Mammals from the Upper Congo. 479 



63. Hybomys univittatus, Pet. 



725. Avakubi. 



771, 835, 838. Medje. 



1)13, 972, 1032, 1016, 1069, 1072. Poko. 



As usual, very variable in size and colour. 



64. Mylomys alberti, Tlios. 

 T. c. p. 148. 



£.1231; $.1237. Poko, Welle. 



A most handsome species. Named after His Majesty the 

 King of the Belgians. 



Owing* to the original label having fallen off, the measure- 

 ments in my description were taken from the skin. Now, 

 however, the label lias been found, and the flesh-measure- 

 ments taken by Dr. Christy may be recorded as follows : — 

 Head and body 180 mm. ; tail 165; hind foot 36; ear 21. 



65. Arvicanthis striatus, L. 



724. Bosabangi. 



905. Panga. 



921, 938, 946, 1322, 1323, 1333, 1336, 1384, 1414, 1415, 

 1461, 1462, 1464, 1475, 1476, 1477, 1478, 1511. Poko. 



Allowing for their variation in colour according to freshness 

 of fur, there seems remarkably little difference between these 

 specimens and the E. -African A. massaicus, on the one hand, 

 and true W.- African A. striatus, including A. pulchellus, on 

 the other. 



66. Arvicanthis micropus, Hell. 



911, 1463. Poko. 



Described by Heller as a subspecies of A. pulchellus ; but, 

 as that species (i. e., A. striatus) is abundantly represented at 

 Poko, this reference would seem to be incorrect. Intermediate 

 in size between A. striatus and A. macculus. 



67. Arvicanthis macculus akka, subsp. u. 



943. Poko. (Type a specimen obtained by Emin Pasha.) 



General characters as in true macculus of Ruwenzori and 



Uganda, but the general greyish colour strongly suffused 



with cinnamon and the intermediate dorsal light stripes much 



