G1BBUS. 81 



a contiguous tubercle, and three somewhat basally situated lip- 

 teeth ; peristome thickened, reflected, thinner and sinuous above. 



Long. 16-5, diam. 11 mill. 



Isl. Poulo Condor, Cochin China. 



Type of Mr. Ancey's group Oophana. 



Unfigured Species of the Subsection Odontartemon. 



S. CAVICOLA, Gredler. China. 



S. LEONENSIS, Pfeiffer. Sierra Leone. 



S. EBURNEUS, Pfeiffer. Cochin China. 



S. FOOTEI, W. and H. B Ian ford. India. 



The original description and figures of this species are not 

 accessible to me. It is stated to be perhaps a variet3 T of S. 

 Perotetti. 



S. ELISA, Gould. Mergui Archipelago. 



S. BIDENS, Mollendorff. China. 



S. PACHYCHILUS, Mollendorff. China 



Genus GIBBUS, Montfort, 1810. 



Section GIBBUS (s. stricto). 



G. LYONETIANUS, Pallas. PI. 21, tigs. 78, 79, 80, 81. 



Corneous yellow or yellowish white ; parietal wall with a 

 tooth ; umbilicus profoundl}' rimate. Length, 30 mill. 



Isle of France. 



Gmelin called it Trochus distortus, and Bowdich Pupa modio- 

 linus. 



Var. ANTONI, Pfr. Figs. 80, 81. 



Shell openly umbilicated, parietal wall of aperture toothless. 

 Pupa Grateloupiana, Pfr., is a synonym. 



Var. SINISTRORSUS, Nevill. Shell reversed. Rare. 



Var. OBTUSUS, Pfr. Unfigured. Considered a variety only, by 

 von Martens. 

 6 



