ZONITES. .SlTtS* 



I Do NATALK, Bcnoit. PL 51, figs. 76-78. 

 Openly umbilicated, discoidal, plane above, with very narrow 

 volutions, very minutely striulatc and with microscopic spiral 

 lines, subopaque, yellowish corneous; whorls 7, with channeled 

 suture, last whorl much larger, slopingly depressed to a subbasal 

 peripheral angle, aperture subtriangularly lunate. 

 Diam. K> mill. 



Sicily, Fisa, etc. 

 77. Uzielli, Issel = //. ViHtx?, Bonelli (non Mort.), is a synonym. 



II. POMELIANA, Bourg. PL 50, figs. 62-64. 



Umbilicus moderate, shell discoidal, plane above, thin, sub- 

 diaphanous, narrowly striate, greenish corneous; whorls 6, nar- 

 row, suture channeled. Diam. 10 mill. 



Bona, Algeria. 

 II. CIRCUMLINEATA, Kuster. PL 50, figs. 65-67. 



Widely umbilicated, subdiscoidal, thin, hyaline, with close 

 spiral strite above ; whorls 5, narrow, suture deeply impressed. 



Diana. 5'5 mill. 



Dalmalia. 

 Very distinct by its spiral sculpture. 



II. XAPATERI, Hidalgo. PL 50, figs. 68-70. 



Umbilicus moderate, shell thin, pellucid, somewhat shining, 

 almost smooth, corneous, suture rather deep; whorls 5J, narrow, 

 slowly enlarging, the last very obtusely angulated, base convex, 

 subplanulate. Diam. 10 mill. 



Belalcazar, Spain. 



Partakes somewhat of the characters of a Patula. 



II. ISSERICA, Letourneux. PL 50, figs. 71-73. 



Discoidal, with carinated periphery, planulate or slightly con- 

 cave above, more convex, with moderate umbilicus below, 

 fragile, subpellucid, narrowly striate, corneous above, becoming 

 milky white on the base ; whorls 6, suture impressed, whorls 

 narrow, slowly enlarging, the last much dilated, con vexly declin- 

 ing above, convex below, aperture angularly lunate. 



Diam. 14'5 mill. 



Kabylia. 

 II. SUBPLICATULA, Bourg. PL 50, figs. 74, 7">. 



Kallicr narrowly umbilicated, depressed, pellucid, shining, 



