ANtllOZlOA. 
Ooel. 18 
Origin of these is strongly radial. The longitudinal septal muscles are 
but slightly developed. The Cerianthidm seem to approach the Zoan- 
ilildce, whereas the Actiniidcc and Edwardsicc are later types; there is an 
external longitudinal muscle in their walls, and their septal muscles are 
better developed than in the Zoanthidcc. The relationships of the Acti- 
niidce may be chiefly determined by the peculiar development of their 
septa. The Edwardsm form a smaller, but well characterized group, 
and are distinguished by having eight septa and a variable number of 
tentacles. The authors divide the Ccelenterata into the Entocarpce and 
EctocarpcG ; in the former, the genital organs are supported by the endo- 
derm, and in the latter by the ectoderm. The Entocarpm include the 
Anthozoa, Acraspeda^ and probably also Charyhdea and Lucernaria ; the 
EctocarpcG include the IlydromediiscG, Siplionophora, and Ctenophora. 
The second chapter of this part consists of a lengthy discussion of the 
“ Blattertheorie ” and the Keimblattertheorie.” 
13. JouRDAN, E. Sur les Zoanthaires Malacodermos dcs Cutes de Mar- 
seilles. 0. R. Ixxxix. p. 462; abstract in Ann. N. H. (6) iv. p. 326. 
In Phellia^ the cellular layer of the ectoderm secretes a viscous mucus, 
which by agglutinating fragments of all sorts gives the body a peculiar 
appearance. In CerianthuSf the mesodermic layer is remarkable, being 
composed of a thick muscular region included between two planes of 
connective tissue. 
14. Klunzinger, C. B. Die Korallthiere des Rothen Meeres. Berlin : 
1879, 3 vols. 
The first volume of this work appeared in 1877, and was recorded in 
Zool. Rec. xiv. 
16. Kocii, Or. VON. Bemerkuugeu fiber das Skelet der Koralleu. 
Morph. JB- V. pp. 316-323. 
It has been usually stated that the theca is the calcified basal part of 
the tissues of the polype ; these researches prove, however, that the 
derma and the theca are independent formations. The theca seems to 
bo formed by a thickening of the septa, which secondarily fuse together 
below. The paper is divided into three parts, the first dealing with the 
theca of the reef corals, the second of the skeleton of Clamdaria, and the 
third of the fusion of the calcareous particles in different genera. 
16. Krukenberg, 0. F. W. Ueber den Verdauungsmodus der Actinien. 
Sep. Abdr. aus Vergleich.-physiolog. Studien an den Kfisten der 
Adria. Heidelberg: 1879, pp. 38-66. 
[Not seen by the Recorder.] 
17. Nicholson, H. A. On the structure and affinities of the tabulate 
corals of the Palaeozoic period. Edinburgh : 1879, 337 pp., 16 pis. 
18. & Etheridge, R., jun. Description of Palaeozoic Corals 
from Northern Queensland, with observations on the genus Steno- 
phora. Ann. N. H. (6) iv. pp. 216 & 265. 
The genus SfenopJiora must be referred to the Favositidcc^ and is thus 
widely separated from Chcctetes and Monticuhpora, to which it bears a 
