with salt water) ; Cmning. 

 Of somewhat light structure, dark grey, thickly studded 



uith minute white dots, with the aperture yellow. 



Species 95. (Pig. a, b, Mus. Cuming.) 

 Neritina triserialis. Ner. tesld subglobosd, spird vix 

 exsertd, anfractlbus mpenie subplanatis vel decUvibus, 

 area columeUari angustd, callosd ; tdgricanle-grised, 

 raaculis albidis aspersdju seriebus tribus distinctioribus. 

 The triserial Neritina. Shell subglobose, spire scarcely 

 exserted, whorls rather flattened round the upper 

 part, or slanting, columellar area narrow, callous; 

 dark grey, sprinkled with white spots, more distinct 

 in three rows. 

 SoWERBY, Thesaurus Conch, part 10. f. 521. 



Hub. ? 



A dark grey white-spotted shell, in which the spots in- 

 dicate, more or less distinctly, three interrupted bands. 



Fig. 'JO. (Ml 



ng-) 



Species 97. (Fig. a, b, Mus. Cuming.) 



Neritina cuprina. Ner. testa oblongo-conicd, spird tur- 

 binutd, anfruclibus superne impressis, deinde convexis, 

 oblique striatis, area columeUari subcallosd ; nigrd, 

 lineis uudutis luteis pallidi notatd, ared columeUari 

 aurantio tiiictd. 



The copper Neritina. Shell oblong-conical, spire tur- 

 binated, whorls impressed round the upper part, 

 then convex, obliquely striated, columellar area rather 

 callous ; black, marked with very faintly indicated 

 zigzag lines, columellar area tinged with orange. 



Recli'z, MS., Mus. Cuming. 



Uab. ■ ? 



A well-deliued conically turbinated black species, marked 

 with faintly indicated waved yellow lines, which impart a 

 coppery hue to the shell. 



The fine specimen here figured proves to be a variety of 

 A', communis, represented nl I'l. .\ IX. 



Species 9S. (Fig. a, b, Mus. Cuming.) 



Neritina apiata. Ner. testd globoso-turbinald, tenuis- 

 simd, spird parviusculd, anfractibus superne planulatis, 

 delude rotundaiis, subangustis, ared columeUari sub- 

 uiupld ; cinereo-grised, punctis nivosis trausversis as- 

 persd. 



The bee-marked Neritina. Shell globosely turbinated, 

 very thin, spii'c rather small, whorls flattened round 

 the upper part, then rounded, rather narrow, colu- 

 mellar area rather large ; ash-grey, sprinkled with 

 snow-white transverse dots. 



Uecllz, Sovverby, Thesaurus Conch, part 10. p. 518. 



Ilab. Island of Negros, Philippines (on stones in a moun- 

 tain stream) ; Cuming. 

 An unusually light turbinated species, of distinct ty])ical 



character, dull grey sprinkled with small transverse whitish 



flakes. 



