. Earthworms and their allies . Fig. 2. Fig. 3. Fig. 2. The same species; first two segments and prostomium shown from ventral surface, I prostomium, II first segment without any setae, III second segment with its four pairs of setae (the dorsal- most seta of each outer pair is not visible in this view). Fig. 3. A section through the body of the same species showing the ventral position of the pairs of setae. (After Eisen.) termed segments or somites. At the head the mouth is surrounded by the first of these, and on the dorsal surface of that segment is a projection like an in- complete segmen
. Earthworms and their allies . Fig. 2. Fig. 3. Fig. 2. The same species; first two segments and prostomium shown from ventral surface, I prostomium, II first segment without any setae, III second segment with its four pairs of setae (the dorsal- most seta of each outer pair is not visible in this view). Fig. 3. A section through the body of the same species showing the ventral position of the pairs of setae. (After Eisen.) termed segments or somites. At the head the mouth is surrounded by the first of these, and on the dorsal surface of that segment is a projection like an in- complete segment which is known as the prostomium. From the xmth segment to the middle of the xxth the body has a different appearance, and this region is
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Keywords: ., bookauthorbeddardf, bookcentury1900, bookdecade1910, bookyear1912
