NATICA. 39 



N. pisiFORMis, Recluz. PI. 12, fig. 8. 



Narrowly umbilicated, white, columella with a white callus 

 above; rather solid, whorls somewhat flattened above. 



Length. 5-6 mill. 



Va Iparaiso , Ch Hi. 



I know nothing of this species. 



N. NUCULA, Reeve. PL 12, fig. 9 ; PI. 9, fig. 80. 



Subgloboso, body-whorl obliquel}' flattened or subconstricted 

 around the middle ; columella with a broad, button-like callosity 

 completely covering the umbilicus ; dull yellowish white, liA'id at 

 the apex. 



Neiv Ireland. 



The figure is said to be "considerably magnified," but no 

 dimensions are given. 



N. OBTUSA, Jefi're3-s. PI. 9, fig. 79. . 



Conically globose, rather thick, opacjue and gloss}^ whitisii, 

 inner lip callous, completely covering the umbilicus. 



Length, t'5 mill. 



N. Atlantic Ocean. 



Closelj^ resembling N. immaculata, Totten in form, but dis- 

 tinguished by its closed umbilicus. 



N. soLUTA, Gould. PI. 9, fig. Tl. 



Shell small, thin, globular, whorls slighth' tabulated above, 

 suture channeled ; umbilicus deep, narrow, columella somewhat 

 callous above ; color whitish. Length, 13 mill. 



? Southern Coast of South America. 



The locality is very doubtful. It does not appear to differ 

 much from X. pallida, Brod. and Sowb., and P. P. Carpenter is 

 pi'obably correct in referring it to that species. 



X. MoNTAGUi, Forbes. PI. 14, fig. 30. 



Yellowish or rufous white, smooth, suture narrowh* channeled, 



umbilicus moderate, with a nearly obsolete entering callus. 



Length, 10 mill. 



Iceland, England, Xoricay. 



It is JV. rufa, Montagu ; N. helicina, Saguenza (in part); JV. 



albula, Marshall, and N. squalida and X. rutila of Macgillivray. 



