90 D. BRYCE ON FIVE NEW SPECIES OF BDELLOID ROTIFERA. 



visible even from the dorsal side and add to the apparent width 

 of the collar. 



When extended the body is moderately stout and the longi- 

 tudinal skin-folds are well marked. In most cases it is colourless, 

 but examples of a faintly reddish colour have been seen. The 

 antenna is short, but rather stout. The rami are small, 14-15 tt 

 long. 



The foot tapers rapidly and is very short. In the feeding 

 position it is usually hidden beneath the trunk. It seems un- 

 suited for crawling on a smooth surface such as glass, as the 

 animals have unusual difficulty in getting foothold. The first 

 joint has frequently a strong protuberance on its dorsal side. 

 The spurs are very small cones about 3 /x long separated by an 

 interspace about 6 /x wide. 



The largest examples measured were about 200 jx long when 

 extended, but others were from 170 to 185 /x. My earliest speci- 

 mens were found in mosses collected for me on Cader Idris by 

 Mr. D. J. Scourfield in 1895. Others came from collections on 

 Mickle Fell and on Snowdon by the same friend. In 1898 

 I found it in moss from the top of Ben Ledi, in 1907 from the 

 top of Ben Vrackie, both in Perthshire ; and in 1906 from tree- 

 moss in the woods above Triberg in the Black Forest, Baden. It 

 has also been found repeatedly by Mr. James Murray in Scotland 

 and in many foreign habitats. 



Distribution : cosmopolitan, mostly at high elevations. 

 Habitat : ground, rock or tree-mosses. 



Habrotrocha ligula sp. nov. (PI. 9, fig. 2). 



Specific Characters. Moderately slender. Corona somewhat 

 wider than collar ; pedicels rather high, semi-adnate ; discs 

 separated by narrow sulcus. Upper lip rising very slightly and 

 displaying a small fleshy tooth, which near its apex tapers 

 suddenly to a point. Rami with four teeth each. Foot three- 

 jointed ; spurs small, tapering cones with interspace nearly equal 

 to their length. 



