NERITINA. 



Plate X. 



Species 44. (Fig. a, b, Mus. Cuming.) 



Neritina SANGUiNEA. Ner. tentd ovatd, spird obfiixd, 

 vij) exserld, aii/rac/lbus superne concavo-plmmlis, sit/j- 

 angustis, (ortuoso-striuiis, ared columella ri laid ; oli- 

 raceo-lided, niijro reticiilato-martuoratd, ared columel- 

 lari intense sauffuiiied. 



The blood-stained Neritina. Shell ovate, spire ob- 

 tuse, scarcely exserted, whorls coticavcly flattened 

 round the upper part, rather narrow, tortuously stri- 

 ated, columellar area broad ; olive-yellow, reticulatcly 

 mottled with black, columellar area deep blood- 

 stained. 



SowEiuiY, Thesaurus Conch, part 10. p. .513. 



Hii6. New Ireland (ou stones in mountain streams) ; 

 Iliads. 



-V dark reticulatcly mottled shcl 

 luid the columellar area. 



lood-staincd 



Species 43. (Fig. n, b, Mus. Cuming.) 



Nkiutina asi'ERULAta. Ner. testa depresso-ovutd, siillns 

 coiicard, spird pand, vix exserld, anfructihus sitliai/ffiis- 

 fis, versus aperturam.ejpansis, undlfpiemiiinte crispiito- 

 corr/iffatis, ared columellari lata, declivi, aperturd 

 ampld, expansd ; olioaceo-fuscescente, nigro reticulata, 

 aperturd carulescente, ared columellari rujo tinctd. 



The kougiiish Neritina. Shell dcpressly ovate, con- 

 cave beneath, spire small, scarcely exserted, whorls 

 rather narrow, expanded towards the aperture, every- 

 where minutely crispatcly wrinkled, columellar area 

 broad, slanting, aperture large, expanded ; olive- 

 brown, reticulated with black, aperture bluish, colu- 

 mellar area tinged with red. 



Recluz, Sowerby, Thesaurus Conch, part 10. p. .513. 



Hall. Island of Luzon, Philippines (on small stones in a 

 rivulet) ; Cumiug. 



Curiously sculptured throughout with line crisply 

 wrinkled strire, and painted with faint openly reticulated 

 network of black lines upon an olive-brown ground. 



Species 46. (Fig. a, b, Mus. Cuming.) 

 Neuitina BEUGUiEra. Ner. testa oblomjo-ovatd, depressd, 

 spird pared, ohtusd, vix exsertd, anfractibus suhauyns- 

 tis, superne plano-mpressis,Jlexuoso-striatis, ared co- 

 lumellari lata, ampld; intense carbonarid, ared colu- 

 mellari vivide rufd. 

 Brugl-iebe's Neritina. Shell oblong-ovate, depressed, 



spire small, obtuse, scarcely exserted, whorls rather 

 narrow, flatly impressed round the upper part, flexu- 

 ously striated, columellar area broad, large; dark 

 coal-black, columellar area deep red. 

 Recluz, Sowerby, Thesaiu-us Conch, part 10. p. .513. 



pi. 114. f. 1.59. 

 Hab. New Ireland (on small stones in a rivulet) ; Hinds. 

 Plainly distinguished from N. canalis, to which it is the 

 nearest allied species, by the lip, on joining the body- 

 whorl, not being raised into a ridge. 



Species 47. (Mus. Cuming.) 



Nerita gagates. Ner. tesld subdepresso-globosd, solidd, 

 spird vix exsertd, anfractibus superne concavo-impressis, 

 delude rofmidatis, Jlcxuoso-striatis, ared columellari 

 ampld, callosd ; olivaceo-nigrd, lineis tmdaiis hileis 

 undupie pallide notatd. 



The agate Neritina. Shell subdepressly globose, solid, 

 spire scarcely exserted, whorls concavely impressed 

 round the upper part, then rounded, flexuously stri- 

 ated, columellar area large and callous; olive-black, 

 marked throughout with faint yellowish zigzag lines. 



Lamarck, Aniiu. sans vert. vol. viii. p. 570. 



llab. Siuuatra (on stones) ; Cuming. 



A solid callous species, of very dark olive-colour, which, 



on close examination, appears to be marked throughout 



with close-set zigzag yellow lines. 



Species 4S. (Fig. a, b, Mus. Cuming.) 

 Nerita punctulata. N'er. tesld depresso-ovatd, subtus 

 coiicavd, expansd, spird parvd, fere obsoletd, anfractibus 

 late convexis, lavibus, ared columellari ampld, leviter 

 conci'xd; nigricanie-olivaced, punctis luteis undique 

 asprrsd, aperturd carulescente, ared columellari pal- 

 lide sumjuineo-tinctd. 

 The dotted Neritina. Shell depressly ovate, concave 

 and expanded beneath, spir-e small, almost obsolete, 

 whorls broadly convex, smooth, columellar area large, 

 slightly convex ; blackish-olive, sprinkled throughout 

 with yellow dots, aperture bluish, columellar area 

 faintly blood-tinged. 

 Lamarck, Anim. sans vert. vol. viii. p. 584. Euc. Metiio- 



dique, pi. 455. f. 2. 

 Ilab. Jamaica, Guadaloupe. 



A rather depressly expanded species, charac'teristically 

 sprinkled tiu-oughout with yellow dots upon an olive- 

 black ground. 



October, 1855. 



