94 CYCLOSTREMA. 



I have figured both the illustrations given by Mr. Angas. If his 

 above remarks be well-founded, which I am very willing to believe, 

 several species herein described, and which are principally distin- 

 guished by the number of revolving riblets will need to be suppressed : 

 that of the inconoclast himself will be deservedly lost in the general 

 ruin which he has caused. 



C. TORNATA, A. Ad. PL 32, figs. 75, 76. 



Rather narrowly umbilicated, depressed-subglobose, spire slightly 

 elevated; whorls slowly increasing, rounded, spirally six-ribbed; 

 aperture rounded. Diam. 4'5 mill. 



Japan. 



C. SULCATA, A. Adams. PL 32, figs. 77, 78. 



Umbilicus very wide, grooved, spire convexly depressed, whorls 

 regularly spirally sulcated, the last broad, aperture nearly rounded. 



Diam. 4 mill. Philippines, Jupn. 



C. EXIGUA, Phil. PL 32, figs. 79, 80. 



Rather widely umbilicated, subdiscoidal, with radiating riblets 

 fimbriating four spiral carinse. Diam. 2'3 mill. 



Aden, Arabia.. 

 C. WATSONI, Tryon. PL 32, figs. 81, 82. 



Widely umbilicated, rather depressed, with a narrow, concave 

 shoulder on the whorls, periphery rounded, umbilicus broadly funnel- 

 shaped, bordered by a thread-like carina, with another within it; 

 white, under a slightly mottled or longitudinally banded smoky 

 brown membranous, epidermis ; whorls 4, rapidly increasing. 



Diam. 28 mill. Off Pernambuco, Brazil; 675 fms. 



This is C. sulcata, Watson ; preoccupied by A. Adams. 



C. CONICA, Watson. PL 33, figs. 83. 



Narrowly umbilicated, conical, with about 17 longitudinal lamella?, 

 the interstices spirally striate, white, suture well-impressed: whorls 

 4], well-rounded, rapidly increasing, the last tumid; peristome con- 

 tinuous, but not solute. Diam. 1-5 mill. 



Off Pernambuco ; 350 fms. 



Looks more like a Scalaria than a Cyclostrema. 



