PERISTERNIA. 153 



lanceolatus, Adams and Reeve. ruclis, Reeve. 



lautus, Reeve. sanguifluus, Reeve. 



Ijratus, Reeve. spacliceus, Reeve. 



nanus, Reeve. Stokesii, Gray. 



nodatus, Mart. turritus, Gmel. 



recurvirostris, Wag. varicosus, Reeve. 



rigidus, Wood. Zea, Morch. 



Sub-gen. plicatella, Swainson (Cjmatium, Lmk, not Bolt.). 



Spire moderate, whorls angular, concavely depressed round the 

 upper part. 



Barclay!, Reeve. polygonus, Linn. 



candelabrum. Reeve. scolymus, Gmel. 



cariniferus. Lam. Thersites, Reeve. 



Genus PERISTERNIA, Morch. 



Shell subturreted, not umbilicated ; whorls longitudi- 

 nally ribbed ; aperture oval ; canal moderate and re- 

 curved ; outer lip thin and crenulated ; columella with 

 one or two slight plaits anteriorly. 



Ea:. P. nassatula, Lamarck, pi. 16, fig. 5. Shell, P. 

 nassatula, fig. 5, a. 



This genus may be known fi-om Latirus, which it 

 closely approaches, by the folds on the pillar being less 

 distinct, and by the canal being recurved. 



Species of Peristernia. 



Australiensis, Reeve. crenulata. Reeve. 



bella. Reeve. crocea. Gray. 



Caledonica, Petit. gemmata. Reeve. 



cinerea. Reeve. incarnata, Desli. 



concinna, Reeve. raaculata. Reeve. 



VOL. I. X 



