ZONITES. NIVERSITY 193 



Yur. INTEBMISSA, Mousson. Fig. 47. 



Whorls more compressed, flattened below. 



II. PONTICA, Bottger. PL 58, figs. 48-50. 



Narrowly umbilicated, thin shining, dark fulvous corneous, 

 whitish below; whorls 6^, striate above, with a sutural margin, . 

 smooth below, narrow, base rounded. Diam. 19 mill. 



Coast between Luchin and Ponti^ Black Sea. 



Is perhaps a synonym of the preceding species. 



H. RETICULATA, Bottger. PL 58, figs. 51-53. 



Like H. Mingrelica, but strongly spirally sulcate throughout, 

 moderately umbilicated, chestnut corneous above, greenish 

 below ; whorls 6j, closely rugulosely striate, suture with a white 

 thread-like margin. Diam. 23 mill. 



Caucasia. 

 H. SUANETICA, Bottger. PL 58, figs. 54-56. 



Narrowly umbilicated, thin, very shining, brownish amber- 

 color, base white; whorls 5J, a -little convex, regularly increas- 

 ing, obsoletely striulate, more distinctly so at the white-margined 

 suture, with close light spiral lines, last whorl subdilated, double 

 the width of the penultimate, and high in proportion to its 

 width. Diam. 19'5 mill. 



Caucasia. 

 H. SUCCINACIA, Bottger. PL 59, figs. 57-59. 



Like the preceding, but larger, more widely umbilicated, more 

 depressed, very thin, yellowish amber-color; whorls 6, more 

 slowly increasing, the suture less impressed, striae more obsolete, 

 last whorl wider in proportion to its height. Diam. 20'5 mill. 



Caucasia. 

 H. SELECTA, Mousson. PL 59, figs. 60-62. 



Moderate!} 7 " umbilicated, thin, lightly densel} r striate, shining, 

 whitish corneous ; whorls 6, scarcely convex, the last a little 

 dilated at the aperture. Diam. 21 mill. 



Kutais, Transcaucasia. 

 H. SIMONF, Bottger. PL 59, figs. 63-65. 



Rather narrowly umbilicated, thin, shining, corneous-white; 

 whorls 6, scarcely convex, rather rapidly increasing, densely 

 irregularly striulate, last whorl double the width of the penulti- 

 mate, planate below. Diam. 22 mill. Syria. 

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