. Fig. 9. Enchytraeus australis; cerebral ganglion; both forms were observed. Fig. 10. Enchytraeus australis; male funnel. Fig. 11. Enchytraeus australis; spermatheca. As seen in specimens mounted whole, the spermathecal ampulla (Fig. 11) is of rela- tively small size, irregular in form, with a bulging on one side; in sections most of the series show it to be somewhat compressed antero-posteriorly; spermatozoa are seen pushing their heads into the epithelial lining; and there is a patent communication with the oesophagus. The duct is cylindrical, of some length—longer than the ampulla, but rat
. Fig. 9. Enchytraeus australis; cerebral ganglion; both forms were observed. Fig. 10. Enchytraeus australis; male funnel. Fig. 11. Enchytraeus australis; spermatheca. As seen in specimens mounted whole, the spermathecal ampulla (Fig. 11) is of rela- tively small size, irregular in form, with a bulging on one side; in sections most of the series show it to be somewhat compressed antero-posteriorly; spermatozoa are seen pushing their heads into the epithelial lining; and there is a patent communication with the oesophagus. The duct is cylindrical, of some length—longer than the ampulla, but rather narrow (26/x) where not covered by glands; it is well marked off from the ampulla. The ectal half or rather more of the duct is covered all round by a glandular lobed mass, which as usual consists of the cells which line the lumen of the duct elongated and pushing outwards through the fibres of the muscular coat. There are no copulatory glands. For some time I thought it possible that the present specimens might be referable to Vejdovsky's Etichytraeus bnchholzi, a common European species which has also been recorded from the Straits of Magellan (Ude, 1896). I have, however, decided to separate them as a new species on the following grounds: (i) The number of segments—round about 40 in a considerable number of examples, as against 25-28 in E. bnchholzi. 4-2
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