4 Orust. 
CRUSTACEA. 
SchiOdte, J. 0., & Meinert, F. Symbol® ad monographiarn Cymo- 
thoarum, Crustaceorum Isopodum familire. Oontinuatio. Nat. Tids. 
xiii. pp. 281-371, pis. xi.-xvi., and xiv. pp. 221-352, pis. vi.-xiv. 
Seguenza, G. Gli Ostracodi di Messina. Nat. Sicil. iii. pp. 39-42 & 
75-78. 
Smith, Sidney I. Preliminary Report on the JBrachyura and Anomura 
dredged in Deep Water on the South Coast of New England. 
P. U. S. Nat. Mas. vi. pp. 1-57, pis. i.-vi. 
. List of the Crustacea dredged on the Coast of Labrador by W. A. 
Stearns. L. c. pp. 218-222. 
. Review of the Marine Crustacea of Labrador. L . c. pp. 223-232. 
Ssekely, B. Tanulmanyok a Diaptomus petefejlodesenek elso phasis- 
airol a blastoderma fellepeseig. Koloszvar : 1882, 8vo, 41 pp. 
Stebbing, T. The ‘Challenger’ Amphipoda. Ann. N. H. (5) xi. 
pp. 203-207. 
Studer, T. Yerzeichniss der wahrend der Reise S.M.S. ‘ Gazelle ’ an der 
Westkuste von Afrika, Ascension, und dem Cap der guten Holfnung 
gesammelten Crustaceen. Abh. Ak. Berlin, 1882 [published 1883], 
32 pp., 2 pis. 
General Morphology. 
J. S. Kingsley discusses the resemblances and differences between the 
Crustacea and Insecta , and suggests a distinct Crustacean Phylum, to be 
derived from the Nauplius form, whereas the Insectar are to be derived 
from a form like Peripatus ; Am. Nat. xvii. pp. 1034-1037. 
The general anatomy of Canthocamptus and Gammarus is given in 
C. L. Herrick’s “ Types of Animal Life selected for Laboratory Use in 
Inland Districts.” 
C. L. Herrick states that in Cyclops “ it is no uncommon thing to 
see females of less than half the size of the adult with ova sacs, and it 
is common to meet larvae, in which the antennae are as yet composed of 
but few joints, in similar condition.” He suggests that, under certain 
circumstances, some individuals reach a larger size than ordinarily, and 
undergo a certain amount of alteration, or rather “ intensifying,” of 
their specific characters ; this state is called by him “ post-imago.” So 
0. signatus = coronatus (Claus) is, according to him, a post-imago of 
C. tenuicornis. The same is to be found in the genus Diaptomus. Am. 
Nat. xvii. pp. 208-211. 
1 . Nervous System and Organs of Sense. 
W. Vignal gives a general description of the anatomical arrange- 
ment and microscopical structure of the central parts of the nervous 
system in the Decapod Crustacea , chiefly from observations made in 
Homarus vulgaris, Palinurus vulgaris, Astacus fluviatilis, Palcemon serratus, 
