GEOGRAPHICAL DISTRIBUTION. 
Pol. 5 
In Cristatella and Plumatella the cavity of the supra oesophageal 
ganglion is not completely surrounded by nervous elements, blit has endo- 
thelium on the oesophageal side. The contained fluid is in communication 
with the body-cavity, and does not coagulate under the influence of 
reagents. The distribution of the nerves is described ; Saefftigen. 
The colonies of Cristatella are unisexual ; the foot is not a true foot, 
but motion may take place either in the direction of its length or of its 
breadth; Jullien (3). 
The operculum not only serves to close the orifice of the zooecium, but 
also to close the cavity into which the compensatory water penetrates 
when the polypide is exserted ; Jullien (2). 
The conclusions of La Yalette St. George on spermatogenesis are in 
the main confirmed by researches on Alcyonella ; Korotneff. 
The formation of young buds is always connected with the presence of 
older ones ; the inner layer of the bud becomes ectoderm, the outer 
becomes the inner epithelium of the wall of the cystid, the cells of which 
give rise to muscles of integument and gut, retractor muscles and filaments 
connecting polypid and cystid. Different forms of colonies related to 
varying rapidity in budding. The statoblast forms a single primary 
individual, which forms a stock by gemmation. Spermatozoa develop not 
in the funiculus, but in the septa ; Braem. Criticism regarding question 
of priority ; Kraepelin (2). 
Investigations on the development of Bagula calathus confirm in the 
main Barrois’ results; the hypoblast does not seem to take part in the 
formation of the bud, as maintained by Ostrooumoff ; Vigelius. 
Some points in the terminology of Kraepelin (cf. Zool. Itec. xxiv, Pol. 
p. 2), and in his treatment of various genera, especially Frederkella , are 
criticised by J ullien (4). 
MS. of Desmarest and Lesueur explanatory of certain rare plates ; 
Pergens. 
Utility of sections in study of fossil forms maintained; Foerste. 
Reply ; James. 
GEOGRAPHICAL DISTRIBUTION. 
Wenloclc Beds. Catalogue of fauna ; Vine (3) : 1 newPolyzoon ; id. (2). 
France. New localities for various fresh-water species ; Jullien, (4) 
p. 244. 
Caen and Ranville. 33 Jurassic forms ; Vine (1). 
Roscoff and Mentone. Joliet. 
Cracow. Fresh- water species ; WierzeJski. 
Azores , Fayal. Plumatella repens ; Guerne, p. 29. 
Mauritius. Notes on numerous forms ; 21 new species, 2 new genera ; 
Kirkpatrick (1). 
Philippines. Plioronis busJcii , n. sp. ; M‘Intosh. 
Victoria. Many Celleporcc figured, 9 n. spp. ; MacGillivray. 
Port Western , Victoria. Retepora sinuosa f n. sp. ; Kirkpatrick (3). 
Port Phillip. Notes on several forms, 4 new species ; id. (2). 
