40 NATICA. 



N. NOTABiLis, Jeffreys. PI. 13, fig. 18. 



Somewhat pointed at the extremities, thick, smooth, opaciue, 

 rather glossy- ; yellowish white, with three equidistant bands on 

 the body-whorl, composed of oblique, close, reddish brown 

 streaks; umbilicus contracted b}' a thick but small chestnut- 

 blotched pad, so as to form a concentric groove. 



Length, 10 mill. 



Off Sagres^ Portugal. 



Like N. triseriata in coloring, but the whorls are not so 

 ventricose, spire more pointed, and umbilicus different; it 

 differs also from N. macilenta in shape, consistency, color and 

 umbilicus. 



N. MACILENTA, Phil. PL 6, figs. 17-19. 



Shell conic-ovate, smooth, spire rather elevated, openly lun- 



bilicated ; yellowish white, four-banded with oblique chestnut 



streaks, columellar callus chestnut-tinged. Length, 12-15 mill. 



Mediterranean., Atlantic Coast of Spain and N. Africa. 



N. pulchella., Risso, is probably the same species, and N. Rizzse, 

 Phil. (fig. 19), is a slight color-variet3^ It is verj' doubtful 

 whether this species is distinct from N. Guillemini, Payr., 

 differing only in its smaller size and more oval shape. 



N. Guillemini, Payr. PL 6, figs. 16, 14, 26. 



Narrowl}- umbilicated, conicallj^ globose ; purplish white, 

 marbled or obscurely five-banded with chestnut blotches, which 

 are more distinct and irregular around the suture, columellar 

 callus tinged with chestnut. Length, 18-22 mill. 



Souther)! Europe, Atlantic and Mediterranean. 



N. marmorata, Risso, and N. maroccana, Salis, are sj-nonyms. 

 See remarks under preceding species. N. Franciscana, Recluz 

 (fig. 26), is a variet}'. 



N. Alderi, Forbes. PL 6, figs. 13, 15. 



Obliquely rounded above, subglobose; whitish, usually with 

 five bands of chestnut-colored markings, the three lower ones 

 sagittate ; umbilicus open, narrow, the columellar callus chestnut- 

 tinted, slightl}' impinging above. Length, 12-15 mill. 



Northern Europe to Mediterrariean Sea. 



This is iV. nitida, Forbes and Hanley (fig. 15), not Donovan, 



