N E R I T I N A. 



Plate XXYIL 



Species 119. (Fig. a, h, Miis. Cuming.) 



Neuitina SiauiJORENSls. Ner. teUd oblonyo-ovald, spird 

 intortd, mij'ractibus suhangusth, compressis, lavihns, 

 area colnmeUari lata, wargine contliiuo ; sordide cor- 

 ned, nit/ro obscure reticulata, Interdum roseo-radiutd. 



The Siquijor Neritina. Shell obloug-ovate, spire 

 twisted inwards, whorls rather narrow, compressed, 

 smooth, columellar area broad, with the margin con- 

 tinuous ; dull horny, obscurely reticulated with black, 

 sometimes pink-rayed. 



Recluz, Pro. Zool. Soc. 1843, p. 198. 



Hub. Island of Siquijor, Philippines (in a small stream) ; 

 Cuming. 



A narrow compressed species, with a broad columellar 

 area, having a raised edge continuous with the margin of 

 the aperture. 



Species 120. (Fig. a, b, Mus. Cuming.) 

 Neritina Guadianensis. Ner. testd obhnijo-conmded, 

 solidd, spird snlprominuld, obtusd, aufractibm superne 

 declivibus, iii/ertie gibbosis, avfractu ultimo antice de- 

 Hcendenie, area colmnellari callosd ; sordid^ albd, 

 griseo-uigro dense reticulata. 

 The Guadiana Neritina. Shell oblong-conoid, solid, 

 spire rather prominent, obtuse, whorls slanting round 

 the upper part, gibbous round the lower part, last 

 whorl descending in front, columellar ai-ea callous ; 

 dull wliite, densely reticulated with greyish-black. 

 JIoRELET, Moll, du Portugal, p. 97. pi. 9. f. 3. 

 Hab. Guadiana, Portugal. 



A solid Natica-Yiks species, witli the last whorl un- 

 usually descending in front, closely reticulated with grey- 

 black.' 



Species 121. (Pig. a, b, Mus. Cuming.) 

 Neritina reticulata. Ner. te-itd ovatd, spird sub- 

 exserid, anfractibus subangustis, radiatim sulco-striatis, 

 area colmnellari declivi, subexcavatd ; lacteo-albd, in- 

 tense nigro laxe reticulatd. 



The reticulated Neritina. Shell ovate, spire slightly 

 exserted, whorls rather narrow, radiately groove- 

 striated, columellar area slanting, slightly excavated ; 

 cream-coloured, openly reticidated with jet-black. 



SowERBY, Pro. Zool. Soc. 1832, Couch. lUus. f. 2. 



Hab. Lord Hood's Island (on saud in brackish water) : 

 Cuming. 



Distinguished by a loosely reticulated pattern of jet- 

 black upon a cream-coloured ground. 



Species 122. (Fig. a, b, Mus. Cuming.) 



Neritina Danhbialis. Ner. testd ovatd, spird vix ex- 

 nertd, anfractibus snbai/gustis, lavibus, ared columet- 

 Inri excavato-declivi ; albidd, strigis nigricantibus 

 Jtexuosis undique tramversim pictd. 



The Danubian Neuitina. Shell ovate, spire scarcely 

 exserted, whorls rather narrow, smooth, columellar 

 area excavately slanting ; whitish, painted through- 

 out with transverse flexuous black streaks. 



Ziegler, Deshayes Anim. sans vert. vol. viii. p. .592. 

 Neritina serratiliueata, Ziegler. 



Hab. The Danube. 



Painted transversely with Hexuous black lines, ranged 



throughout with 2;reat regularity. 



Species 133. (Fig. a, b, Mus. Cuming.) 



Neritina violacea. Ner. testd ovatd, spird vix exsertd, 

 anfractibus subangustis, lavibtis, area colmnellari plano- 

 dnTn-ibus ; violacea, lineis griseis acute undatis dense 

 nebulatis. 



The violet-tinged Neritina. Shell ovate, spire scarcely 

 exserted, whorls rather narrow, smooth, columellar 

 area flatly slanting; violet-tinged, thickly clouded 

 with zigzag grey lines. 



Morelet, Moll, du Portugal, p. 92. pi. 9. f 1. 



HaL. Coimbra, Portugal. 



A rather narrow violet-tinged species, densely clouded 



throughout with sharply zigzag grey-black lines. 



January, 1856. 



