THE NAUTILUS. 3d 
Nov., 1897, supplements the preceding. “ Hygromia umbrosa Partsch 
(from Ightham fissure) is by far the most noteworthy form, since it 
‘has not been met with previously on this side of the channel. Its 
present range is southern Germany, Bohemia, Switzerland, etc., and 
according to Mérch, near Holstenburg in Denmark.” A peculiar 
form of Carychium minimum also occurs. The exact age of this 
deposit is somewhat doubtful, but it is certainly Pleistocene. “ Taken 
altogether, the shells from our cave deposits are decidedly larger 
than recent examples, and there can be no doubt that there has been 
a marked diminution in the size of our indigenous mollusca, and 
probably also in their numbers since Pleistocene times.” In Amer- 
ica the only extensive Post-Pliocene deposit, the Loess, shows an 
opposite tendency, and the few Pleistocene caves, such as the fissure 
at Port Kennedy, which proved to be rich in sloth, sabre-tooth, pec- 
eary and other mammalian remains, have so far yielded no mollusca. 
M. le Dr. JoussEAME describes an alleged new genus and species 
of Nuculide as Diabolica diabolica (Le Naturaliste, Nov., 1897, p. 
265). Comment is superfluous. 
VERZEICHNISS DER AUF DEN PHILIPPINEN LEBENDEN LAND 
Mo.iusken, by Dr. O. von Mollendorff. (Abhandl. naturforsch 
Gesellsch.). In this timely list the multitudinous new species added 
to the Philippine fauna in recent years by Hidalgo and especially von 
Mollendorff are intercalated with those made known by Semper and 
the older authors, the whole classified, with references to descriptions 
and localities ; forming an indispensible handbook to the Philippine 
fauna. One thousand and seventy-nine species is the grand total of 
land shells. As an instance of the additions to this fauna made by 
von Mollendorff and his collaborator Quadras, we may mention the 
section Diaphora of Ennea, in which 32 of the 35 known species 
were described by him. ‘This is an extreme case, but many genera 
have been more than doubled in species by von Mollendorff’s 
researches. A very large number of the new species were des- 
eribed in the “ Nachrichtsblatt”’ without figures; and it is to be 
hoped that the author’s intention of figuring these forms will be 
fulfilled. We understand that another volume of Semper’s great 
work will be devoted to this purpose. 
Mr. W. Moss has been investigating the genitalia of the English 
Zonitoides species, and has given a preliminary notice of some 
interesting results before the (Brit.) Conch. Soc., May 12, 1897. 
He announces the finding of a channel-shaped calcareous organ with 
