Southern — Monograph of the British and Irish Oligochceta. 157 



Enchytraeus argenteus Mchlsn. 



1897. E. pciTVulus, Friend in Zoologist (4), vol. i., p. 349. 

 1900. i^'. «., Michaelsen in Tierreich, X., p. 91. 

 1907. E. a., Southern in Irish Nat., vol. xvi., p. 72. 



This species is of some economic importance, as it attacks the roots of 

 some garden plants, such as asters, celery, &c. 

 June, September, December. 



Habitat — Ireland. Co, Dublin (Kilmashogue) ; Co. Donegal (Milford). 

 Distrihutiooi — British Isles ; Germany ; Switzerland. 



Enchytrseus turicensis Bret. 



1899. E. t., Bretscher in Kev. Suisse ZooL, vol. vi., p. 401. 



1899. E. minimus, Bretscher in Eev. Suisse Zool., vol. vi., p. 402. 

 1907. E. minimus, Southern in Irish Nat., vol. xvi., p. 72, PI. 18, fig. 4. 



These tv^^o last species have had a chequered career. In the Tierreich, 

 Michaelsen suggested that E. minimus was identical with E. argenteus, and 

 E. turicensis with. E. Bucholzii. Bretscher, in 1902, admitted the probability of 

 the latter identity, but again denied it in 1903. I have found three species of 

 Enchytrseus commonly in Ireland. Two of them undoubtedly answer to 

 the descriptions of E. Bucholzii and E. argenteus. The third is quite distinct 

 from either of these, and agrees equally well with the numerous descriptions 

 given by Bretscher of E. turicensis and E. miniiinia. A close examination of 

 these descriptions fails to show any specific distinctions, and I have accordingly 

 regarded them as synonyms, E. turicensis having priority. 



February, March June-December, 



Habitat — Ireland. Co. Kerry (Glencar) ; Co. Dublin (top of Montpelier}. 

 Scotland. In a mole's nest at Dirleton. 



Distrihution. — Switzerland. 



Enchytrseus Bucholzii Vejd. 



1900. E.B., Michaelsen in Tierreich, x., p. 90. 

 190G. E.B., Southern in Irish Nat.., vol. xv., p. 184. 

 1907. E.B., Southern in Irish Nat., vol. xvi., p. 72. 

 February, March, May, November. 



Habitat — Ireland. Co. Dublin (Friarstown Glen). 



Scotland. Edinburgh. 

 Distribution — Europe ; South America. 



