The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . Fig. 10.—A single row of the lingual teeth of Bathanalia howesii. Tanganyika throughout the southern third of the lake. Itis characterised chiefly by its shell which, in all essentialconchological characters, is identical with several marineJurassic fossils that have been described under the nameAmberleya. Except for its widely different shell, Batha-nalia is structurally identical with Typhobia, even thelingual teeth presenting only the minor differences seenon compar

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The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . Fig. 10.—A single row of the lingual teeth of Bathanalia howesii. Tanganyika throughout the southern third of the lake. Itis characterised chiefly by its shell which, in all essentialconchological characters, is identical with several marineJurassic fossils that have been described under the nameAmberleya. Except for its widely different shell, Batha-nalia is structurally identical with Typhobia, even thelingual teeth presenting only the minor differences seenon comparing Figs. 4 and 10. CHYTRA, MOORE. CHYTRA KIRKII (FIG. I I ). The anatomy of this remarkable form was worked out THE TANGANYIKA PROBLEM. 229 by Miss Digby.* Originally the empty shell had beendescribed and figured by Smith in the Proceedings of theZoological Society for 1881, and was placed by him in thegenus Limnotrochus, together with Limnotrochus tJwmsoni.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectm, booksubjectzoology