12 Transactions of the Society. 



numerous additions to our native lists, as well as several note- 

 worthy discoveries of species new to science. Those belonging to 

 the genus Fridericia, so far as they have up till the present been 

 worked out, will be included in the following notes. 



Three plans present themselves to my mind for the survey of 

 the British species of Fridericia, two of which are chronological, 

 and one systematic. It would be well in some respects to take 

 the species in the order in wliich they were described by their 

 discoverers, as 1877 F. leydigi Vejd., 1895 F. agricola Moore, and 

 so on. I think, on the whole, it may be best to arrange the 

 species according to the year in which they were first recorded as 

 British, closing with a tabular view which will enable the student 

 readily to see how the different species may be distinguished. 



I commenced the study of Annelids in 1890, but during the 

 first year or two my attention was mainly directed to the larger 

 species known as Lumbricidre. While residing at Bradford during 

 the early nineties, I found large numbers of Enchytraids at 

 Apperley Bridge, Esholt, Idle, Bolton, and Eccleshill. Many of 

 these belonged to the ether genera of the family, as Enchytrmis, 

 Buchholzia, and Marionina. Beddard's Monograph appeared in 

 1895, and immediately after obtaining a copy I commenced the 

 more systematic study of the British forms. My authentic records 

 begin with the year 1896, from which year we may date our know- 

 ledge of British Fridericias. I proceed to name the British species. 



1. Fridericia lohifera Vejdovsky. 



Described in 1879 as Fnchytr/ims lobifer Yej., this is a whitish 

 worm of some 55-60 segments ; length 15-20 mm. The setse 

 number about six in the ventral and four in the lateral bundles 

 anteriorly, with two per set posteriorly. The brain is longer than 

 broad, slightly concave behind, and projecting in front. The 

 salivary glands, or peptonephridia, are much branched, and the 

 spermathecffi have about half-a-dozen glands or appendages, which 

 take the place of the more usual diverticula. 



Beddard, Monograph, p. 347. Michaelsen, Das Tierreich, x. 

 pp. 98-9. 



British Piccords. — Cockermouth, January 1896 ; Carlisle, by the 

 Eden, January 1898 ; Dirleton, Scotland, found in a mole's nest 

 by Mr. Evans, F.R.S.E., March 14, 1908 (Southern, Contributions 

 towards a Monograph of British and Irish Oligochfeta, p. 163;. 

 Evans' Oligocluieta of Forth Area, p. 117); Woodville, Derbyshire, 

 November 1910 ; Newton Moss, Cumberland, March 1911 ; Sutton 

 Broad, Norfolk, August 23, 1911. 



2. Fridericia galha Hoffmeister. 



Yellowish or grey when living, somewhat opaque. Setae 4-6 

 per bundle. Brain slightly convex before and behind, about twice 



