British Enchytr&ids. By H. Friend. 143 



developed ; gland cells small. Three pairs of very large septals. 

 Slender sperm-ducts, with large atrial glands and male pores. 

 Ampullae 3-4 X 1, with collar absent or small. Dorsal vessel 

 about the 19th segment. Though seven distinct specimens were 

 examined, no nephridia could be seen. Salivary glands branched. 

 The brain and spermathecse serve to separate this from every other 

 known British species. • 



Habitat. — Rough place by the wall of Woodboro' Hall Gardens, 

 Notts, December 18, 1912. 



I have notes of other species which it is impossible at present 

 to determine. 



II.— A REVISED LIST. 



So great has been the increase in the number of Enchytrseids 

 known to Britain since the Government aided me in my researches, 

 that the time has come when a complete list should be prepared 

 for the guidance of zoologists. The present contribution to that 

 revised list contains the names of all known British genera and 

 species, except Enehytrseus and the red-blooded group which 

 consists of the two genera Lumbricillus and Marionina. These 

 will form the subject of a later communication. 



For facility of reference, the genera and species will be alpha- 

 betically arranged, and the references will, as far as possible, relate 

 to the original memoirs or principal monographs. Wherever 

 possible the first British record will be cited, and any additional 

 information given which may be deemed necessary for purposes of 

 identification or further research. The Oligochseta volume (Das 

 Tierreich) of Michaelsen is indispensable. 



Ach^eta Vejd. 



Setae wanting ; setee sacs sometimes wanting. Salivary glands 

 unpaired, dorsal. Spermathecse free, not attached to the oesoph- 

 agus. 



1. A. bohemica Vejd. 1879, Anachseta bohemica, Vejdovsky, in 

 Zool. Anzeig., ii. p. 183. Michaelsen, Das Tierreich, p. 103. 

 August 28, 1911, Kew Gardens; See Bulletin of Mis. Inf., xii. 

 p. 374. November 7, 1911 and March 2, 1912, Nottingham, 

 Trans. Notts Nat. Soc, 1910-11, p. 38. March 11, 1913, Dublin, 

 Irish Nat., 1913, p. 171. 



2. A. cameranoi Cognetti. 1889, Anachseta camerani Cogn. in 

 Boll. Mus. Torino, xiv. No. 354, p. 2 ; Michaelsen, Das Tierreich, 

 p. 103 ; July 2, 1911, Acresford near Ashby-de-le-Zouch ; Eriend, 

 in The Naturalist, December 1911, p. 413. " 



3. A. eiseni Vejd. 1877, Achseta eisenii Vejdovsky, in SB. 



L 2 



