NAVICELLA. 



Species 34. (Fig. a, b, c, Mus. Cuming.) 



Navicella clypeolum. Nav. testa subquadrato-ovatd, 

 teiiuiculd, expansa, coiweiitrice deitse striata, lutescetite 

 fitsco reticulaiim varieyatd, satm-aie fimco interduw 

 radiatd, ajiice rosea, area coliimellari. curvatd. 



The little - shield Navicella. Shell somewhat 

 squarely ovate, rather thin, expanded, concentrically 

 densely striated, yellowish, reticulately variegated 

 with brown, sometimes rayed with dark lirovvn, apex 

 rose, columellar area curved. 



Kecluz, MS. Mus. Cuming. 



Easdem varietates. Navicella atra and radiata. Reeve, 

 in Conch. Syst. 



Hah. Philippine Islands (in mountain-streams on stones) ; 

 Cuming. 



A light squarely ovate variegated species, with a cha- 

 racteristic rose apex. 



Species 25. (Fig. a, h, Mus. Cuming.) 

 Navicella pblchella. Nav. testa compressi ovatd, 

 dense coiicentrice striatd, nigra, versus marginem nigro 

 et Ititeo pulclire tessellatd, area columellari parvius- 

 culd. 

 The pretty Navicella. Shell compressly ovate, densely 

 concentrically striated, black, towards the margin 

 prettily tessellated with black and yellow, columellar 

 area rather small. 

 Hab. ? 



A black compressly ovate shell, neatly tessellated 

 wards the margin with yellow. 



to- 



Species 26. (Fig. a, b, Mus. Cuming.) 

 Navicella eximia. Nav. testa suboblongo-quadrata, 

 versus apicem contracfd, coneentrice dense striatd, 

 apice rostrato, lutesci'iiic, olii-nceo-iiigro tessellntd et 

 interdum imbeculatd, inlii't pilh,ci,h)-carulescente, area 

 columellari latiusculd, niirniilio-nifo tinctd. 

 The delicate Navicella. Shell somewhat oblong- 

 square, contracted towards the apex, concentrically 

 densely striated, apex beaked, yellowish, tessellated 

 and sometimes clouded with olive-black, interior 

 transparent blue, cohnnellar area rather broad, tinaed 

 with orange-red. 

 Ilah. Ceylon ; F. Layard. 



A semitransparent tessellated species, marked with a 

 characteristic pattern and colour. 



Species 27. (", h, r, Mus. Cuming.) 

 Navicella tessellata. Nav. testa amjuste ovatd, tenui- 

 culd, dense coneentrice striatd, apice subrostrato, lutes- 

 cente, olivaceo-nigro promiscne tessellatd et variegatd, 

 apice rosacea, ared columellari curvatd. 

 The tessellated Navicella. Shell narrowly ovate, 

 rather tliin, densely concentrically striated, api-x 

 rather beaked, yellowish, promiscuously tessellated 

 and variegated with olive-black, apex tinged with 

 rose, columellar area arched. 

 Lamaeck, Anim. sans vert. vol. viii. p. .56-1.. 

 Nab. Philippine Islands (in mountain-streams on stones); 

 Cuming. 

 or a narrower oblong form than cither of the preceding 

 species of the same type, and more promiscuously tessel- 

 lated. 



