STOMATELLA. 15 



obliquely striated, transversely lirate, the lira? unequal, some more 

 prominent and nodulose ; umbilical tract impressed ; columella 

 acute, aperture suborbicular. 



A well-defined thin brown species, with transverse elevated 

 nodulose line and with the interior of the aperture vividly iridescent. 

 (Ad., P. Z. S. 1854, p. 133.) 



Habitat unknown. 



S. dori,e Issel. PI. 51, figs. 6, 7, 8. 



Shell fragile, thin, orbiculate-conoid, much depressed, imperforate, 

 transversely minutely striate-costulate, whitish painted with irregular 

 chestnut spots ; spire obtuse ; whorls 4, convex, separated by im- 

 pressed sutures ; first narrow, slowly increasing, the last large, rather 

 convex above, rounded beneath ; aperture very oblique, large, sub- 

 rotund ; peristome interrupted, acute ; columellar margin a little 

 reflexed at the insertion ; throat a little pearly. 



Alt. 2f, diam. 4J, diam. apert. 21 mill. (Issel.) 



Strait of Suez. 



Savigny, Descript. de l'Egypte, Coq., t. v, f 8. — Stomatella doriaz 

 Issel, Mai. Mar Rosso, p. 228, 1869. 



S. scitula H. Adams. PI. 53, fig. 93. 



Shell ear-shaped, thin, encircled by numerous unequal riblets, 

 whitish ; spire prominent ; suture distinct ; whorls 4, convex ; aper^ 

 ture very oblique, suboval ; columella acute, revolute ; pearly inside. 



Alt. 3 2, diam. 5, long. 7 mill. (Ad.) 



Red Sea. 



S. scitula Ad., P. Z. S. 1872, p. 10, t. 3, f. 4. 

 (Group of S. mariei Crosse.) 

 S. mariei Crosse. PI. 53, figs. 68, 69, 70, 71, 72. 



Shell depressed, thin, with small, erect, acute spire ; color a delicate 

 pinkish fawn, clouded and mottled with reddish-brown, articulated 

 on the spirals with white spots; the base with radiating whitish 

 flames. Surface scarcely shining, sculptured with separated nar- 

 row spirals above, and very numerous finer ones covering the spaces 

 between them ; stride of growth excessively close and fine, scarcely 

 visible. The principal spiral threads are articulated white and 

 pink, and a trifle crenulated ; base smoother, with separated linear 

 spirals. The spire is short, its outlines concave ; apical whorl 

 corneous, projecting, rounded; following whorls of the spire lirate, 



