634 



MILLER 



Sk2(IL—T\\e skull of Sciurits rtifobracJiiatus Uberic7is is longer 

 and relatively narrower than in the Benito River form of the species. 

 The nasal branch of the maxillary is extended behind that of the 



premaxillary so as 

 nearly to reach rim 

 of orbit (fig. 39). 

 Audital bull£e larger 

 than in specimens 

 Fig. 39.— « Sciunis rufobrachiatus libericus ; from Cameroon, 

 b S. rufobrachiatus rufobrachiatus. ^^^^j^ antero-poste- 



rior diameter relatively as well as actually much greater. 



Teeth. — The teeth are slightly heavier than in the Benito River 

 animal, but not otherwise different. 



Measurements. — External measurements of type : total length 515 ; 

 tail vertebrae 295 ; hind foot 60 (57).^ 



Cranial measurements of type: greatest length 57.4 (53)'; basal 

 length 49 (44) ; basilar length 46 (42) ; palatal length 24 (22) ; di- 

 astema 12.4 (10.6); length of nasals 18 (16); zygomatic breadth 

 32.6 (31); greatest breadth of braincase 24 (24); mastoid breadth 

 26 (26); greatest diameter of audital bulla 13.6 (11.6); maxillary 

 molar series (alveoli) 11.4 (10.4); mandible 33 (30); mandibular 

 molar series (alveoli) 11. 4 (n)- 



Specimens examined. — One, the only specimen of this squirrel ob- 

 tained. 



Remarks. — The Liberian form of Sciurus rufobrachiatiis appears 

 to be well differentiated from the Cameroon race, and, therefore, pre- 

 sumably from that occurring on Fernando Po, the type locality of the 

 species. 



ELIOMYS NAGTGLASII (Jentink). 



1888. Graphiiirus nagtglasii ]'e:kx\^v.. Notes from the Leyden Museum, x, 

 p. 38 (Du (2ueah River, Liberia). 



Native name, See-see. 



An adult male was taken on March 12. Measurements: total 

 length 258; total vertebne 103; hind foot 30 (28). 



MUS ALEXANDRINUS Geoffrey. 

 Native name, Tun-daw. 

 One specimen, March 18. 



• Three specimens from Benito River measure : total length 470, 490, and 

 500; tail vertebne 230, 240, and 240 ; hind foot 54 (50), 55 (52) and 56 (52). 



2 Measurements in parenthesis are those of an adult skull of Sciurus rufo- 

 brachiatus from Benito River, Cameroon. 



