278 C. A. White—The Genus Pyrgulifera Meek. 
like those which characterize fresh waters elsewhere, such, ae 
e are 0 
forms especially, are so nearly like Trochus that if they were 
found among a marine fauna would doubtless be referred to 
that genus. Mr. Smith has described these as belonging to a 
new genus, under the name of Limnotrochus. Another species 
which has much the aspect of a marine shell, is the Melani 
(Sermyla) admirabilis of Smith; but one of the most interesting 
generic forms of this Tanganyika fauna is the one to which Mr. 
Smith gave the subgeneric name of Paramelania. He described 
two species under this name, P. Damoni and P. crassiangulata ; 
and M. Crosse (loc. cit.) referred an associated species, the Mela- 
nia nassa of Woodward, to the same generic group. These 
An interesting paper has lately appeared from the pen of 
Dr. Leopold Tausch,t in which he also places the three Tan- 
ganyika forms last referred to, under the genus Pyrgulifera of 
Meek, which genus he regards as nearly related to Paludomus 
Swainson. He also announces the discovery of Meek’s type 
orms heretofore known. — gic 
A Review of the Non-Marine Fossil Mol 
Nat. Mus., vol. v, pp. 94-99, pl. iii. 
Third Ann. Rep. Director U. S. Geol. Survey, pp- 40°- 
lusea of North America. 
550, pl. 1-32. : 
¢ Tanseh, Dr. Leopold. Ueber einige Conchylien aus dem Tanganyika-See un 
deren fossile Verwandte. Sitzb. der k, Akad. der Wissensch., Band xe, Juli, 1884; 
pp. 56-70, plates i and ii. 
