289 



by a chestnut line, margin of aperture also chestnut-colored, at 

 irregular intervals the whorls are somewhat obliquely crossed 

 by chestnut lines. Length, 7'5 mill. 



Cape Hatter as, North Carolina. 



N. TRILINEATA, Morch (unfigured). Guinea. 



N. OBTUSA, Anton (unfigured). Hab. unknown. 



Section YOLUSIA, A. Ad., 1861. 



N. IMBRICATA Sowb. PI. 71, fig. 31. 



Whitish, longitudinally striated and lineated with red ; whorls 

 concave above the periphery which is subangular. 



Length, 19 mill. 



St. Elena , W. Coast of Central America. 



Genus HOPLOPTEROX, Fischer, 1876. 

 H. TERQUEMI, Fischer. PI. 71, figs. 33-35. 



Minute, thin, white, translucent, shining ; whorls 7, the first 

 four smooth, minutely flexuously striated, the others developing 

 a long wing on either side. Length, 1-15 mill. 



China Sea. 



A section of this singular shell shows it to be similar to 

 Eulima as to its interior. The figures represent different stages 

 of growth. 



Genus STYL1FER, Brod., 1832. 



S. STIMPSONIT, Verrill. PL 71, fig. 37. 



White, swollen, spire short, rapidly enlarging; whorls 4-5, the 

 last very large, smooth, a slightly impressed revolving line just 

 below the suture. Length, 3*75 mill. 

 George's Bank, Block Island, off Coast of New Jersey, on Echini. 



S. TURTONI, Brod. PI. 71, figs. 32, 36. 



Subglobose, spire small, acuminated, produced ; whorls angular 

 above, the last very large ; outer lip very sinuous. 

 Length, 4'5 mill. 



Northern Europe to Canary Is., on Echini. 

 This species is found near the anal opening of its host, and 

 Dr. Jeffreys was therefore of opinion that it derived its nourish- 

 19 



