528 PROCEEDINGS OF THE ACADEMY OF [1896. 



most closely to spinosissimus. One specimen (No. 3,872), a young 

 adult male, resembles Peters' figure,^'' except that it wholly lacks 

 any rufous tinge ou the uniformly olive-black upper pelage. The 

 skull of this specimen is so like that of several others taken about 

 the same time that I am induced to consider them the same species. 

 Two very old adults (Nos. 3,868, 3,873), $ and 9 , are blackish- 

 chestnut on back and upper head, and bright rusty cinnamon along 

 the sides, the under parts and feet white. The total length of the 

 old male is 195 mm. ; length of the tail, 93 ; of hind foot, 17. The 

 length of the skull is 29 mm., while that of the dark specimen (I. c.) 

 is 2 mm. shorter. Two other hardly adult specimens (Nos. 3,863, 

 3,864) are somewhat intermediate in color between the dark and 

 light examples, with which their cranial characters affiliate them. 

 Their bellies and feet, however, are as white as in the old adults. 



Briefly stated, this series, if representing one species, as I am in- 

 clined to think it may, indicates an animal, which in the old adult 

 stage, is much redder above and whiter below than Peters's descrip- 

 tion of spinosissimus, which corresponds with the n)ore immature 

 forms. It is possible that the dark specimen only is referable to 

 Peters's species and the others to some andescribed form. 



The adult female contained three large embryos. As the animal 

 grows older the tubercles on the feet become more prominent and 

 interspersed with granulations. The two specimens from Fiuik 

 near Webi Shebeli (Nos. 3,877, 3,878) are not different from the 

 other rusty specimens. The young one is pale fawn and seems to 

 show that the dark olive coloration is not a character of immatur- 



Specimens in alcohol ; collection of the Academy of Natural Sci- 

 ences of Philadelphia: 



No. 3,863 .?, Aimola, March, 12, 1895. 



No. 3,864 9, LakeAbaya, . . . May 10, 1895. 



No. 3,865 9 , Aimola, ..... March, 12, 1895. 



No. 3,866 S, BerMadu, .... February 16, 1895. 



No. 3,867 ^, Aimola, March 14, 1895. 



No. 3,868 9 , Aimola March 14, 1895. 



No. 3,869 Foetal, Aimola, March 14, 1895. 



No. 3,870 Foetal, Aimola, March 14, 1895. 



:5fo. 3,871 Foetal, Aimola, March 14, 1895. 



" Reise n. Mossamb., 1852, pi. XXXIV, fig. 1. 



