THE ZOOLOGIST 



No. 787.— January, 1907. 



MUS MUSCULUS vak. M. NUDO-PLICATUS. 



By Aechibald Campbell. 



(Plate I.) 



In May, 1904, when in the shop of a local dealer, my atten- 

 tion was attracted to four Mice of this description. On making 

 enquiries, I was told that they had been bought that morning 

 from a man who said he had come from Australia, but my 

 informant knew nothing more. 



Of the four — one was a full-grown male, slightly smaller than 

 a common wild Mouse, and the other three — two males and a 

 female — looked, from their size, about six weeks old. They were 

 all entirely naked, and the whole body a mass of wrinkles ; in 

 the old male especially they were very thick, and the skin formed 

 a kind of flap which extended along the sides between the upper 

 part of the legs. There was a thick fold of skin across the 

 shoulders, and over the back behind the ears. On the face the 

 wrinkles were very thick above the eyes — which were almost 

 closed by the thick skin-folds above them — down the nose, and 

 on each side of the mouth. The belly was also very wrinkled, 

 the skin forming a cavity out of which the legs came. All trace 

 of hair on the body was gone with the exception of a few dark 

 coloured vibrissse, which they all had, but the young ones still 

 retained a few hairs on the legs and at the base of the tail. The 

 corrugations on these were less pronounced than on the old one, 

 Zool. 4th ser. vol. XI., January, 1907. B 



