MOLLUSCA, 
607 
number, as regards species and individuals, than the freshwate 
shells ; and one must travel to the hilly and wooded regions of 
the interior to find more peculiar and rare land-shells ; this is 
the case also in Java, Sumatra, and Borneo, in Siam and China, 
but not on the rocky south coast of J ava and on the small vol- 
canic islands of the Moluccas. Limestone-hills yield generally 
a great number of individuals (Kupang in Timor, Petshaburi in 
Siam), and often also very peculiar species— so, for example, 
those at Maros near Macassar. 
The Limnccacea of Eastern Asia are reviewed by Von Mahtens^ he enume- 
rates from Japan SPlanorbis and 1 Ltmticcus^, from China 6 Planorbis and 8 
Limncem ; from Siam 2 Planorbis and 1 Limnmis ; from the Philippines 1 
Planorbis^ 1 new Pliysa^ 1 AmphipepleOj and 1 lAmncom * from the Indian 
archipelago (Java, Sumatra, Celebes, and Timor) 3 Planorbis^ 1 Physa^ 1 or 2 
Limnmis exhibiting numerous varieties. The Limncoacea of Japan and China 
are generally similar to those of Europe, only the Chinese L. pervhts is a 
somewhat peculiar form j the characteristic Indian typo of Limnmis^ exem- 
plified by L, lutcolus (Lam.), bulla (Bens.), and cerasum (Troschol) of British 
India, is also spread over the Transgangetic peninsula and the Indian archi- 
pelago, but^of smaller size ; the equally characteristic Planorbis indicus (Bens.) 
extends from British India to Siam and Cochinchina : but on the islands of 
the archipelago smaller species only, more resembling the European forms, 
have hitherto ;been found j one of them, Pk compressus (Hutt.), appears to be 
very widely spread, specimens from Japan and China exhibiting no constant 
differences from those of Java and Celebes. Physa^ as far as is known at 
present, is represented in the eastern part of the archipelago only, Amphi-- 
peplea only in the Philippines. Not one species of this family is as yet known 
from the Moluccas, except, on the authority of Lesson, Physa molticcensis. 
[The Recorder may add that he has since received the Ancylus baconi (Bourg.), 
a species of British India, also from the Philippines.] 
The Unionidco or Najadea of Malacca, Sumatra, Borneo, Java, and the 
Philippines are enumerated by Von Martens, Mai. Blatt. xiv. pp. 10-17 : — 
two species of two oi Alasmodonta, and eleven of Unioj some others 
being regarded as subspecies or synonyms. Not one is known from Celebes, 
Timor, or the Moluccas. 
Philippines. Von Martens gives a list of land-shells found in the islands 
Luzon and Mindanao by members of the Prussian Expedition, and a second 
richer list of species collected by E. J agor in that archipelago, and presented 
to the Berlin Museum. Some observations concerning the living animals, 
and a review of the systematic arrangements of the species belonging to the 
genus Cochlostyla, which is quite peculiar to the Philippines, are added. 
Preuss. Exped. Zool. ii. pp. 87-98. 
3. Australia and Polynesia. 
Australia. Some new land-sliells described by Cox, Proc. Zool. Soc 
1807, pp. 30 and 722 ; ho promises to publish a work in which all the Aus- 
tralian land-shells will be described and figured. 
New Caledonia. Some new land-shells described by J. B. Qassies, II 
Crosse, and E. Marie, Journ, Conch, xv. pp. 61-63, 179-194, 293, 312- 
317, 433-437. 
