8 
Annals of the Transvaal Museum. 
jaw. Tfoot four- jointed, first joint ornamented with a number of hemi- 
spherical knobs, in several series. Spurs broad, divergent, acuminate, 
meeting in middle line or slightly separated. 
General* description, — Length about 380/* when feeding; diameter 
of corona 80/*, collar 75/*, neck /*, trunk 100/*, tip to tip of spurs 30/*. 
The general form is exactly like habita. The rostrum is broad, with large 
lamellae. There are prominences on the neck, on each side of the antenna. 
The jaws are triangular, and slightly constricted below the widest part. 
The ornamented foot is the only important distinction from habita. The 
disposition of the knobs is best understood from the figure. The first 
series contains four equal hemispherical knobs ; the second series two 
similar knobs and a transversely oblong one in the middle line; behind 
that a single median hemispherical knob. No doubt the knobs may vary 
somewhat, but no variation has been noticed. 
Intermediate between C. habita and C. formosa. It resembles habita, 
with the foot ornamented as in the type of formosa. C. gunningi, 
described below, has a superficial resemblance to C. hullata in possessing 
also an ornamented foot, but the knobs are different, only three in number 
on the foot, and there is another knob, on the anal segment. 
Habitat. — Pondoland; abundant. Previously only recorded for Loch 
Treig in Scotland. 
Cillidina gunningi , sp. n. (Plate II, figs, lla-llc). — Specific characters'. 
Large, stout ; corona large, with wide interspace ; lobes of upper lip not 
meeting in middle line ; rostrum broad ; antenna short ; teeth 
2+ 1 /if}-'2 ; foot of four segments, the first bearing three bosses, two 
lateral and one dorsal ; anal segment with dorsal boss ; spurs broad at 
base, divergent, acuminate, without interspace. 
General description. — Length, when feeding, 450/-*, diameter of corona 
120/*, of cheeks 100/*, of neck 75/*, of trunk 140/*, of first foot-joint 40/*, 
across spurs 35/*, length of jaw 35/*. 
The discs are large, measuring between 45/* and 50/*, and they are 
separated by an interspace of almost 30/* ; the central setae, or pencils 
of setae, are very short, and spring from very broad low processes. The 
collar is very inconspicuous, but the skinfolds running from it to form 
part of the upper lip increase in thickness towards the lip, and end in two 
prominent lobes, which are separated by a very deep sulcus, through which 
can be seen the “ bridge ” joining the two pedicels. The cheeks are 
bulging, and are separated by a constriction from smaller prominences 
just over the neck. The jaws are almost semicircles in outline, and have 
thickened borders. The principal teeth are thick, and the smaller striae 
are conspicuous. 
The central trunk is barrel-shaped, and is longitudinally plicate with 
few broad folds. The rump is sharply marked off from the central trunk, 
and its two segments, though short, are clearly separable. The anal 
segment has a large dorsal boss or projection, on its posterior margin, just 
at the anus. The three processes on the first foot-joint are very prominent. 
The second foot-joint is short, and has no processes. 
The stomach is voluminous, and its walls are filled with large globules 
or granules. The lower portion of the canal, next the intestine, is distinctly 
