3-4 zEuxis. 



N. FavEOLATA, Punkcr. PI. 10, fig-. 111. 



Ash-coloreil ; longitudinally finely ribbed, interstices cancel- 

 lated. Length, -T inch. 



Hah. xmknown. 



The figure is rather wider than tiie usual form of N. leptospira, 

 and shows a narrow, defined eolumella-callus ; ncA'crtheless, I 

 strongly suspect that this is only an immature form of that 

 species. 



X. PLANicosTATA, A. Adams, n. 10, iig. 11 2. 



Ash-colored, closely and finely flat-ribbed, ribs sometimes 

 obsolete on the body whorl. Length, 20 mill. 



Paj/ta, Peru ; under .stones at low water. — Cuming. 



X. SPARTA, Marratt. PI. 10, fig. 11:]. 



Light ash-color, fasciate witli fulvous, purplish within. 



Length, '5 incli. 



W. Coast, of So. America. 



I am not actpiainted with this species. 



X. GAUDIOSA, Hinds. Pi. 10, figs. 114-120; PI. 11, figs. 121-124, 

 126-132. 

 Spire usually acuminate, ribbed, sutures crenuhite or smooth, 

 body whorl generally smooth. Whitish, yellow, rufous, choco- 

 late, Avith frequently distant, narrow i-ed revolving lines and 

 irregular broad bands ; maculate or closely punctate with 

 darker markings ; sometimes unicolored. The form varies from 

 elongated to broad ovate, fi'equeutly constricted at the upper 

 part of each whorl. Length, "To-l inch. 



Straits of Malarca, Philippines, Pohinesia, Sandwich Islands, 



Guinea Coast, W. Africa. 



A solid, smooth, usually gaudily painted species, varying very 

 much in form and coloration. A large number of these variations 

 have received specific names, but 1 do not find in any of them 

 really distinctive characters. N. .Herlula, A. Ad. (fig. 116), and 

 N. seinmih-ata, Dnnki^r (fig. 117), have the typical coloration, 

 and the latter possesses the distant red revolving lines, which 

 so frequently form the groundwork of the ornamentation. In 

 N. zonalia, A. Ad. (fig. 118), the three brown bands which are 

 obscurely marked in N. sertula, become well colored. Another 



