HELIX-CAM^ENA. 203 



broadly dilated, half covering the umbilicus. Umbilicus deep, 

 rather narrow. 



Alt. 29, greater diam. 55, lesser 46 mill. (Specimen.') 



Alt. 26, greater diam. 54, lesser 46 mill. (Bens.} 



Khasi Hills ; Pegu. 



H. ochthoplax BENS. Ann. Mag. N. H. 1860, vi, p. 190. PFR. 

 Monogr. v, p. 400. H. ochthoplax Sens., THEOBALD & HANLEY, 

 Conchol. Ind. t. 26, f. 5. Helix (Eucochlias*) ochthoplax Bens., 

 NEVILL, Handlist Moll. Ind. Mus. pt. 1, p. 81, 1878. Nanina 

 (Oxytes) ochthoplax Bens., PFR. Nomencl. Hel. Viv. p. 54, 1881. 

 TRYON, Manual of Conchol. 2d series, ii, p. 129. 



This form is like illustris in general characters, but is more 

 depressed and umbilicated. The sculpture is less distinct than in 

 the other species, and the lip is expanded but not reflexed. The 

 figures on plate 61 are drawn from a specimen received from Nevill. 

 The figure in Conchologia Indica has been copied by Tryon in 

 volume II of this work, under the section Oxytes of Nanina, where 

 of course, it does not belong. 



H. ochthoplax is the type of the subgenus Eucochlias of Theobald f 

 placed by Nevill between Stylodon and Hadra, and containing 

 besides the type, H. bougainvillei, illustris, sulcocincta and pyrostoma. 

 The second of these is correctly associated with ochthoplax ; but 

 bougainvillei belongs to Hadra, near such species as H. semicas- 

 tanea ; sulcocincta and pyrostoma belong to the section Phania. As 

 H. ochthoplax is a genuine Camcena of the cicatricosa type, Eucoch- 

 lias must be regarded as an absolute synonym of Camcena. 



Blanford says of the animal : A true Helix, nearly black, w T ith 

 pale tawny markings, surface granulate ; jaw grooved. 



H. SATURNIA Gould. PL 60, fig. 5. 



Shell umbilicated, thick-lens-shaped, rather thin, obliquely stri- 

 ated and very minutely granulated, tawny; spire conoid-convex, 

 obtuse ; suture submargined ; whorls 4|, nearly plane, regularly in- 

 creasing, the last somewhat swollen toward the suture, not descend- 

 ing in front ; periphery rather acutely keeled, base inflated, obsoletely 

 spirally sulcated. Umbilicus moderate sized, open. Aperture little 

 oblique, rhombic-lunar ; peristome expanded and reflexed, the ter- 

 minations joined by a thin callus ; columellar margin nearly vertical, 

 reflexed in a vaulted manner. (P/V.) 



Alt. 24, greater diam. 53, lesser 45 mill. 



Tavoy, Burmah. 



