xxxii. CONCHYLIA— D/rHYE.4. 



3. divaricata, striis utrinqu^ rectangulosis. 



tlie striae rectangular on both sides. 



30. Ceyptodon. 

 1. flexuosus, Cryptodon. 



31. DoNAX. 



* margin's interno denticulato. 

 with the inner margin toothed. 



1. Trunculus, striis longitudinalihus lavibus. 



with the longitudinal striae smooth. 



2. denticulata, striis longitudinalihus punctatis. 



with the longitudinal striae punctured. 

 ** margine interno integerrimo. 



with the inner margin very entire. 



3. complanata, vittd alba longitudinali. 



with a single white longitudinal band. 



4. plebeia, vittis duabus fulvis longitudinalibus. 



with two fulvous longitudinal bands. 



5. rubra, vinacea immaculata leevis. 



of an uniform pale claret-color and smooth, 

 32. Capsa. 



1. castanea, castaneo-rubra, vittd longitudinali saturatiori 

 subarcuatd. 



bright chesnut, with a deeper and somewhat 

 curved longitudinal band. 



