' AN OLIGOCHJ^TE WORM. 319 



rarely sees such convincing evidence as a transverse section 

 passing through the male opening of one Enchytrseid and the 

 spermathecal opening of the other. The Enchytrseids wei'e 

 evidently killed and fixed just after the sperms had been actually 

 transferred to the spermathecse by means of the sperm-ducts. 



. (2) Confirmatory Observations. . 



After a fairly exhaustive examination of the nephridia and 

 coelomic corpuscles, I have been able to confirm the excellent 

 observations of Goodrich (7) in most particulars. 



In conckision, I must thank the Birmingham Natural History 

 Society for helping me in this work by means of a grant from 

 the Endowment of Research Fund, and I should also like to 

 express my deep indebtedness to Professor Gamble for his kindly 

 help and most valuable criticism. 



Literature. 



(1) Beddard, F. E. — A Monograph of the Order of Oligochajta. 



Oxford, 1895. 

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Species of Pachyclrilus.^' Proc. Roy. Phys. Soc. Edinb. x. 



pp. 101-106, pi. V, 



(3) Cepede, C. — " Recherches sur les Infusoires Astomes." 



Arch. Zool. exp. ser. 5, iii. p. 554, 1909-10. 



(4) Claparede, E. — " Etudes Anatomiques sur les Annelides 



" Mem. Soc. Phys. Geneve, xvi. pp. 71-164, 



pis. i.-vii. 



(5) Friend, H.— " New British Annelids." Zoologist, 1899. 



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(7) Goodrich, E. S. — " Notes on Oligochaetes, with the Descrip- 



tion of a new Species." Quart. Journ. Micros. Sci., n. s. 

 vol. xxxix., 1896. 



(8) MiCHAELSEN, W. — Untersuchungen Uber Enchytrceus mobii 



Mich, und andere Enchytrseiden. Kiel, 1886. 



(9) MiCHAELSEN, W. — " Synopsis der Enchytraeiden," 1889. 



(10) MiCHAELSEN, W. — " Oligochjeta," in Das Tierreich. Berlin, 



1900. 



(11) Southern, R. — "Notes on the (jQXiwa Enchytroius . . . ." 



Irish Naturalist, vol. xv., 1906. 



(12) Southern, R. — " Contributions towards a Monograph of the 



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