Mammals from the Upper Congo, 481 



tlie allied species. Hands atid feet wliite. Tail almost 

 naked, finely speckled with brown as in the darker-tailed 

 individuals of Z. hildegardece. Slarnmae 3 — 2 = 10, as is also 

 the case in Z. hilder/ardecf;. 



Skull of about the same size as in hildegardece. Zygomata 

 rather more widely and evenly spaced, their widest point 

 opposite the posterior molars instead of further back. Bulhe 

 slii^-litlv laro-er. 



Incisors longer and more strongly thrown forward, tlie 

 general line of the exposed portion directed forwards instead 

 of being vertical. Molars decidedly larger and heavier. 



Dimensions of the type (measured in tlie flesh) : — 



Head and body 133 mm.; tail <S8 ; hind foot 22; ear 16. 



Skull : greatest length (bone only) 30'8 ; condylo-incisive 

 length (increased by forward direction of incisors) 31'2 ; 

 zygomatic breadth 17*3 ; nasals 12 ; interorbital breadth 4*8 ; 

 palatilar length 15 ; diastema 9 ; palatal foramina 7*4 ; 

 upper molar series (crowns) 5'9. 



This rat is readily distinguishable from its East-African 

 ally, hitherto the only known species of the genus, by its 

 greyer and less drabby colour, more projecting incisors, and 

 larofer molars. 



70. Thryonomys harrisoni, Thos. & Wrought. 

 1210, 1211, 1531. Poko. 



71. Atherurus centralis, Thos. 



1312, 1313, 1343, 1346, 1353, 1364, 1396, 1398, 1406, 

 1499, 1500. Poko. 



72. Mam's gigantea, 111. 

 687. Zambo. 



73. Manis macroura, Erxl. 

 (No number.) Poko. 



74. Manis tricuspis, Raf. 



713, 832, 843. Medje. 



1142, 1207, 1443, 1495, 1501. Poko. 



Ann. & Mag. N. Hist. Ser. 8. Vol. xvi. 34 



