ZONITES. 143 



H. TRANSYLVANICA, Clessin. PI. 47, figs. 62-64. 



Imperforate, plane above, convex below, very lightly irregu- 

 larly striulate, shining, diaphanous, spire not elevated ; whorls 

 5-6, the earlier ones narrow, the last nearly three times the width 

 of the penultimate, umbilical region impressed. Diam. 4 mill. 



Transylvania. 



Unfigured Species. 



II. PSEUDODIAPHANA, Coutagne. Southern France. 



H. TENEBRARTA, Bourg. Spain, So. France. 



H. MORTELLA and H. CAVARELLA, Servain. Bosnia. 



H. AMELA and ? H. OECOSCIA, Bourg. Carniola, Croatia, Bosnia. 



III. Group of H. hydatina, Rossm. (Mediterranea). 



H. EUD^DAL^A, Bourg. PI. 4*7, figs. 65-67. 



Very narrowly perforate, bluish white, pellucid, very slightly 

 striulate ; whorls 6, regularly enlarging, suture deep, subplanate 

 below. Diam. 7 mill. 



Greece. 

 II. SUBEFFUSA, Bottger. PL 47, figs. 68-70. 



Xarrowly perforate, horny white, shining ; whorls 4, slowly 

 enlarging, suture linear, surface distinctly striulate, subplane 

 below, last whorl nearly double the width of the penultimate. 



Diam. 3'5 mill. 



Caucasus. 



First described by Bottger as H. effusa, a name preoccupied 

 by Pfeiffer. 



Var. DEPRESSA, Bottger. Fig. 70. 



Shell smaller, whorls more depressed, the last with obsoletely 

 angulated peripheiy. 



H. HYBLENSIS, Parreyss. PI. 47, figs. 71-73. 



Narrowly perforate, In-aline, vitreous, vQry slightly striulate; 

 whorls 5, regularly slowly enlarging, with distinct linear suture, 

 aperture widely lunate. Diam. 5 mill. 



Sicily. 



