120 GEORGE MATTHAI 



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1891. 



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' Zool. Bull.", ii, no. 6, p. 251, 1899. 



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' Mitt. Zool. Stat. Xeapel ", v, p. 1, 1884. 



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EXPLANATION OF PLATES 7 AND 8. 



Lettering employed. 



alg., algal bodies, c.l., calicoblastic layer, ec/., ectoderm, end., endo- 

 derm. gr.st., granular stratum at base of ectoderm, gr.v., granular 

 vacuole. Ig-f-^ longitudinal fibres of middle lamina, m.f., mesenterial 

 filament, m.l., middle lamina, muc.v., mucous vacuole. «j, type I 

 nematocyst. n.2, type II nematocyst. 



Fig. 1. — Coeloria daedalea (Ell. and Sol.). Part of somewhat 

 oblique section through oral-disc and mesentery. 



Fig. 2. — Eusmilia as per a. Part of vertical section through edge- 

 zone. The endoderm is crowded with algal bodies. 



Fig. 3. — Coeloria daedalea (Ell. and Sol.). Part of transverse 



