88 CYCLOSTREMA. 



FAMILY CYCLOSTREMATID^E. 



Genus CYCLOSTREMA, Marryatt, 1818. 



Section CYCLOSTREMA, (sensu stricto}. 



C. ANAGLYPTA, A. Ad. PI. 31, figS. 15, 16. 



Turbinate, with broad, flattened umbilicus, last whorl with three 

 spiral, beaded ribs, convex, white, solid, lip externally crenulated. 

 Diam. 4 mill. 



Seto- Uchi, Japan. 



C. MICANS, A. Ad. PI. 31, figs. 17, 18, 19, 20. 



More depressed than the preceding species, thick, white, last 

 whorl with three spiral nodulous ribs, the middle one more promi- 

 nent, peristome continuous, thick, externally crenulated, umbilicus 

 rather small. 



Japan, Singapore, Australia. 



C. pulehella, Dunker, (figs. 19, 20) is a synonym. 



C. CALAMELI, Jousseaume. PI. 31, figs. 21, 22. 



Rather widely umbilicated, white, thick, solid, minutely cpstulate, 

 with an obscure spiral line above, periphery angulated, base with 

 three carinse crossing the. radiating stride, producing a subnodulous 

 surface. Diam. 2'5 mill. 



Prince's IsL W. Africa. 



C. MARCHEI, Jousseaume. PI. 31, figs. 23, 24, 25. 



Rather widely umbilicated, white, thick, solid, with spiral riblets, 

 that in the middle of the upper surface tuberculated, riblets closer 

 on the base. Diam. 2'5-4'5 mill. 



Ponlo-Penang, Singapore, Viti Is. 



The larger diameter and last locality are for VitrineUa sculpt it is, 

 Garrett (fig. 25), an undoubted synonym, the types agreeing com- 

 pletely with Singapore specimens collected by Archer. 



C. REEVEANA, Hinds. PI. 31, fig. 26. 



Moderately umbilicated, white, radiately lirate, crossed above 

 by several spiral ridges, of which the centre one is more prominent, 

 forming an angle, ridges close below, spinously tuberculated by the 

 radiating line, umbilical wall radiately .closely striate. 



Diam. 10 mill. Singapore. 



