JBritish Enchytrseids. By Rev. H. Friend. 585 



matter, I provisionally enter it here. Should further research show 

 it to be wrongly placed, we shall yet have an authentic record. 



British Record. — Among zoophytes, seaweed and debris on the 

 shore, St. Anne's-on-Sea, 1898. Friend in the Naturalist, Sept. 

 1911, p. 321 ; the Zoologist, December, 1911, p. 465. 



8. Henlea perpusilla Friend. 



Length of adult 2-3 mm., with 25-30 segments. White, trans- 

 parent. Setffi as few as 2 and as many as 8, usually 4-6, those 

 behind long and equal, those in front shorter and unequal in length. 

 Girdle covers segment 12 to setie of 13, cells not in distinct rows 

 nor sharply defined. Internally we find the brain varies with 

 tension. When at rest it is nearly or quite twice as long as l)road, 

 concave in front and straight or slightly convex behind. (Esophagus 

 suddenly merges into intestine in Sth segment, and chloragogen 

 cells commence in 7. Septal glands do not differ from the normal. 

 Coelomic corpuscles appear cigar-shaped or elliptical when floating 

 in the body, but become circular or discoid when free. Dorsal 

 vessel arises in segment 9, while in 8, 7, 6 there is an enlarged 

 pulsating vessel. In front of segment 6 the vessel contracts, and 

 the blood appears to be shot through the narrow portion. No 

 salivary glands seen. Nerve enlarged in front, and pharynx 

 avertible. Spermathecte destitute of glands and diverticula. No 

 oesophageal glands. Sperm -funnel small, pear-shaped, hardly 

 longer than broad, with very narrow duct. Nephridia vary some- 

 what in different parts of the body. 



British Record. — Soil in ditch at Cauldwell, near Burton-on- 

 Trent, July 9, 1911. Friend in the Naturalist, September 1911, 

 pp. 320-1; the Zoologist, December 1911, pp. 466-7. 



9. Henlea tenella Eisen. 



Described in 1878 as Arr.Menchytrivvs tenellus, it was placed by 

 Michaelsen (Das Tierreich, x. p. 70) among the uncertain species 

 of Henlea. It is stated to be 8-10 mm. long, with about 50 seg- 

 ments. Setffi 4-5 per bundle. Brain about as lon^ as broad, 

 clearly notched before and beliind. Large corpuscles, flat, broad, 

 oval or circular. Duct of nephridiuni a]3out as long as postseptal, 

 from whose anterior portion it arises. Sperm-funnel spindle-sliaped, 

 stout, more than twice as long as its greatest width. Penis (.'') 

 much smaller than the funnel. Simple spermathecce 



I do not know whether Eisen means the large pores or the 

 atrial glands on segment 12 when he speaks of the penis, but 

 possibly he includes the two, which are intimately associated. In 

 the Zoologist, December 1911, p. 468, I have added to my article 



