PSAMMOTELLA.— Plate I. 



Species 4. (Mus. Cuming.) 



PsAMMOTELLA RupPELLIANA. Psani. testd elongato- 

 transversd, solidiusculd, suboblique contortd, inat/ui- 

 laterali, dense irregulariter striata, albidd, Uvido-mo- 

 laceo fasdatd, postice pallide biradiatd, epidermide 

 decidud prope marginem indutd, latere antico rolitn- 

 dato, postico oblongo-truncato. 



Ruppell's Psammotella. Siiell elongately transverse, 

 rather solid, rather obliquely twisted, inequilateral, 

 densely irregularly striated, whitish, banded with 

 livid violet, posteriorly faintly two-rayed, covered 

 near the margin with a deciduous epidermis, anterior 

 side rounded, posterior oblong-truncated. 



Hob. Red Sea; RuppeU. 



A rather solid species, of oblong transverse growth, 



rather contorted in the posterior direction. 



Species 5. (Mus. Cuming.) 



Psammotella ambigua. Fsam. testa ovato-transversd, 

 inaquilateraU, irregulariter rugoso- striata, sordide 

 ciolaced, lateribus supenie declivibus, antico subanguste 

 rotuudato, postico snbcompresso producto, d<dtide trun- 

 cato-rotundato. 



The doubtful Psammotella. Shell ovately transverse, 

 inequilateral, irregularly roughly striated, dull violet, 

 sides sloping at the upper part, anterior rather nar- 

 rowly rounded, posterior somewhat compressly re- 

 duced, then truncately rounded. 



Deshayes, MS., Mus. Cuming. 



Hah. ? 



Chiefly distinguished by the posterior side being con- 

 spicuously compressly produced. 



Species 6. (Mus. Cuming.) 



Psammotella subkadiata, Fsam. testd ovato-trans- 

 versd, tenui, conveximciild, irregulariter riigoso-striatd, 

 molascente, pallide albo-radiatd, epidermide tenui ver- 

 sus marginem indutd, lateribus superne declivibus, an- 

 tico subanguste rotundato, postico subcompresso, trun- 

 cato-rotundato . 



The faintly rayed Psammotella. Shell ovately 

 transverse, thin, rather convex, irregularly roughly 

 striated, pale violet, faintly white-rayed, covered with 

 a thin epidermis, sides sloping at the upper part, 

 anterior rather narrowly rounded, posterior a little 

 compressed, truncately rounded. 



Deshayes, MS., Mus. Cuming. 



Hab. San Nicolas, Island of Zebu, Philippines ; Cuming. 



Of lighter substance than the preceding species, with 

 the posterior side shorter. 



Species 7- (Mus. Cuming.) 



Psammotella oblonga. Fsam. testd elongato-trans- 

 vej'sd, tenui, subaquilaierali, irregulariter nide striata, 

 purpurascente-violaced, epidermide tenui decidud prope 

 marginem indutd, lateribus subaqunliter rotundatis. 

 The oblong Psammotella. Shell elongately transverse, 

 thin, nearly equilateral, irregularly rudely striated, 

 purplish-violet, covered towards the margin with a thin 

 deciduous epidermis, sides nearly equally rounded. 

 Deshayes, MS., Mus. Cuming. 



Hab. ? 



A light purple-violet shell, di.=tinguished by its elon- 

 gately oblong form, with the sides nearly equally rounded. 



