The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . Fig. 11.—The shell of Chytra kirkii. From the side and from below ;slightly enlarged. In 1897, however, I had occasion to show that the latterform not only differs considerably from kirkii, but is alsocomparable to the old Jurassic fossil known as Littorinasulcata, whereas kirkii closely resembles some of the

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectm, booksubjectzoology