or SOUTIIEEN INDIA. 
9 
the names of Semlcelleporaria, Hcptocelleporarm, Multiporma, Maltescharellina, 
3Iultescliarinella, Ilultescharipora, etc., to which may he added Ennalliopom, Gabb 
and Horn, which authors also established a MuUiporina, but apparently in the 
same sense as proposed by d’Orhigny. 
Somewhere in the proximity of Celleporaria must apparently he classed 
Flahellopora, d’Orhigny, Cmnulipora, v. INfay. (Comp. Reuss in Sitzb. Akad., Wien, 
AI. N. Klasse, vol. 50, p. 612), OrhituUpora* Stol. (Sitz. Akad. AI. N. Klasse, AVien, 
vol. 45, pt. i, p. 90,) and possibly also Bioupularia, Ileuss, (il)id. vol. 50, p. 205,) 
with the type species B. lentioularis. The classification of these free growing 
Ciliopoda in the CelleporibjE is, however, doubtful. I shall allude to them again 
in the Selenauidm. 
B. MEMBRANIPORlNAi. 
Cells flustrine, being depressed, usually surrounded by a raised margin, 
with the upper calcareous portion slightly convex or flat, and Avith the aper- 
ture either sub-terminal or suh-ccntral, and of moderate or large size ; some- 
times the entire xipper surface is horny, with the aperture not well defined. 
Colonies entirely attached to foreign substances, or only Avith the base of the 
ramose stems. 
Between the true Alemhraniporid cell, A\diich is almost entirely open in front, 
and the urceolate cell, there exist many intermediate forms. One of the best marked 
is that of a depressed shape, having the upper surface calcareous, almost quite 
flat, pierced by a comparatively small, Avell defined, aperture, situated near the 
anterior end, and the whole is surrounded by a raised margin. This form of the 
cell may be called Biscoporkl, and the typical species possessing it might be 
grouped into a distinct sub-family, intermediate betAvecn the celeeporinm and 
MEMPRAmpoRiSM I Ijut as the majority of the species are intimately connected AAuth 
those of the latter sub-family, I prefer for the present not to cany the division of the 
family further. The gradual transition from a horny surface to a partially and 
at last entirely solidified and calcareous one may best be studied in recent species, 
as may be seen from a comparison of the description and figures of my Memhra- 
nipora Bengalensis in Journal Asiat. Soc., Bengal, 1869, vol. xxxviii, j)f- hj 
p. 55, pi. xii. 
7. Discopora, Lam., 1816. 
Cells flat, with the aperture near the anterior end, surrounded by slightly 
thickened lips, each cell with a raised margin; colonies incrusting foi’eigu sub- 
stances in single layers. 
Although Lamarck’s name has in the sense, as here used, been employed by a 
feAV palaeontologists only, I do not think that there can be any serious objection to 
* Reuss identifies (Sitz. Akad., Wien, vol. 55, pi. i, p. 217,) the type species of tliis genus O. JIaidingeri with 
O. (Cellepora) petiolus, Lonsdale, apud Dixon. .Judging from the figure of the latter, the median cells are much more 
numerous, and all are more depressed and with a more transversely e.xpanded aperture. I am by no means sure that 
this identification will hold good. 
C 
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