NATICA. 23 



equally well known as N. maroccana, Chemn. The typical 

 condition of the species is represented by figs. 74, 75. This 

 form inhabits W. Africa, West Indies, Panama, Pol} T nesia, etc. 

 N. Cayennensis (fig. 80), N. sagittifera (fig. 36), and N. Sou- 

 leyetiana (fig. 81), of Recluz, N. undulata, Pease MS., and 

 probably N. Manceli, Jouss. (fig. 82), and N. undata, Phil. (fig. 

 88), are synonyms. Very probably N. Gualteriana, Petit (PL 

 8, fig. 49), belongs here ; it resembles N. tessellata, Phil., quoted, 

 below. 



Yar. LUBIDA, Phil. Figs. 76, 77, 79, 83, 84. 



Yellowish green or whitish, the bands obscure, with faint 

 chestnut lines crossing them instead of the sagittate markings, 

 suture plicate. 



N. tessellata (fig. 79) and N. hebraea, Phil., include specimens 

 with the color lines more distinctly marked. Occurs mainly in 

 Central Polynesia, Sandwich Islands, etc., but also in West 

 Indies and W. Africa. 



N.plicatula, Nuttall MS., is a synonym, but the figure given 

 by Reeve does not represent it, but more probably N. sordida, 

 Phil. N. Maheensis, Dufo, which I have described on p. 20, 

 may possibly be a large aberrant form of this variety. N. 

 limacina (fig. 83) and N. Marchei (fig. 84), Jouss., belong here. 



Vtir. LIVIDA, Pfeiiier. Figs. 85-87, 89-92. 



Plicate at the suture ; whitish or yellowish white, often with 

 a broad band of ash-color or brown, almost covering the body- 

 whorl, sometimes indistinctly doubly banded ; interior of aper- 

 ture more or less tinted with chestnut or chocolate, the columellar 

 callus chocolate-colored. 



West Indies to Brazil. 



Closety allied to the preceding variety, but distinguished by 

 its colored callus ; it is also usually smaller. N. nifilabris, 

 Reeve (fig. 86), N. lacernula. Orb. (fig. 87), N. Jamaicensis, 

 (fig. 89), N. gracilis, Sowb. (fig. 90), and N. nigrescens, C. B. Ad., 

 are synonyms. N. Menkeana, Phil. (figs. 91, 92), is referred 

 here by Morch ; it can scarcely be determined with confidence. 



Tar, UNIFASCIATA, Lam. Fig. 93. 



Yellowish brown, chocolate or olivaceous, whitish towards the 



