EBURNA. 209 



C. FUSIFORMIS, Deshayes. PL 81, figs. 457, 458. 



Straw color, with three orange bands. 



Cambodia . 

 Another possible variety of 0. Helena. 



C. BOCOURTI, Brot. PL 81, fig. 459. 



Light corneous, with from one to five brown bands. 

 Length. 22 mill. 



Pexdbury, Siam. 



The ribs are more distant than in the preceding species. There 

 is a slight shoulder, the further development of which might run 

 the species into C. scalarina. 



C. CAMBOJIENSIS, Reeve. PL 81, figs. 451, 452. 



Straw colored or greenish olive. Length, '75-1 inch. 



Cambodia. 



C. SCALARINA, Deshayes. PL 81, fig. 453. 



Orange-brown. Length, 12 mill. 



Cambodia. 

 C. JULLIENI, Deshayes. PL 81, figs. 454-456. 



Yellowish white, with three usually broad chocolate bands. 

 Length, 16-24 mill. 



Cambodia. 



G. bizonata, Desh. (fig. 455), does not differ, and C. Broti, 

 Desh. (fig. 456), is a variety in which the spire is more depressed, 

 making the form more globose, with the longitudinal ribs merely 

 rudimentary. 



C. ANNESLEYII, Benson. Quilon, Malabar. 



C. FUSCA, H. Adams. Cambodia. 



I cannot attempt the identification of these two unfigured 

 species. 



Sub-Family EBURNIN^E. 



Genus EBURNA, Lam. 



The Eburnse comprise a small, very well defined group of about 

 a dozen species, the generic character being unmistakable in all 

 of them. The whorls have more or less shoulder; those of E. 

 Zeylandica showing the least, being a mere slight flattening of 

 the contour next below the sutures, whilst in E. spirata there is 

 27 



