Annals of the Transvaal Museum. 
13 
preanal, and anal segments are ligular and expanded upwards ; in the 
type they are stout spines with bulbose bases. The five processes forming 
a transverse row on the anal are also ligular, and they are widely divergent 
and separated ; in the type they are very broad, leaf-like, imbricated. 
Mniobia scabrosa Murray (27).- — Discovered in Uganda (Pearce) 1907, 
but only recently described ; it is now known alsfl in New Zealand and 
Australia. 
Rotifer longirostris (Janson) ( 15 ) ; synonym, Callidina longirostris 
Janson. — Bousselet’s record of R. tardus for Natal, doubtless based on 
Kirkman’s note, probably refers to this species, which is very common in 
Africa. The variety (or perhaps only “ state ”) fimbriata Murray (24) is 
commoner than the type. 
Habrotrocha angusticollis Murray ( 20 ). — Besides the usual brown 
cases, hyaline cases were noted. 
H. ampulla Murray (27). — First found by Pearce (1907), but only 
recently described ; it is now known also in Australia. 
H. eremita (Bryce) (4). — Apparently a rare species, but commoner in 
Africa than elsewhere. 
H. perforata (Murray) (24).— Though a common species in tropical 
and sub-tropical countries, the foot had never been seen. This was owing 
to the difficulty of getting the animal out of its shell. In Cape Colony 
dead examples were found without shells, and several new features were 
discovered. There is' a small dorsal “ tail ”, like that of H. caudata, which 
occupies the posterior tube of the shell. Beside the anus there is another 
process, blunt and conical. The foot is very short, but apparently of two 
joints between the anus and the spurs. The spurs are very short and 
obtuse, and are separated by a wide interspace (Plate III, figs, \la-\lc). 
H. caudata Murray (27). — Only recently described from tropical 
Africa, the species is now known also in Australia. 
H. acornis Murray (27). — Decently discovered in British East Africa ; 
not yet known except in Africa. 
H. auriculata Murray (27).— Decently discovered in British East 
Africa, and now known in Australia. 
Habrotrocha cucullata, sp. n. (Plate III, figs. 20a-20<7). — Specific 
characters : Small, slender ; trunk papillose ; rostrum constricted between 
the two joints, lamella forming a single spoonshaped hood ; corona small ; 
antenna slender, length equal to the diameter of the neck ; teeth about 
four in each jaw ; foot very short ; spurs narrow, tapering, divergent, 
without interspace. 
General description. — Extreme length when extended 300^. The 
trunk is of a pale yellow colour, and is closely plicate and papillose. The 
neck and foot are smooth and colourless. The body is of characteristic 
form, having pronounced constrictions which habitually return after all 
the changes of form. One such constriction is at the ba e of the ter- 
minal joint of the rostrum ; another is in the anterior part of the trunk. 
The widest part of the central trunk varies in position with the movements 
