55 
This mode of increase is a very remarkable one, and excellent examples of it 
will be found in some of our illustrations of Tryplasma reproduction. The 
tabulae of Pycnostylus appear to be always horizontal and complete. Were 
it not for the spined septal lamellae of Tryplasma, the latter is, to all intents 
and purposes, a Pycnostylus. 
It has already been stated, in the second section of this Memoir, that 
Dr. Clemens Schluter made use of Dana’s name Calophyllum, resuscitated by 
Dybowski, for a Devonian coral, which, from subsequent researches, appears 
to possess all the characters of Tryplasma. Now, Calophyllum lias always 
been a stumbling-block in the path of students of Palaeozoic corals. By 
Dana it was described 1 without type, or assigned species, as simple, caliculato- 
ramose or aggregate, with septa and concave tabulae, but no dissepiments. 
• 
The width of the septa was not stated, nor whether consisting of simple, 
vertical lamellae, or the latter bearing spines or granules. Messrs. II. Milne- 
Edwards and Ilaime considered' 2 that Calophyllum did not differ from 
Amplexus, and that Dana included in it very diverse forms. 
Dybowski appears to have been the resuscitator of Calophyllum. On 
a previous page it was explained that lie adopted the name for certain Silurian 
corals from the Baltic Provinces. 3 * I think it may be accepted that of the two 
species described, the first ( Calophyllum Pocmeri ) is a Tryplasma, although 
we are faced with the question of lateral budding in this instance. To 
obviate the difficulty caused by the halo of doubt overhanging Calophyllum, 
Dana, the late Prof. E. von lloemcr proposed the name Coclophyllum 4 to take 
its place, and as his type selected Calophyllum paucitabulatum, Schluter. 
To the latter Author’s definition, Boemer added the important statement that 
the radiating septal lamellae are finely denticulated, and even delicately 
notched. Now, this feature, if sustained, bearing in mind the otherwise 
simple structure of C. paucitabulatum, at once places Ccclophyllum on a level 
with Tryplasma. The structure described by Boemer was, indeed, corrobo- 
rated by Dr. E. Erecli 5 , who, in redescribing the same coral, says without the 
slightest reservation, that the septal lamellae are notched. 
It appears, however, that Ccclophyllum was a preoccupied name, having 
been used by Quenstedt for a Mesozoic coral, I believe, and certainly in 1875 
by Scudder as a genus of Orthoptera. 
1 Dana — Zooph. Wilkes U. S. Explor. Exped., 1846, p. 115. 
2 H. Milne- Ed wards and Haime — Archiv. Mus. Hist. Nat-, 1852, V, p. 347 ; Hist. Nat. Cora'., 1860, III, 
p. 348. 
3 Dybowski — Mon. Zoantharia Scler. Rugosa, 1873, Pt. 1, p. 118. 
1 Roemer — Lethfea Pal., 1883, I, Lief. 2, p. 409. 
8 Freeh — Dames and Keyser’s Pal. Abhandlungen, 1886, III, Heft 3, p. 101. 
D 
