Fuly 14, 1870 | 
NATURE 
207 
The Entozoa are illustrated by the Coexurus of the 
rabbit’s muscle, which is regarded as probably of “the 
same species as the one individuals from which are, when 
in the cystic state, lodged usually in the brain of the 
sheep, and are the cause of the disease commonly known 
as the ‘ sturdy,’ ‘ gid,’ ‘ staggers,’ or ‘turnsick’” (p. 136). 
So that C. cunzculé is identical with C. cerebralis. There 
are also some diagrams of parts of Tzenia in the cestoid 
state (pp. 246-252), from Leuckart and Van Beneden, 
with descriptions. 
Several new terms are introduced in this work, and 
most of them are likely to be useful additions to nomen- 
clature. Among them are the words “ proctuchous” and 
“aproctous,” which we have only seen before used to distin- 
guish the 7zréel/arza with an anus from those without one. 
Would it not be possible to substitute Brachionopoda for 
the barbarous word “ Brachiopoda,” which is moreover 
too near to “ Branchiopoda?” Several terms in common 
use are given by Dr. Rolleston in an improved form ; and 
we think him quite justified in substituting JZyriopodia for 
Myriapoda, A zu/atafor Annelida (which is only a pseudo- 
classical form of “ Les Annelides,” the name invented by 
Lamarck), and Hedriophthalmata for Edriophthalmata 
—though if this last change be made, it will be as well to 
write “ Hedr@ophthalma,” since the root must be édpatos, 
not the doubtful diminutive @piov, and the analogy of 
povopOudrpos, puptopOadpos points out the true form of the 
termination. In the same way the word Echinodermata 
(which was first correctly applied by Stein to the shed/s of 
Echini) and Pachydermata ought to be written Echino- 
derma and Pachyderma, especially as the latter form is 
actually used by Aristotle. But there are probably too 
many words of this termination for the change to be 
easily accomplished. Useless synonyms, however, ought 
undoubtedly to be abandoned; such troublesome words, 
for instance, as Actinozoa, Ascidioidea, and Bryozoa, 
ought to yield to Axthozoa, Tunicata, and Polyzoa, for 
reasons of convenience, euphony, and priority. 
The student will find it useful to note the following 
errata, in addition to those indicated in the book itself. 
P. xiv. monophydont for monophyodont and Montremata 
for Monotremata ; p.li., furculum for furcula, repeated p. 
21 dis and p. 22; p. ciii., classes Brachiopoda for class 
Brachiopoda,; p. 21, obtusator for obturator; p. 25, Wirbel 
thiere for Wirbelthiere; p. 35, Korperban for Korperbau ; 
Pp. 78, differs from the imago for differs from the larva; p. 
136, and again pp. 241 and 251, Caenurus for Coenurus; 
p. 160, coenosare for coenosarc; p. 224, two sets of them 
and two rays respectively for two sets of three, &¢." Pp. 252, 
Thudichen for Thudichum, and, in the index, Vesicular 
should read Veszcudae, while the reference to Prof. Turner 
will be found at p. 1. of the second part instead of p. i. of the 
Introduction, Lastly, at p. 251, line 10 from the bottom 
of the page, the figure 6 is misprinted for the letter 4, 
It is much to be hoped that a second edition of this 
thorough and painstaking work will soon be called for ; 
since nothing would better prove the increased number 
of serious zoologists in this country. Should its learned 
author then see fit to unite the second and third parts 
together, and to add somewhat full directions for dissec- 
tion, I venture to think that the book will be made even 
more useful than it already is. 
P, H. Pyr-SMITH 
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