40 NATICA. 



N. NOTABILIS, Jeffreys. PL 13, fig. 18. 



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

 rather glossy ; yellowish white, with three equidistant bands on 

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

 streaks ; umbilicus contracted by a thick but small chestnut- 

 blotched pad, so as to form a concentric groove.' 



Length, 10 mill. 



Ojf Say res, Portugal. 



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

 ventricose, spire more pointed, and umbilicus different; it 

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

 umbilicus. 



N. MACILENTA, Phil. PI. 6, figS. 11-19. 



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



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. Rizzae, 

 Phil. (fig. 19), is a slight color-variety. It is very doubtful 

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

 differing only in its smaller size and more oval shape. 



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



Narrowly umbilicated, conicalLy 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. 



Southern Europe, Atlantic and Mediterranean. 



N. marmorata, Risso, and N. maroccana, Salis, are synonyms. 

 See remarks under preceding species. N. Franciscana, Recluz 

 (fig. 26), is a variety. 



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, slightly impinging above. Length, 12-15 mill. 



Northern Europe to Mediterranean Sea. 



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



