149 



nearly flat, smooth purplish brown, with two bands of 

 plain yellow 'which are bordered by two narrow bands 

 of white spotted with brown, lower part of the body 

 whorl white, a dark brown band bounds and enters the 

 umbilicus which is neither grooved nor striated ; pillar 

 lip brown and white, slightly reflected on the umbilicus. 

 Young, with the spire less produced. 0.60. Dover, 

 Isle of Man, ^-c. 



N. GLABRISSIMA. Forbes. NERITA G. Brown. 

 Wern. Mem. 2. p. 532. t. 24. /. 12. N. SULCATA. 

 Turt. D.p. 124. t. 56,7. NATICA S. F. p. 320. 



Globular, semitransparent, bluish white ; whorls four, 

 with remote oblique longitudinal striae, swollen, well 

 defined ; pillar lip flat, projecting a little in the middle 

 over the cavity behind, which is long and deep. &. 

 Dublin Say. 



N. HELICOIDES. Johnston in Trans. Berwick. N. 

 H. Soc. 1835. Ovate-conical, smooth, white, imma- 

 culate, covered with a yellowish epidermis; whorls 

 five, rounded, separated by a channelled suture, the 

 spire produced and rather obtuse ; aperture pure white 

 with a small fissure on the pillar, 0,60, ,,0,40. Ber- 

 ivick Bay. 



