21 
taining living specimens of Corymorpha nutans. These 
bodies presented a close resemblance to the fission-frustules 
of Schizocladium, and were seen to become developed into 
hydranths, which it is almost certain are ultimately destined 
to repeat the form of the adult Corymorpha. Their origin 
was, at the time I noticed them, very enigmatical, but I now 
regard it as highly probable that they are produced by a 
process of spontaneous fission from the filaments which are 
emitted near the base of the stem in Corymorpha. They 
would seem, however, to differ from the fission-frustules of 
Schizocladium in becoming directly developed into a tropho- 
some. 
On some New Spercizs of the Genus AMPHIPRORA. By 
Rev. Evcenr O’Mzara, M.A., Rector of Newcastle 
Lyons, Co. Dublin. Plate III. 
Some of the Diatoms which are the subject of this paper 
have been brought under notice from time to time at our 
club meetings. And now I desire to present them in regular 
form, adding such species as have come under my observa- 
tion in the interval. The material which furnished them 
was collected by our respected club member, Dr. E. Perceval 
Wright, during his sojourn in the Seychelles. This very 
active member of our circle has contributed largely to the 
interest of our meetings, and to the value of our ‘ Proceedings,’ 
by various communications in his own speciality, arising out 
of his researches in that hitherto unexplored district, and 
has placed me under a debt of gratitude for the material with 
which he has supplied me, containing in abundance diato- 
maceous forms of the greatest beauty and rarity. 
The Seychelles group of islands is situated in the Indian 
Ocean, between 3° 42’ and 5° 50’, lat. S., and between 55° 
15’ and 56° 50’ long. E. 
The matter was from four distinct sources: 
1. The contents of large Holothurians, such as Mulleria 
nobilis and Holothuria fulva. 
2. ‘The washings of a beautiful coral, Tubipora musica. 
3. The washings of some echinoderms. 
4. The sediment of vessels in which various Crustacea, 
Annelids, and Mollusca, were conveyed to this country. 
The subject of this paper is limited to certain forms of the 
genus Amphiprora. As occasion serves I hope to collect 
