392 RISSOINA-BARLEEIA. 



convex, with deep suture ; aperture subcircular, peristome con- 

 tinuous. Length, 1/5 mill. 



Kergueleris Land. 

 R. CALIGINOSA, Smith. PI. 60, fig. 69. 



Scarcely rimate, rather thin, slightly shining, smooth, with ob- 

 solete incremental striae, blackish ; whorls 4J, convex, with deep 

 suture ; peristome continuous, smoothly thickened, reflected at the 

 whitish umbilical region. Length, 2 mill. 



Kerguelen's Land. 



On account of Littorina caliginosa, Gould, which he supposed to 

 belong to the same group, Dr. Dall changed the name of the 

 present species to R. Smithii 



Unfigured Species Referred to Rissoina. 



The subdivisions not indicated in the descriptions. 



R. GRACILIS, Pease. Sandwich Is. 



R. TERES, R. PULCHELLA, R. INCONSPICUA, R. INERMIS, R. EFFI- 



CATA, R. CARDINALIS, Brazier. Australia. 



R. SUPRASCULPTA, R. IvERSHAWI, R. CYLINDRACEA, R. CRETACEA, 



Tenison- Woods. Australia. 



R. MINUTISSIMA, R. UNILIRATA, R. FLINDERSII, R. CONCATENATA, 



Tenison-Woods. Tasmania. 



R. APPROXIMA, Petterd. Tasmania. 



R. EXPANSA, Carpenter. Mazatlan. 



R. INTERFOSSA, Carp. California. 

 R. CONTABULATA, Morch. Sonsonate, Central America. 



R. VITRINELLA, Morch. West Indies. 



R. PLICATA, R. RUGULOSA, Hutton. New Zealand. 



Genus BARLEEIA, Clark. 1855. 



B. RUBRA, Adams. PL 60, figs. 70-72. 



Solid, smooth, shining, indistinctly spirally striate, chestnut or 

 yellowish brown color; whorls 5-], slowly increasing, suture smooth, 

 margined by a darker band, lip thick, simple. Length, 2*5 mill. 



Europe. 



B. unifasciata, Mont. (fig. 71), B. aurantiaca, Brus., B. fulva, 

 Mich. (fig. 72), and vars. mujtiseufa, Monts. (major, Monts.), albes- 

 , Kequieii, pallida, Jeffreys, are synonyms. 



