264 }31-X'0HDS OF THK AUSTRALIAN MUSEUM. 



is some sli,ii,lit evidence that this penial chamber is e\'ei'sible, 

 when it would correspond only to the penial sheath of i^. htcvstris. 



If this chamber is really eversible, we must probably conclude 

 that copulation does take place, and if so, the only sac capable of 

 receiving spermatozoa is the muscular sac, which would thus 

 function as a spermatheca. 80 that whatever may be the true 

 homologies of these parts, the distinctness and peculaiity of the 

 new genus ai-e sufficiently striking. 



BIBLIOGRAPHY. 



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Join-. Micro. Sci., xxxiii., p. 525. 



2. Beddard, 1894. Naiden, Tubificiden, und Terricolen, 



Eryeh.Haoihurii Mcujalh. SammeJr., p. 9. 

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(Jnart. .Tourn. Micro. Sci., xlviii., 271. 



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Schweiz, Rev. Snissc ZooL, viii., p. 11- 

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Quart. Journ. Micro. Sci., xxxvii., p. 

 253. 



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Ja])on., iii., 103. 



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524. 



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Froc. Acad. Xat. Sci. FhiJadcL, p. 

 359. 



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Soc. Xatur. jS'apoIi., xvi., p. 5. 



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Zool., ii., pp. 228 and 235. 



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7'(fri)io., xvi., no. 387. 



