British Enchytrseids. By Rev. H. Friend. 263 



always in segment 9/10, with large postseptal, and duct of similar 

 length arising at a point behind the septum. Coelomic corpuscles 

 large, somewhat Henlean in character, nucleated, round or oval. 

 Chloragogen cells sparse in segments 4, 5, and 6, then abundant, 

 large, and filled with dark granular matter. Found in earth, 

 feeding on living algae. Netherhall, Derbyshire, jSTovember 23, 

 1912 ; Smisby, near Ashby-de-la-Zouch. (See figs. 22 and 23.) 



VI. — Xew Species of Fridericia. 



Although my former paper on this subject (6') contained an 

 account of thirty different species oi Fridericia, the list is still being 

 augmented. During the past year several new species have been 

 found by me in Nottinghamshire and elsewhere, and as they have 

 not yet been described, it is proposed now to supply the necessary 

 details respecting six of them. 



1. Fridericia glandifcra Friend. 



This worm closely resembles F. hulhosa Eosa, and when first 

 discovered was referred to that species. As further specimens 

 were examined, it was found to differ considerably from the type, 

 and was set down as a well-marked variety. Still more careful 

 study led me to conclude that the variations were at once too many 

 and too constant, and that a new species had been discovered. The 

 following are the characters : — 



Length 5-6 mm., sometimes extended to 8 mm. when stretched. 

 Segments 30-35. I have counted 29, 30, 32, 35, and 36 in different 

 specimens. One was 10 mm. in length, and had 40 segments. 

 Including this the average number of segments is 32, and the 

 average length 7 mm. White to the naked eye, with yellowish- 

 brown intestine. Adult forms plentiful during the middle of ]\Iay, 

 as well as in March ; showing girdle, spermathecae, eggs, and all 

 the other organs. Setae four in front (about 2nd to 15th segment), 

 innermost pair short; two per set behind, large. Brain longer 

 than broad, with concave anterior and convex posterior. Salivary 

 glands long, unbranched. Three pairs of septal glands normally 

 placed. Girdle with large gland-cells and large pores. Atrial 

 glands also large ; sperm-funnel (ampulla) 2-3 X 1, with collar 

 (fig. 24). Girdle extends over segment 12 and half 13. Dorsal 

 vessel usually arising at the septum of 16/17. Coelomic corpuscles 

 large, oval, nucleated, Nephridia in posterior part of the body 

 with large anteseptal, postseptal twice as large, and duct stout, 

 formed by continuation of the same. In front, however, the 

 nephridia (fig. 26) may produce the duct from the middle of the 



T 2 



