> 
1881.] Zoilogy. 237 
the shore were found a small shrimp, and the crab, Te/phusa 
fluviatilis, A very fine volcanic mud from the greatest depths 
contained diatoms, foraminifera, &c. No alga was brought up. 
The Unio shells at the depth of 250 metres were curiously soft- 
ened and resembled in condition the fossils of some of the Tertiary 
strata of the middle of France; this is probably chiefly due to 
pressure. 
FrEsSH-WATER Microscopic OrGAnisMs.—Prof. Maggi has pub- 
lished a catalogue of the Rotifera of Volconia, containing fourteen 
genera and eighteen species. He also gives a list of the fresh- 
water Rhizopoda of Lombardy, and has come to the conclusion 
that Amphizonella flava is not identical with Pseudochlamys patella, 
but that it is a developmental stage of some unknown form. . 
has investigated the plastids found in ciliated Infusoria, and especi- 
ally those which are found in the nuclei of the Oxytricha. When 
these organisms are treated with a two per cent. solution of bi- 
chromate of potash, dark granulations are to be observed in the 
parenchyma of the body, and a black reticulum is also to be made 
out in the nuclei. 
ZooLocicaL Norres—The classification of the order of Dis- 
m 
of the group pass. It will be seen from this that Haeckel does 
not regard the Trachynemidz or the Lucernariz as forming sub- 
orders of the Discophora, but independent orders. The discovery 
of a large number of new forms has led him to propose this new 
classification of the order. Some points in the structure of the 
herring are discussed by Professor Moebius.in the reports of the 
commission for the scientific exploration of the German seas, com- 
prising figures illustrating the external and igternal anatomy of this 
fish, and its crustaceous food, as well as the appearance of the 
fish at different ages; and a comparison of the herring with the 
spratt. He also gives a figure of a young flounder, and notes on 
the food of fishes and their mode of reproduction, An elab- 
orate work by Dr. R. Latzel, favorably noticed in Mature, on the 
Myriopods of Austria, is being issued in parts at Vienna; the 
first part comprises the Chilopoda; we notice that the author 
adopks Mr. Ryder’s new order Symphyla for the synthetic form 
Scolopendrella. Professor Huxley lately read a paper before the 
Zoological Society of London, on the application of the laws of 
evolution to the arrangement of the vertebrates and more partic- 
ularly of the mammalia. In a paper read by M. Viallanes, 
before the French Academy, on the sensitive nerve-termination 
in the skin of some insects, especially the larve of the common 
