D. BRYCE ON FIVE NEW SPECIES OF BDELLOID ROTIFERA. 87 



Habrotrocha munda occurs most frequently in pools, especially 

 when water-mosses and anacharis are present. I have also found 

 it occasionally in sphagnum and in confervae, both in floating 

 masses and in the growth upon submerged stones. In suitable 

 situations it makes for itself a rough case or nest of the same type 

 as that produced by Rotifer macroceros. 



It is of cosmopolitan distribution. I have noted it for 

 England, Scotland, Germany (Baden, Black Forest, Wurtemberg, 

 Stuttgart), Cape Colony. 



Habrotrocha torquata sp. nov. (PL 8, fig. 2). 



Specific Characters. Of medium size and stoutness. Corona 

 equal to or rather exceeding collar ; pedicels short, distinct ; 

 trochal discs more or less dorsally inclined. Upper lip moderately 

 high, undivided but centrally slightly reflexed ; under lip 

 unusually high, yet scarcely prominent. Dorsal antenna rather 

 long. Kami with six or more fine teeth. Spurs short, divergent, 

 conical. 



When creeping about, H. torquata is somewhat difficult to 

 recognise, as it lacks any conspicuous peculiarities of form, colour 

 or size. It is perhaps most usefully described by comparison with 

 other species of the same genus having similar many-toothed 

 rami. The body is of moderate dimensions, less spindle-shaped 

 than in H. munda, but less parallel-sided than in H. elegans 

 (Milne). The rather short foot is longer and more distinct than 

 in the latter species, but is less so than in H. constricta (Duj.). 

 The spurs are simple short cones of moderate stoutness, and are 

 held at almost a right angle, differing thus from the slighter and 

 widely divergent spurs of H. constricta, the short, peg-like, very 

 slightly divergent spurs of H. elegans (Milne) and the com- 

 paratively long moulded spurs of H. munda. In most examples 

 the stomach is not obviously tinted, but is occasionally of a 

 yellowish colour, yet never of the reddish shade frequent in 

 H. munda, H. auricidata, and other species. 



In habit it resembles H. constricta ; that is to say, it lives in the 



