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By C.A. A Edwards
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The mouth of the nephrostomal funnel is flattened into two lips, an upper posterior lip and a lower anterior lip. The upper lip is much larger than the lower lip, and forms a semicircular expansion overhanging and projecting beyond the lower lip (Fig. 11). 'It may help the explanation to imagine that an ordinary conical funnel be compressed anterio-posteriorly, one lip much expanded and the lateral ends of the funnel depressed so as to increase the projection of the smaller lip' (Stephenson, 1930).
The coasts of Sardinia and southern France. Eodrilus Michaelsen. Distribution as for Acanthodrilus. Diprochaeta Beddard. (Australia, Queensland, Victoria, Tasmania) New Zealand and islands, India. ) (d) Family OCTOCHAETIDAE Description as for Acanthodrilidae except excretory system meronephric (Gates, 1959). Genera Howascolex Michaelsen. South India, South Madagascar. Octochaetus Beddard. India, New Zealand. Deinodrilus Beddard. New Zealand. Hoplochaetina Michaelsen. New Zealand. Ramiella Stephenson.
The coelomic fluid contains many different kinds of particles in suspension. The inorganic inclusions are mainly crystals of calcium carbonate, but the corpuscular bodies in the coelomic fluid of lumbricid worms include phagocytic amoebocytes, feeding on waste 'llaterials; vacuolar lymphocytes (small disk-shaped bodies which do MORPHOLOGY 19 not occur in worms with large numbers of eleocytes) and mucocytes (lenticular bodies which give the coelomic fluid a mucilaginous component). Other inclusions in the coelomic fluid include breakdown products of the corpuscular bodies, protozoan and nematode parasites, and bacteria.