22 



Transactions of the Society. 



grey, glandular, without collar or neck, but with long, slender, and 

 mucii^oiled duct. Altogether a l)ea\itiful and well-marked species. 



SEP 



Fig. 9. — Spermatheca of 

 Fridericia ptdchra Friend. 



Fig. 10. — Salivary gland of Fridericia 

 jyulchra Friend. 



British Eecord.—Kew Gardens, August 28, 1911. I have to 

 thank the Director, Assistant-Director, and staff for their unvarying 

 courtesy and help in these researches. 



27. Fridericia variata Bretscher. 



White to the naked eye, with colourless chloragogen cells. 

 Length 5-6 mm., 27 segments. Dorsal vessel arising in 15 ; 

 coelomic corpuscles, many, large oval or spindle shaped. Setse 

 usually 5 in front, but varying from 4-6, and 4 behind, varying 

 from 2-4, none on segment xii. Salivaries rather long and un- 

 branched. Brain large, straight or convex behind, longer than 

 broad. Nerve-chord enlarged in iront. Spermathecw, without 

 glands or diverticula, opening into the intestine in the middle of 

 the fifth segment. Nephridia in 0/7 and 7/8, with dark anteseptal, 

 as is often the case, though not recorded by our usual authorities, 

 and large transparent postseptal with duct apparently near the 

 end. The hinder nephridia have a small ante- and large granular 

 postseptal. I place it at present with Bretscher's variata, but his 

 own records need a good deal of study. Southern, Irish Naturalist, 

 1907, p. 78, places it on record for Lambay, but regards it as a 

 variety of hulhosa. In 1909 (Contributions, p. 159), he ignores it 

 altogether. I am very familiar with hvlhosa, and if the foregoing 

 is not variata, it is an unrecorded British species which must find 

 a place here till more material has been studied. 



British Records.— {'i) Lambay, 1906; Acresford, near Ashby- 

 de-la-Zouch, October 3, 1911. This locality has proved peculiarly 

 rich in Enchytra^ids of a rare and interesting kind. 



During the month of August I was privileged, through the 

 great courtesy of Sir Eustace and Mr. Eobert Gurney, to spend a 

 fortnight in research on the Norfolk Oligochrets in their Labora- 

 tory on Sutton Broad. My results have not yet been completely 

 worked out, but the careful notes made on new and rare species 

 lead me to think that our list maybe further extended thereby. I 

 have definite records of F. hulhosa, F. ratzcli, F. hisctosa, F. michacl- 



