Annals of the Transvaal Museum. 
19 
Pig. 7 a. 
7 6. 
8 6. 
8c. 
9. 
10a. 
106. 
10c. 
11a. 
116. 
He. 
12a. 
126. 
Fig. 
13a. 
136. 
14. 
15a. 
156. 
16a. 
166. 
17a. 
176. 
17c. 
18a. 
186. 
19a. 
196. 
19c. 
\M, 
19e. 
20a. 
206. 
20c. 
20d . 
20e. 
20 /. 
C. plicatula Murr. 
The same ; foot. 
EXPLANATION OF PLATE II. 
Callidina multispinosa Thomp. ; variety with some ligular processes. 
The same ; jaw. 
The same ; one ligule. 
C. midtispinosa ; variety similar to 8, but with more of the ligular processes 
(from East Africa). 
C. bullata Murray. 
The same ; jaw. 
The same ; side view of foot. 
C. gunning i Murray. 
The same ; head and rostrum, ventral view. 
The same ; foot, showing knobs and toes. 
C. heivitti Murray. 
The same ; side view of foot. 
EXPLANATION OF PLATE III. 
Callidina multispinosa Thomp. ; variety with processes swollen below. 
The same ; jaw. 
C. multispinosa, another variety. 
C. pinniger Murray. 
The same ; jaw. 
C. multispinosa ; short-spined variety. 
The same ; spurs. 
Habrotrocha perforata Murray ; side view of an animal without its shell, showing 
the two dorsal processes, and the spurs. 
The same ; shell containing an egg. 
The same ; dorsal view of foot, showing spurs and second dorsal process. 
C. multispinosa ; short-spined ‘erose” variety. 
The same ; jaw. 
Habrotrocha, sp. 
The same ; jaw. 
The same ; side view of penultimate segment, showing annular swelling. 
The same ; spurs. 
The same ; rump and foot. 
Habrotrocha cucullata Murray. 
The same ; head, rostrum, and hood. 
The same ; side view of hood. 
The same ; jaw. 
The same ; side view of foot. 
The same ; spurs. 
