RISSOIDE. 61 
Seems to me to belong to an altogether different group from 
the European species. 
Subgenus SPHKIA, Bourguignat. 
Deser. esp. Moll. 1879, type Lithoglyphus zonatus, Woodward. 
9. Lithoglyphus (Spekia) zonatus. 
Lithoglyphus zonatus, Woodward, P. Zool. S. 1859, Lake Nyanza. 
1 Lake Tanganyika; ex Mr. R. Damon. 
Subgenus JULLIENIA, Crosse and Fischer. 
J. de C. XXIV, 1876, type Melania flava, Deshayes, Cambodia. 
Not represented in the Museum, 
Subgenus LACUNOPSIS, Deshayes and Jullien. 
Nouv. Arch. Mus. X, 1874, type L. Jullieni, Deshayes,Cambodia [as Genus]. 
Lithoglyphus martadanensis, Theobald, may possibly prove to 
belong to this group, but I think this will prove to be not the 
case. 
Not represented in the Museum. 
Genus EMMERICIA, Brumati. 
Foss. Moll. Dalmatien, 1874, type Pal. patula, Brum. ; genus of subfam. 
Emmericine, fide Clessin, 1880. 
1. Emmericia patula. 
Paludina patula, Brumati, Cat. Conch. Monfalcone, 1838, and Kiister, 
Conch.-Cab. IT, pl. 8, fig. 15—22. 
var. expansilabris. 
Conch.-Cab. IT, 1852, pl. 8, fig. 18-22, as Pal. patula, Brum. = Pal, 
expansilabris, Mihlfeld, in litt, 
2 Obbrowazzo, Dalmatia; ex “Linnea.” 
M. Bourguignat in his Monograph of the genus, p. 89, con- 
siders this form—doubtless correctly—as a distinct species, 
