British Enchytrssids. By Rev. H. Friend. 583 



of the setae per bundle, the shape of the nephridium and sperm- 

 funnel, the point of origin of the dorsal vessel, and the position of 

 the oesophageal glands. 



British Records, — Lambay, Ireland (Southern, Irish Naturalist, 

 1907, xvi. pp. 70-1, with plate). Also counties Kerry, Dublin, 

 and Meath (Southern, Contributions, p. 146, with table of differences 

 between H. nasuta and H. hibernica). Not yet known in England. 



5. Henlea puteana Vejdovsky, 



This species was first described in 1877 as a species of Enchy- 

 triBus, but was transferred to this genus by Michaelsen in 1889. 

 It is at once distinguished from all others by the presence of two 

 pairs of spermathecffi. This is, as Beddard remarks, a unique 

 characteristic, no other Enchytneid having as yet been found 

 possessed of this peculiarity. Length about 15 mm., with 20 or 

 more segments. The setie number as many as 8-10 per bundle, and 

 the ventral sets usually contain more than the dorsal. The brain 

 is longer than broad, and is, as usual, concave before and behind. 

 The dorsal vessel is enlarged in segments 7, 8 and 9, and the 

 spermathecffi open in the intersegment 3/4 and 4/5. The species 

 seems at present to be Httle known. I found it in large quantities 

 some time ago, but before I could examine the specimens they had 

 died from being confined in a bottle, so that I was unable to add 

 observations from living material. I found very long, much coiled 

 sperm-ducts ; the segments sometimes numbered 50 ; the setae 

 were usually about 8 per set, but the worm was identified by the 

 two pairs of spermathec<e. 



British Record. — Under moss and algae, where water trickles 

 over a wall in Ledbury Churchyard, Easter Monday, April 17, 1911. 



6. Henlea rosai Bretscher. 



This was the first species to be discovered and described after 

 the new genus had been formed. It, therefore, has no synonyms. 

 The creature is white, about 5 mm. in length, with an average of 

 25 segments. The setae are straight, of equal length, 5-8 per 

 bundle. Brain almost as long as broad, concave in front, straight 

 behind. Salivary glands short, stout, and unbranched. Nephridia 

 with small anteseptal forming the funnel ; broad postseptal lessening 

 posteriorly into the duct. Spermatheca formed of a simple sac and 

 duct, the latter about ^rd the width of the former. 



Bretscher has supplied two or three different descriptions, which 

 vary somewhat in certain details (^), and Michaelsen has given an 

 account of it from Bretscher's first description in Das Tierreich, 

 X. pp. 68-9. Found in various Swiss localities. My own notes 

 relating to the English form, which I place here, are as follows : — 



