254 LITTORINA. 



L. TENUIS, Phil. PI. 46, fig. 27. 



Very thin, thinly spirally striate, whorls often tumid above, then 

 flattened, with obtusely angulated periphery ; whitish with faint 

 angular longitudinal chestnut lines, epidermis yellowish, obliquely, 

 faintly lamellar. Length, 14 mill. 



lyis. Ticao, Philippines. 



Section L^^vilitoriisia, Pfeffer, 1886. 



L. CALiGiNOSA, Gould. PI. 46, fig. 29. 



Smooth, or with slight incremental strice, thin, epidermis chestnut 

 color or olivaceous brown, sometimes maculated with yellow ; whorls 

 4-5, ventricose, with deep suture ; interior livid or chestnut colored- 

 Length, 5 mill. 



Terra del Fuego ; South Georgia. 



L. VENUSTA, Pfeffer. PI. 46, fig. 30. 



Inconspicuously rimate, thin, olivaceous corneous, three banded 

 with chestnut, with a very thin epidermis ; whorls 4^, with deep 

 suture ; aperture bluish-ash color, with bright purplish bands. 



Length, 5'6 mill. 



South Georgia. 

 L. GRANUM, Pfeffer. PI. 46, fig. 31. 



Rimate, thin, slightly longitudinally, and distantly, obscurely, 

 spirally striate, light corneous, under a membranaceous yellowish 

 epidermis ; whorls 4?, the last a little inflated ; aperture corneous. 



Length, 1*6 mill. 



South Georgia. 



L. PYGM^A, Pfeffer. PL 46, fig. 32. 



Strongly pitted-umbilicate, thin, chitinous, with thin longitudinal 

 plications and spiral indistinct strise, reddish brown, under a thin 

 epidermis of the same color, columella violaceous, outer lip black- 

 margined. Length, 2 mill. 



South Georgia. 

 L. uMBiLiCATA, Pfeffer. PL 46, fig. 33. 



Very distinctly umbilicated, thin, with a peripheral carina and a 

 distant one above it, longitudinal sculpture obsolete, epidermis very 

 thin, smooth, ochry olivaceous; whorls 5, convex, suture strongly 

 coarctate ; interior light chestnut color. Length, 3 mill. 



South Georgia. 



The specific name is preoccupied by d'Orbigny for a doubtful 

 species. 



