532 



rotundato-obtusa, apice minimo, laterali; labio subobhquo, albido- 

 caerulescente, inferne dilatato, subconvexo, margine recto, acuto." 



Of an oval form, violet, scarcely striated; spire short, rather 

 obtuse ; outer lip slightly obtuse, blueish within ; columella semi- 

 circular, flatfish, straight, and smooth. Some specimens, marked 

 by M. Recluz as JV. Africana, which are lineated with purple, 

 but much worn, we take to be a variety of this. 



Smyrna. 



85. Neritina viridis (pi. cxvi. f. 229, 230), Linn., Syst. 

 Nat. p. 1254. 



N. testa, oblique ovaU, lsevi, viridi, albo maculata ; spira obtusa ; 

 apertura elbptica, labio externo antice producto ; columella semi- 

 circulari, plerumque tumida ; margine in medio crenulato et paulu- 

 hun arcuato. 



A small, pea- green, smooth, obliquely oval shell, with the outer 

 lip produced near the base, and the columella semicircular, gene- 

 rally swelled, slightly arcuated and crenulated in the centre. 



Sicily, the Antilles, Guadaloupe, and Cuba. 



86. Neritina Rangiana (pi. cxvi. f. 227, 228), Recluz, 

 Rev. Zool., 1841, p. 339. N. viridis, var. major, Bang. N. 

 pallida, Bisso. 



N. testa, N. viridi simillima, sed anfractu ultimo superne an- 

 gulato, testa plerumque majore, Uneis albis et rubris seriatim 

 variegata. 



Differing from N. viridis in the angularity of the last whorl, 

 and consequently of the outer bp at the upper part ; the outer 

 surface is ornamented by several series of red-edged white lines, 

 which are largest above the angle. 



Madagascar. Becluz. Dumaguete, Island of Negroes; on 

 stones in a small stream. Ciming. 



87. Neritina luctuosa (pi. cxvi. f. 231), Becluz, Rev. Zool., 

 1841, p. 317. N. rarispina, var. Becluz? N. siderea, Gould. 



N. parva, nitida, subglobosa, nigra ; spira exsertiuscula ; aper- 

 tura elbptica; columella angustata, lutea, plana. 



A small, smooth, subglobose shell, with an obtuse, but sbghtly 

 elevated spire, and a narrow, yellowish, flat columella, which is 

 nearly straight and smooth at the edge, but has above the centre 

 a rather prominent tooth. 



