KUNQL. SV. VET. AKADEMIENS HANDLINGAR. BAND 58. N:0 2. 71 



The tail of the present specimen is »clubshaped » and may thus liave been broken. 1 It 

 is only about 60 mm. without the long hairs. The general colour above is brownish grey 

 (darker than Rxdgway's »mouse gray»), but on the middle of the back is a large brown 

 patch, something between Ridgway's» snuff brown »and »cinnamon brown ». Theanimal 

 has thus been in the act of shedding its pelage, and the two colours represented indicate 

 evidently the limits between which the colour varies at different seasons of the year. 

 It must thus be taken cum granö salis when some species of this genus are described as 

 grey, and others as »bright buffish brown», because both colours are subjected to great 

 change. 



?Oenomys bachante unyori Thomas (vel nova subsp.). 



1 ? from Masisi, Febr. 1914. 



This specimen is rather young with hardly worn molars, and it is possible that this 

 may explain its small dimensions, but it is perhaps still more probable, that it may repre- 

 sent a different geographical subspecies, smaller and darker than the one the name of 

 which is written above. As there is only this specimen at hand, no definite opinion can be 

 expressed for the present. The upper parts of the head and anterior half of the back are 

 grizzled dark brown and yellowish, the posterior back dark rufous. This colouration is 

 to judge from the description darker than in Oe. b. unyori. The bright rust-red of the 

 snout extends to the eyes, but is darker posteriorly. Ears rufous. Lower parts white, 

 washed with buff. Outer side of hind limbs paler rufous than the back. Hind feet buffy, 

 fore-feet mixed with brown. Inside of hind limbs orange buff, but rather påle. Head 

 and body (skin) 15,5 cm.; tail 14 cm. (thus comparatively shorter than in Oe. b. unyori), 

 hind foot (dry) s. u. 28 mm. Skull: greatest length 31,5 mm.; condyloincisive length 

 29 mm.; zygomatic breadth 14 mm.; interorbital breadth 4,7 mm.; nasals 7 mm.; palatal 

 foramina 6 mm., upper molar series 6,4 mm. The anteorbital plate is vertical. 



Cricetomys. 



Captain Arrhenius's collection contains a very interesting series of Giant Råts 

 of this genus, viz. 10 specimens and an extra skull from Masisi, and a specimen from Beni. 

 This series contains young and adult of both sexes, but even considering age and sex it is 

 by no means uniform. Six of the specimens from Masisi, 2 and the one from Beni ha ve a 

 white belly with a sharp line of demarcation, one specimen from Masisi has a whitish belly, 

 but no sharp line of demarcation, the remaining two specimens from Masisi are dark- 

 bellied. 



The first mentioned ought to belong to the gambianus group, to which quite a mim- 

 ber of subspecies has been described from different parts of Africa. To the West African 

 subregion belong: C. g. poensis Osgood from Fernando Po, C. g. dolichops Osgood from 

 Gaboon, C. g. dichrurus Osgood from Southern Nigeria, C. g. liberice Osgood from Liberia, 



1 Conf. Thomas in Proc. Zool. Soc. II, 1905. 



2 A seventh is a young male about which it is uncertain to which group it ought to be referred. 



