172 ZONITES. 



Var. BOREALTS, Clessin. Figs. 29, 30. 



Shell depressed, spire but little elevated, suture deep.. 

 Diam. 6 mill. 



Northern Sweden. 

 Var. PARISIACA, Mabille. Figs. 31, 32. 



France, Norway. 



Un figured Species. 



II. OLTISTANA, Fagot. Spain, Hungary. 



II. NORVEGICA, Esmark. Norway. 



H. LOANA, Gredler. China. 



Section NAUTILINUS, Monsson, 1872. 

 H. CLYMENE, Shuttle w. PI. 53, figs. 33, 34. 



Minute, widely umbilicated, depressed, discoidal, thin, smooth, 

 diaphanous, brownish corneous, a little shining, spire immersed ; 

 whorls 3, rapidly increasing, convoluted, the last large, inflated, 

 very slightly deflected in front. Diam. 2 mill. 



Teneriffe. 



Its habit is different from the Hyalinse generally, living in wot 

 moss, associated with Physa, Ancylus, Hydrocena, etc. 



Section CONULUS, Fitzinger, 1833. 



Dr. Kobelt, in considering the Conulus section so numerously 

 represented in Japan, has proposed three groups, distinguished 

 as follows : 



I. DISCOCONULUS. Contains depressed forms, with narrow 

 whorls and no carina. H. sinapidium, H. ampla, of Japan, II. 

 epiriplana of China, and H. Gundlachi of Cuba. 



II. EUCONULUS. The bullet-shaped species, withgut keel or 

 only a slight one. H. fulva of Europe, H. pupula, pustulina, 

 phyllophila and incerta. Most of the Asiatic and American 

 species belong here. 



III. TROCHOCONULUS. Usually trochiform, plainly keeled. //. 

 acutangula, H. labilis, H. tenera and H. obtusangula of Japan are 

 examples (Sitzb. Berlin, 82, 1883). 



I have not adopted these divisions, mainly because of the 

 variability of II. fulva, the best known species, extreme forms 

 of which might enter the third group, whilst the type belongs to 

 the second. 



