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increasing by calicular gemmation. lie failed to detect any opercular scales, 
but mentions the two conditions — specific (cone-shaped) and mutatio 
(cylindrical) — described by Lindstrom. The peripheral area between the 
septal lamellae is filled with stereoplasma of varying thickness, but in some 
corallites forming a solid zone, which leaves only the spine-like ends of the 
lamellae free. 
1902. — Mr. N. Lebedew, in his “ Devonian Corals of Russia,” refers to 
Lonsdale’s type T. ccquabile as a Cyathophyllum, 1 but I regret my inability 
to read Russian and am not in a position to discuss the matter further. 
1 Lebedew — M<jm. Comity G6ol. Russ., 1902, XVII, No. 2, p. 87. Lebedew gives references to two other 
notices of T. cequabile, those of Griinewaldt and Hoffman. 
