266 
Neritiiia spiniperda Morelet. 
Morelet series conchyliologiques II 1863. p. 121. pl. 6. fig. 3. 
Testa ovato-globosa, solida, rugis flexuosis interdum articulatis sulcata, olivacea, unicolor; 
spira involuta, obtusa, brevis, apiceerosa; sutura valde lacera ; anfr. ultimus superne compressus, 
plano-declivis, supra medium angulatus, angulo spinis brevibus, deciduis coronato; apertura 
modica coerulea vel albo-livida; area columellaris callosa, aurantio dilute maculata vel griseo- 
virescens; margo arcuatus, denticiilatus, deute mediano et infero majoribus. 
Operculum sulco bipartitum, basi emarginatum, arcuato-striatulum, pallide carneum, 
margine supero nigro limbato. 
Long. (Diam. maj.) 18, diam. (min.) 12 Mül. (Alt. 15, marg. col. 10, lat. areae 
5 Mill. ex icone). 
Nossi-be, Madagaskar, in fliessendem Wasser, E. Vesco. 
b) Mit besonderer Sculptur, ohne Dornen. 
Neritiiia leiitiginosa Eeeve. 
Reeve concb. ic. Bd. IX. pl. 25. fig. 110. 1855. 
Testa conoideo-globosa, solidiuscula, spira obtusa, anfractibus superne declivibus et 
subrude plicato-striatis, area columellari subcallosa; olivacea, punctis minutis albis, nigro 
umbratis, promiscue lentiginosa. 
Diam. ma.j. 14 O 2 , alt. 14. marg. col. 8. Mill. (ex icone). 
Inseln der Südsee. 
Flecken mit schwarzen nach vorn gerichteten Spitzen. 
c) Ohne besondere Sculptur und ohne Dornen. 
Neritina saiidaliiia Reel. 
Nerita (Clitlion) sandalina Recluz Revue zool. 1842 p. 76. — Reeve concb. icon. fig. 58. 
Testa semiglobosa, interdum subovata, sub sutura compresso-strangulata, fusco-nigra, 
tenuiter striata; apice convexo-obtuso ; apertura albido-lutescente, labio plano, margine vix 
arcuato et obsolete denticulato; labro patulo, superne depresso, linea nigra marginato. 
Long. (alt.) 18, larg. (diam. maj.) 21 Mill. 
Sandal-Bay., Lebuka, Viti-inseln, und Tabeite. 
Neritina circuiiiYoliita RecL 
Recluz Proc. Zool. Soc. 1842 p. 173. — Sow. thes. fig. 202, 203. — Reeve concb. ic. fig. 35. 
Testa globoso-subovata, dilute fulva, in roseo vertente, punctis luteolis antice lineis 
nigris marginatis marmorata, zonis nigris remotis (2) circumcincta; anfr. 2, nigromarginatis, 
supremo obtuso, decorticato; apertura albida, labio plano, superne callaso, antice ruguloso 
et in medio arcuatim emarginato. 
Long. 0,72, lat. 0,84, convex. 0,68 poll. 
Philippinen. Insel Negros an Steinen in einem Bergbach, Cuming. 
