527 



66. Neritina bicolor (pi. cxv. f. 204), Recluz, Pro. Zool. 

 Soc, 1813, p. 200. 



N. testa N. interrupts simili, sed solidiore, lineis continuis, 

 apertura alba, columella tumida. 



No essential difference can be traced between tills species and 

 N. inlerrupta, excepting that it is a more solid shell, and lias the 

 columella tumid. The aperture is white, and the greenish lines 

 are less distinct, and not interrupted. 



Island of Luzon ; on stones in a mountain stream. Cuming. 



67. Neritina squamosa (pi. cix. f. 26, 27), Recluz, ? 



N. testa oblique subquadrata, tuberculis trigonis luteis rugulata, 

 inter tubercula rubra griseo trifasciata ; spira exsertiuscula, anfrac- 

 tibus angulatis, superne subplanulatis ; apertura obliqua ; labio ex- 

 terno subrotundato ; columella alba, margine crenulato, in medio 

 dentibus magnis duobus obtusis. Operculo cinerascente. 



Obliquely quadrate, with triangular yellow tubercles, reddish, 

 with three blackish bands between the tubercles ; the whorls are 

 angulated, rather flat above the angles ; the columella has two 

 large, rather blunt teeth near the middle of the edge, with small 

 crenulations between them. 



Island of Negroes ; on stones in a mountain stream. Cuming. 



68. Neritina circumvoluta (pi. cxv. f. 202, 203), Reel.— ? 



N. testa globosa, subleevigata, fulva, maculis minutis sparsa, 

 nigro trifasciata; spira parva, apice obtuso, anfractibus subrotun- 

 datis, ad suturam tumidis ; apertura obliqua, albida ; labio interno 

 subplanulato, superne calloso, ad marginem dentibus duobus ob- 

 tusis et crenulis minutis. Operculo nigro. 



Of a roundish form, with very little of the spire visible ; of a 

 light brownish colour sprinkled with white and blackish spots, 

 with three black bands, one at the suture, near which, when full- 

 grown, the whorl is swelled ; columella flatfish, callous near the 

 suture, with two blunt teeth, and minute crenulations on the 

 margin. 



Island of Negroes ; on stones in a mountain stream. Cuming. 



69. Neritina avellana (pi. cix. f. 9, 10), Recluz, Rev. 

 Zool, 1842, p. 76. 



"N. testa subglobosa, crassiuscula, roseo-violacea, maculis albis 

 anterius nigro marginatis, sagittatis, crebris, 3- seu f-fasciata; 

 sutiu-a lactea, rnaculis nigris arcuatis altcrnis lat& cincta ; spira 



3 y 2 



