578 
ZOOLOGICAL LITERATURE. 
furcal appendages at the posterior end of body, but right and left of it there 
is a bristle grooving from a little knot ; these are, doubtless, sensory organs. 
C. longisetum, sp. n. (p. 452, pi. 35. fig. 4), Giessen. 
Apsilus, g. n., Mecznikow, I c. p. 346. . This genus is distinguished by a 
complete absence of the rotary organs so characteristic of this class, and in 
being attached ; the water-system is very conspicuous. The young differ 
from tlie adult forms in possessing rotary organs and eyes and in being free. 
A. lentiformis, sp. n., p. 346, Taf. 19, found attached to the imder surface 
of the leaves of Nyniphcea lutea at Giessen. 
ANNELIDA 
BY 
E. Perceval Wright^ M.A., M.D., F.L.S. 
A. Separate Work. 
Quatrefages, a. be. Histoire naturelle des Anneles marins 
et d^eau douce. Annelides et Gephyriens. 2 vols. Paris, 
1865. 8vo. 
This work, which is accompanied with an atlas of coloured 
plates, was not published until the summer of 1866. In the 
^llecord^ for 1865, pp. 715-723, we have given the classifica- 
tion of the genera of the Annelida and Gephyrea as adopted 
by the author ; pp. 1-175 of vol. i. are devoted to an account of 
the exterior organization, of the anatomy and physiology, and 
development of the Annelids, and a brief history of their geo- 
graphical distribution &c. The remaining portion of the first 
volume and the whole of the second is taken up with the de- 
tails of the known genera and species. Very complete indices 
arc added, as also an alphabetical list of the various authors 
referred to in the work. We think it right to mention that 
M. Claparede has already indicated some very serious short- 
comings of this work : they consist chiefly in not paying due 
regard to important observations of his predecessors or fellow- 
labourers, in trusting to figures alone where he ought to have 
studied descriptions, in describing from examples preserved in 
spirits, thus introducing a great number of varietes alcoo- 
liques^^ into the system, and, finally, in giving innumerable 
erroneous references to other works. 
