198 



PEOF. E. VON MAETENS OJ5T THE SHELLS 



viridi-fuscis angulosis, ssepius in strigas latiores confluentibus, 

 infra maculis albis picta ; spira prominula, apice acutiuscula, 

 albida ; basi prope umbilicum latiusculnm perspectivuin radiatim 

 corrugata et angnlata ; apertura subrliombea, valde obliqua, fauce 

 margaritacea ; peristomate recto, obtuso, albido, margine basali 

 arcuato, margine coluinellari in callum linguiformem roseum 

 umbilici partem obtegentem expanse Diain. maj. 7 millim., 

 min. 5£, alt. 4 ; apert. diam. 3 millim., alt. 2. 

 Owen Island, 7 fathoms. Mindoro. 



A pretty little shell which, so far as I know, has not been 

 figured hitherto. At first sight it appears to be a young Rotella 

 vestiaria, L. (lineolata, Lam.) ; but even in the smallest speci- 

 mens of Rotella which I have at my disposal, which are of the 

 same size as this Isanda, the umbilicus is completely filled up by 

 the callosity, whereas in the largest specimens of the present 

 species the umbilicus is only covered halfway, and in smaller ones 

 gradually less, or even not at all. The general aspect of the shell, 

 however, is much more that of Rotella than that of the species 

 of Isanda hitherto figured (Adams, Gen. Moll. pi. 46. fig. 2; 

 Chenu, Manuel de Conchyliologie, i. p. 354, I. coronata ; Eeeve, 

 Conch. Icon. vol. xix. Cyclostrema, pi. iii. fig. 23, C. crenulifera). 



FlSSUEELLID J3 . 



248. Fissueella. Kueppelli, Sowerby, Conch. Illustr. fig. 75 ; 

 Reeve, Conch. Icon. vi. fig. 54. 



King Island, littoral. Red Sea, Mauritius. 



249. Scutum unguis, L., Ilanley, Ipsa Linn. Conch, p. 425, 

 pi. iii. fig. 4. 



Scutus corrugatus, Reeve, Conch. Icon. xvii. pi. ii. fig. 3. 



King Island, sublittoral. Mauritius, Singapore, Australia. 



PATELLIDiE. 



250. Patella vaeiegata, Reeve, Conchologia Systematica, 

 pi. 130. fig. 1 ; Conch. Icon. viii. pi. xvi. fig. 3G. 



S u 1 1 i van J aland. Red Sea, Mauritius, Nicobars, Java, Moluccas, 

 Australia. 



251. Patella, stell^foemis, Reeve, Conch. Syst. pi. 136. 

 fig. 3. 



Patella pentagona ( non Horn), Reeve, Conch. Icon. viii. pL xx. fig. 48 «-c. 



