42 NATICA, 



Believed to have been obtained from the stomach of codfish. 

 If the original figure is correct, this species appears to have 

 escaped all other collectors. 



Section Payraudeautia, Bucq., Dautz. & Dollf., 1883. 

 N. INTRICATA, Donovan. PL 6, figs. 20, 21. 



Largel}' excavated umbilicated, with two funicular ridges ; 

 purple-white, with five or six white bands bearing angular or 

 sagittate chestnut markings, interior chocolate-tinged. 

 Length, 15-22 mill. 



Azores^ Southern Europe, Mediterranean Sea. 

 N. fasciata, Risso, N. grisea, Requien, N. Valenciennesii, 

 Pa^-r., are sjaionyms. 



Section Mamma, Klein, 1753. 



N. DEiODOSA, Reeve. PI. 15, fig. 36. 



Depressed ovate, spii-e minute, body-whorl flattened beneath, 

 the umbilicus filled by a heav}' white callus ; whorls smooth, 

 striate, pale straw-color. Length, ri5 inches. 



Australia. 



Differs in form and umbilicus from N. aurantia., Lam. 

 N. AURANTiA, Lam. PI. 15, figs. 39-41, 37. 



Thick, ponderous, body-whorl conically sloping above and a 

 little constricted in old specimens ; orange-brown ; callus heavy, 

 ivory-white, in adults usuall}^ entirely filling the umbilicus. 



Length, 2 inches. 



Singapore, Moluccas, Philippines, Australia, N. Caledonia. 



Var. MiTTREi, Hombr. and Jacq. (fig. 37), is a specimen in which 

 the umbilicus is not entirel}' filled by callus ; N. citrina, 

 Phil. (fig. 41), appears to be a similar form. 



Var. STRAMiNEA, Rccluz. Fig. 40. 



Color straw-yellow, varying to yellowish white. 



N. PowisiANA, Recluz. PI. 15, fig. 42 ; PI. 19, fig. 92 ; PI. 20, 



figs. 99, 100. 



Openly obliquely umbilicated, columellar lip with a heavy 



white callus overhanging a central broad entering funiculum ; 



whitish or yellowish white, usually overlaid on the body-whorl, 



