RISSOID^. 61 



Seems to me to belocg to an altogether different group from 

 the European species. 



Subgenus 8PEKIA, Bourguignat. 

 Descr. esp. Moll, 1879, type Lltlioglyphus zonatus, Woodivard. 



9. Lithoglyphas (Spekia) zonatus. 



Lithoglyplius zonatus, Woodward, P. Zool. S. 1S59, Lake Nyanza. 

 1 Lake Tanganyika j ex Mr. R. Damon. 



Subgenus JULLIENIA, Crosse and Fischer. 

 J. de C. XXIV, 1876, type Melaniaflava, Deshayes, Cambodia. 

 Not represented in the Museum. 



Subgenus LAGJJN0P8IS, Deshayes and Jullien. 

 Nouv.ArcTi. Mus. X, 1874, type L.Jtcllieiii, Deshayes, Cambodia [as Genus']. 



Lithoglyplius martahanensis, 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, 



G-enus EMMBRICIA, Brumatl. 



Foss. Moll. Dalmatien, 1874, type Pal. patula. Brum. ; genus of suhfam, 

 lEmmeHcincBffide Clessin, 1880. 



1. Emmericia patula. 



Paludina patula, Brumati, Cat. Conch. Monfalcone, 1838, and K'dster, 

 Conch.-Cab. II, pi. 8, fig. 15—22. 



var. expansilalbris. 



Conch.-Cab. II, 1852, pi. 8, fig. 18-22, as Pal. patula, Brum. = Pal. 

 expansilabris, MvMfeld, in litt. 



2 Obbrowazzo, Dalmatian ex "LinnsBa." 



M. Bourguignat in his Monograph of the genus, p. 80, con- 

 siders this form — doubtless correctly — as a distinct species. 



