26 ARPt r.ARTA. 



M. JoNAST, Dnnkor. PI. S, fi^s. 29-32. 



Whitish, 3'ollowish or ash-color, usually eliostuut at the suture 



and base, with sometimes a central chestnut band. Spire and 



upper portion of body whorl ribbed, sometimes cut into nodules 



beloAv the suture. Length, •4-'6 inch. 



Port Jackson, Australia. 



N. BiD-chardi, Bunker (fiy-. 30), is in every respect typical. 



.V. lahecida, A. Ad. (tig. 31), and N. vona, A. Ad. (fig. 32), are 



evidently the same species. 



N. CALLOSA, A. Ad. PI. 8, figs. 33, 34. 



Very broadly gibbous when adult, with wide-spreading, thick 

 margined callus ; ribs small, distant, sometimes cancellated and 

 nodulous ; white, three banded with chestnut or suffused with 

 with olive. Length, •4-"5 inch. 



Phil'ppines, in sandy mud at' seven fathoms ; Indian Ocean. 



This may be only a variety of the i)receding species, from 

 which it is distinguished principally b}- form and sculpture. N. 

 caUoapira. A. Ad. (fig. 34 . is synonymous. 



N. CANCELLATA, A. Ad. PI. 8, fig. 35. 



Tiight brown, maculated with darker brown. Length, "6 inch. 



Pli ilippincK. 

 'V\\v type is said to b{> rather tliin and semitrausparont. 



N, Mangelioides, Reeve. PI. 8, fig. 36. 



Solid, dark ash-color ; whorls tul)erculated at the upper part, 

 tubercles Iiere and there prolonged into ribs, interstices cancel- 

 lated. Length, •.') inch. 



Port Jarkmn, Anntrtrlin (Angas). 



Maj^ be only a more solid growth of A^. cnneellaM. 



N. globosa, Quoy. PI. 8, figs. 37, 38. 



Longitudinally finely [)licated, crossed by revolving stria? ; 

 yellowisii white, tinged or nearly covered with chocolate, with 

 fre(iuently a white central l)and. Length, "S-'fiS inch. 



New Ireland, Viti Isles. 



N. clalln-ata, Kiener (fig. 38', is the same. 



N. GRANIFERA, Kiener. PI. 8, ligs, 39-41. 



White or yellowish, tuberculate. Length, •fi--9 inch. 



Philippines to Central Polynesia ; Isle of Bourbon. 



