472 



CHITONINiE. 



canaliculatus, Quoy and 



Oaim. 

 carinulatus, Reeve. 

 castas, Reeve. 

 cateiiLilatus, Wood. 

 catillus, Reeve. 

 circumvallatus, Reeve. 

 colubrifer, Reeve. 

 contractus, Reeve. 

 cor ruga tus, Reeve. 

 crispus. Reeve. 

 decussatus, Reeve. 

 Dieffenbacbii, Reeve. 

 divergens, Reeve. 

 erythronotus, G. B. Adams. 

 floccatus, Sow. 

 granulosus, Fremhl. 

 illumiuatus, Reeve. 

 incarnatus, Reeve. 

 inquinatus, Reeve. 

 Janeirensis, Gray. 

 lateritius, Shuttl. 

 limaciformis. Sow. 

 longicymba, Blainv. 

 lutulatus, Shuttl. 



Luzonicus, Soiv. 

 Magdalensis, Hinds. 

 Mediterraneus, Gray. 

 nietallicus, Reeve. 

 pallidulus, Reeve. 

 pallidas, Reeve. 

 papillosus, C. B. Adams. 

 pectinatus, Sow. 

 pertusus. Reeve. 

 platessa, Gould. 

 productus. Reeve. 

 Proteus, Reeve. 

 pulcherrimus, Soiv. 

 purpurascens, C. B. Adams. 

 reticulatus, Reeve. 

 Rissoi, Payr. 

 sculptus, Sow. 

 segmeutatus. Reeve. 

 squamulosus, C. B. Adams. 

 stramineus, Soiv. 

 striolatus, Gray. 

 textilis, Gray. 

 ustulatus, Reeve. 

 viridulus. Couth. 

 virgatus. Reeve. 



Genus LEPTOCHITON, Gray. 



Mantle-margin covered with minute, granule-like, 

 round, smooth scales, not imbricate. 



Shell with the valves external, broad, transverse ; the 

 hinder valve with the apex sub-central, superior. 



Si/n. Stenosemus, Midd. 



Ex. L. asellus, Chemnitz, pi. 53, fig. 4. L. cinereus, 

 Linnaus, fig. 4, a. 



In Leptochifon the plates of insertion are rudimentary, 

 without any notches in either the terminal or central 



