28 Crust. 
CRUSTACEA. 
C. dentata (Heller), Naples ; C. linearis (L.), Northern Seas ; C. attenuata 
(Dana), Rio Janeiro and Port Jackson : described and figured from speci- 
mens, and critical notes concerning other species, by Mayer, l. c. pp. 36-72, 
pi. i. figs. 5-8, comparative sketches of the whole animals, pis. ii. & iii. 
figs. 1-15, iv. figs. 20-25, v. figs. 15-18 & 22-30, particular parts of them, 
and several woodcuts. 
Caprella ciliata ) sp. n., Sars, Forh. Selsk. Chr. 1882, p. 114, pi. vi. fig. 9, 
Norway. 
Podalirius Tcrceyeri (Haller), Naples, on muddy ground, the four hinder 
feet stemmed on the ground, and P. minutus , sp. n., Naples; Mayer, l. c. 
pp. 73 & 77, pis. i. figs. 3 & 4, iii. figs. 30-36, iv. figs. 9-19, v. figs. 11-14. 
ISOPODA. 
A. Gerstacker, in Bronn’s “ Klassen und Ordnungen des Thierreichs,” 
v., Arthropoda, ii., continues his valuable comprehensive description of 
the whole organization of the Isopoda, pp. 97-112, passing to their 
development, pp. 112-165, and biological relations, including the changes 
of colour observed in some of them by Mayer and others, p. 169 ; 
their occurrence on land and in fresh-water, pp. 170-173; and parasitic 
life, with list of all known parasitic species, and indications of their host, 
pp. 179-186 ; finally a critical review of the classifications proposed by 
various authors, pp. 186-197. lie himself arranges this Order as follows, 
p. 198 : — 
Section 1. Isopoda anomala. Only family, Anceidce. 
' Section 2. Isopoda genuina. Family 1. Oniscoidea ; 2. Serolidea ; 3. 
/ Asellina ; 4. Munnopsidce ; 5. Idotheidea , including Arcturus ; 6, 
Anthuridce ; 7. Sphceromidce ; 8. JEgulce ; 9. Cymothoidcc ; 10. Bopy - 
ridcc ; 11, Cryptoniscidce. 
Full characters of all these families, pp. 199-203, of all known genera, 
pp. 203-239. The plates ix.-xxii. contain figures of the chief representa- 
tives and their structural peculiarities. 
30 fossil forms of Isopoda are enumerated by L. v. Ammon, SB. bayer. 
Ak. 1882, p. 507, pis. i.-iv. 
Tanaid^: (incl. Apseudidje). 
G. O. Sars publishes a revision of the cheliferous Isopoda , comprising 
the families Apseudidce and Tanaidce , enumerating all known genera and 
species, and describing several new ; he thinks that F. Muller is wrong in 
attributing two distinct forms of males to the same species. Arch. Math. 
Naturv. vii. i. pp. 1-54. 
Leptochelia savignii (Kroyer), ?,= Tanais edwardsi (Kroyer), $ , 
Madeira, Southern Coast of England, North America, Mediterranean, 
dabia (Kroyer) = ? algicola (Harger), Brazil, North America, and Medi- 
terranean, neapolitana , sp. n., Naples ; Sars, l. c. pp. 25-27. 
Hetero tanais, g. n. Female nearly as Leptochelia ; in the male the 
first pair of antenna) long and slender, with well-developed flagellum ; the 
