THE NAUTILUS. 



4. Lutea Group. 



75 



5. Umbilicata Group. 



p. umbilicata. 



P. nmbilicata Pse. 

 P. gibba Pfr. 

 P. b (color Pse. 



p. gibba. 



p. hebe. 



P. crassilabris Pse. 

 P. ;ie6e Pfr. 



p. otaheitana. 



6. Otaheitana Group. 



P. otaheitana Brug. 



P. vanikorensi-^ Q. & G. 



P. mooreana Hartra. 



P. lineata Less. 



P. sutiiraiis Pfr. 



P. garrettii Pse. 



7. Tjeniate Group. 



P. lignaria Pse. 

 P. producta Pse. 

 P. nodosa Pfr. 

 P. stolida Pse. 

 P;?/o.sa Pfr. 



P. tceniata Morch. 

 P. mieans Pfr. 

 P. carteriensis Q. & G. 

 P. attenuata Pse. 

 P. cinerea Albers. 



P. minima Hartm. 

 P. regular is Hartm. 

 P. mieans Hartm. 

 P. corneola Hartm. 

 P. woodlarkiana Hartm. 

 P. hastula Hartm. 

 P. c^ara Pfr. 

 P. hyalina Mod. 

 P. Hartmani Smith. 

 P. flexuosa Harlm. 



