286 Transactions of the South African Philosophical Society. 



tion, but I have obtained two old animals which undoubtedly show 

 the second set of teeth. From these specimens it would appear that 

 with the approach of old age the teeth of the first set become 

 loosened and shed, and are replaced by a complete second set of 

 incisors, canines, and premolars. The true molars are shed shortly 

 after the first set of anterior teeth, so that they become lost about 

 the time the second set of anterior teeth become functional. In the 

 only two specimens I have obtained with the undoubted second set 

 of anterior teeth the true molars are loose and partly shed, and yet 

 the anterior teeth are not yet all fully functional. One of the speci- 

 mens was an old female obtained on November 13, 1906, in whose 

 upper jaw all the teeth of the second set are seen except the left 

 middle premolar, which is not yet through the gum. Of the true 

 molars the 2nd and 3rd of the left side and the 3rd of the right side 

 have been shed for some time, and the 1st on both sides is quite 

 Joose and about to be shed. In the lower jaw the true molars are 

 still in position, but quite loose and about to drop out. As the 

 molars cannot be replaced the animal, if it survives long after the 

 tooth change, must be left with only incisors, canines, and pre- 

 molars. The teeth of the second set are all smaller than those of 

 the first set, and the premolars are distinctly shorter antero- 

 posteriorly. 



Chrysochloeis wintoni, Broom. 



In 1897, when living at Port Nolloth, [ obtained two specimens of 

 the mole of that locality, but not having seen C. asiatica I inferred 

 that my specimens belonged to the common species, and both were 

 made use of foif anatomical purposes. Sclater refers to the occur- 

 rence of C. asiatica at Port Nolloth, and the specimen on which this 

 reference is based is fortunately in the South African Museum. I 

 have examined it, and am quite satisfied that it is worthy of specific 

 rank. 



The nose pad measures 8 mm. in width and 4 mm. in length. 

 The anterior digging portion is more prominent than in C. asiatica, 

 and the outer corners of the pad are rounded and not produced into 

 sharp points, as is invariably the case in G. asiatica. 



The dorsal fur is light grey with a tinge of yellow. On approach- 

 ing the forehead the yellow becomes more marked, and the whole of 

 the front of the head, cheeks, and lips are pale yellow. Underneath 

 the general colour is a slightly lighter tint of grey than on the back. 



In size the animal is considerably smaller than C. asiatica, and 

 differs most strikingly in the structure of the front foot. Whereas 

 in C. asiatica the 1st claw is small and the 4th rudimentary, in C. 



