ZONITES. 177 



H. BILLEHEUSTI, Crosse and Fischer. PL 53, fig. 66. 



Tmperforate, very thin, smooth, pellucid, light corneous, suture 

 margined ; whorls 6, regularly increasing, rather flattened, the 

 last with thread-like carina, not descending, scarcely convex 

 below. Diam. 3*25 mill. 



Cochin China. 

 H. ORCULA, Benson. PL 53, fig. 61. 



Scarcely perforate, thin, irregularly costulate-striate, scabrous, 

 translucent, corneous, suture deep ; whorls 3. 7, rounded, the last 



scarcel} r descending. Diam. 2 mill. 



Bengal. 

 H. CASSIDULA, Benson. PL 53, fig. 08. 



Perforate, striulate, decussated by very minute, close spiral 

 striae, a little shining, whitish yellow with a wide chestnut band 

 above the periphery, suture impressed, slightly margined ; whorls 

 5, convex, slowly increasing, the last with rounded peripheiy, a 



little convex below. Diam. 6 mill. 



Mbulmein. 

 II. ACALLES, Pfr. PL 53, fig 69. 



Scarcely perforated, thin, obliquely rugose, diaphanous, light 

 corneous; whorls 5j, regularly increasing, the last with carin- 

 ated periphery, not descending in front, base convex. 



Diam. 13 mill. 



Nilgherri Mts., India. 

 H. GLOMEROSA, Austen. PL 53, fig. 70. 



Subperforate, subglobular, with indistinct very close longi- 

 tudinal stria?, dull olivaceous, suture shallow ; whorls 6, the last 

 very tumid ; aperture narrowly lunate, contracted slightl}' on the 

 outer margin, a well-marked callus on the body-whorl, peristome 

 solid, somewhat thickened below into an indistinct tooth, colu- 

 mellar margin oblique. Diam. 1'3 mill. 



Dikrang Valley. Dafla Hills, India. 



The group-relationship of this minute shell is very uncertain. 



H. SINAPIDIUM, Reinhardt. PL 53, figs. 71-73. 



Covered perforate, corneous, shining, lightly striate, suture 

 narrowly margined ; whorls 4, narrow, slowly increasing, the 

 last with rounded periphery, base a little convex. 



Diam. T75 mill. 



Japan. 



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