ON THE ANGUILLULID^. 123 



of which are rouuded. Head having no setae or papillae. Caudal sucker none. Inte- 

 gumental striae transverse, jwro" apart, easily visible. 



Dart unre" long, simple, not knobbed at the base. (Esophagus ^jth only of total 

 length, having a globular and distinctly muscular terminal swelling, x^oo" broad. In- 

 testine, portion next oesophagus very indistinct ; granules scattered, rather coarse and 

 colourless. Amis ^^" from posterior extremity. Vulva posterior to commencement of 

 hinder third of body, ^" from posterior extremity. Excretory duct opening slightly 

 posterior to commencement of intestine. 



Hale, not seen. 



Sab. Between the lower sheaths of leaves of oats from stubble-field, Broadmoor, Berks. 



2. A. viLLOSUS, n. sp. (Plate X. figs. 99-101.) 

 Female, length -g^", breadth xwo"- 



External Characters. — Body tapering very slightly anteriorly, bu.t narrowing to a point 

 posteriorly ; shaggy from the presence of a hair-like fungus (?) growing on integument. 

 Sucker (?). Head rounded, naked. Striae transverse. 



Spear ^ ^q q" long, simple. (Esophagus xtjtb of total length ; terminal muscular swell- 

 ing gt/oo " in diameter. Intestine sparingly covered with granules. Anns two" fi'om 

 posterior extremity. Vulva at commencement of posterior third of body. Excretory 

 duct opening at 2-^" from anterior extremity. 



Hale, length -^", breadth x^oo"- 



Anus about the same position as in female. Spicules roW loug, narrow, curved, 

 slightly knobbed at upper extremities. 



Sab. With Flectus p>arietimis, in tufts of moss {Tortula), Broadmoor, Berks. 



3. A. PARiETiNus, n. sp. (Plate X. figs. 102, 103.) 

 Female, length ^", breadth g^". 



External Characters. — Body pellucid, tapering very slightly forwards, but to a point 

 backwards, where it appears to terminate in a sucker. Head almost truncate. Trans- 

 verse striae ^oooo" apart. 



Spiear simple, -g-^oo" long. (Esop>hagus -ri^^ of total length ; terminal swelling aifoo" 

 in diameter. Intestine covered by a few scattered granules; internal tube well seen. 

 Anus YTo" from posterior extremity. Vulva at commencement of posterior third of 

 body. Excretory duct opening at -^" from anterior extremity. 



Male, not seen. 



Hab. With Flectus piarietitius, in patches of yellow lichen (Farmelia parietina), Broad- 

 moor, Berks. 



4. A. PYRi, n. sp. (Plate X. figs. 103 a-103 c.) 

 Female, length ^", breadth x^To "• 



External Characters. — Body naked, pellucid, filiform, tapering slightly at both extre- 

 mities ; sucker doubtful. Head narrowed, rounded. Integimiental striae not visible. 



Spear simple, ^ 5^0 " long. (Esophagus rtjth of total length ; terminal swelling large, 

 ao\)o " ill diameter. Intestine very sparingly covered with a few light-coloured granules. 



R 2 



