The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . Fig. 43.—Semi diagram of the anatomy of Spekia mantle cavity has been opened from above, and thenerves are represented in black. Opposite st the stomach ;stn. the gill; cryst. s. the crystalline style. Tanganyicia. The leaves are similarly broad, low, andtriangular, and their apices are prolonged into the samelittorinoid finger-like processes. Such processes are figured by Haller in the gills of.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectm, booksubjectzoology