NAVICELLA. 



Species 5. (Fig-, a, b, c, Mus. Cuming.) 



Navicella iii;;;ii I la Ms. Nav. testa snborMcidari,veH- 

 tricosd,! 'rticeo-nigro promisciie reticulata 



vel Marr'.'i ■', ■,, i-iilescetite, area columellari sub- 



angmtd, miicavd. 



The slightly okbicclak Navicella. Shell suborbi- 

 cular, veiitricose, fulvous, promiscuously reticulated 

 or blotched with olive-black, interior bluish, columel- 

 lar area rather narrow, concave. 



SowERBY, Tankerville Catalogue, App. p. 10. n. 1093. 



Hab. Philippine Islands ; Cuming. 



Chiefly distinguished by its light gibiious form and 

 loosely reticulated painting. 



Species G. (Mus. Cumiug.) 



Navicella porcellana. Nav. testa subtrigono-ovatii, 

 solidimndd, olivaceo-nigro dense I'eticulatd, intus c<e- 

 rulescente, margine subexpmiso, areii columellari de- 

 cUvi, ad latera nigra niaculatd. 



The porcelain Navicella. Shell somewhat triangu- 

 larly ovate, rather solid, closely reticulated with olive- 

 black, interior blue, margin rather expanded, colu- 

 mellar area slanting, blotched with black at the sides. 



Patella porcellana, Linnreus, Mus. Lud. Ulric. p. 689. 

 n. 411. 



Nerita porcellana, Chemnitz. 

 NaviceUa porcellana, Deshayes. 

 Patella Borbonica, Bory St. Vincent, 

 Crepidula Borbonica, De Eoissy. 

 Septaria Borbonica, De Ferussac. 

 Navicella elliptica, Lamarck. 

 Scandalinum pictum, Schumacher. 



Hab. Islands of Bourbon, Eodriguez, Mauritius, and 

 Madagascar; Eccluz. 



The articulated painting of this old Linnwau species is 



extremely thick-set, leaviug only minute triangular spac 

 of yellowish ground at irregular intervals. 



Species 7. (Fig. a, b, Mus. Cuming.) 



Navicella Cumingiana. Nav. tedd subtrigono-ovatd, 

 versus apiceni subrostratd, ad latera expansd, olivaceo- 

 luted, iiigrkante-fusco concenirice midulatd, intus ca- 

 rulescente, area columellari angustd, margine medio 

 suhproducto. 



Cuming's Navicella. Shell somewhat triangularly 

 ovate, slightly beaked towards the apex, expanded 

 at the sides, olive-yellow, concentrically waved with 

 blackish-brown, interior bluish, columellar area nar- 

 row, margin slightly produced in the middle. 



Recluz, MS. Mus. Cuming. 



Ilab. Philippine Islands. 



The painting of this fine species consists throughout of 

 concentric rings of irregidarly waved blackish-brown lines. 



Species 8. (Fig. a, b, Mus. Cuming.) 



Navicella variabilis. Nav. testa oblongo-ovali, con- 

 vexo-gibbosd, versus apicem subrostratd, concentrice 

 striata, sordide olivaced, nigra obscure retictdato-uu- 

 bratd, intus livida-cmruled, area columellari arcuatd. 



The variable Navicella. Shell oblong-ovate, con- 

 vexly gibbous, somewhat beaked towards the apex, 

 concentrically striated, dull olive, obscurely reticu- 

 lately shaded with black, interior livid blue, colu- 

 mellar area arched. 



Recluz, MS. Mus. Cuming. 



Hab. Philippine Islands. 



Of a very regular oblong-oval form, sculptured with a 



well-marked concentric striae, the network painting being 



obscui-ed by patches of shading. 



