712 
ZOOLOGICAL LITERATURE. 
The publication of this catalogue was delayed, owing to the 
lamented death of the author while it was still in the press. 
Dr. Baird has, however, prepared a supplement containing ad- 
denda, corrigenda, and a notice of additional species found since 
Dr. Johnston^s death. We must content ourselves with simply 
mentioning the publication of this volume, which makes its 
appearance so many years after the death of its author, and 
which, however much it may be now out of date, must be 
consulted by all taking any interest in the subject of British 
Worms, especially the Annelids. The British non-parasitical 
worms are divided by Dr. Johnston into the following orders 
1. Turbellaria ] 2. Bddlomorpha \ 3. Bdellidea; 4. Scoleces; 
5. Gymnocopa; and 6. Annelida. The various new genera 
and species for the first time described will be found mentioned 
under their respective orders and families ; but we have not 
attempted to correct the synonymy or to refer the species to 
more recently described genera j to do so would be to rewrite 
the volume. 
JouRDAiN, S. Recherches sur kanatomie des Siponcles. Compt. 
Rend, tome lx. no. 20, 15 Mai 1865 (extrait), p. 1042. 
These anatomical researches were made on Sipunculus yiyas, 
De Quat., and S. obscurus, De Quat. In S. obscurus the 
circulatory system is composed of a flexuoiis reddish tube, which 
makes its way underneath the first unrolled portion of the ali- 
mentary canal ; in S. yigas this tube is double. In both species 
it terminates posteriorly in a slightly swollen cul de sac ; ante- 
riorly it debouches into a circular sinus which encircles the 
pharynx and which communicates freely with the circlet of 
tentacles ; its walls contain muscular fibre, and are consequently 
contractile : the interior is filled with a fluid containing nume- 
rous corpuscles, like those found in the fluid of the general 
cavity, but very much smaller in diameter. The circulation of 
this fluid is effected, not by the contractility of the vessels, but 
by many vibratile cilia placed either continuously or in bunches 
on the inner surface of the walls. Traces of a urinary system 
were also apparently met with. 
Keferstein, W. Beitriige zur anatomischen und syste- 
matischen Kenntniss der Sipunculiden. Zeitschr. f. wiss. 
Zool. XV. Band, 1865, pp. 401-445, Taf. xxxi.-xxxiii., 
Nachriclit. Gesellschaft Wissenschaften, Gottingen, March 
4, 1865, pp. 189-209. 
The anatomical details in this monograph are considered 
under the heads of Outer Skin, Muscular System, Alimentary 
Tract, Nervous System, Blood System, and Generative System. 
In the systematic part a list of the genera and species of the 
Sipunculidoi is given. 
