MAMMALS FROM MOUNT COFFEE, LIBERIA 64I 



length of incisive foramen 7.4 (S.4) ; combined width of incisive 

 foramina 2 (2.2); length of nasals 13 (14.4); combined breadth of 

 nasals 4 (4); zygomatic breadth 17 (19); mastoid breadth 13.6 

 (13.8); interorbital breadth 4.6 (4.6); breadth of braincase above 

 roots of zygomata 13.8 (14); depth of braincase at front of basioc- 

 cipital 10.8 (10.6); frontopalatal depth at posterior extremity of na- 

 sals 9 (10); least dejoth of rostrum behind incisors 6.4 (6); maxil- 

 lary toothrow (alveoli) 7.4 (8) ; breadth of first upper molar 2.2 

 (2.8) ; mandible 20.4 (22) ; mandibular toothrow (alveoli) 7 (8).'^ 



Specimens examined. — Six, all from the type locality. 



Remarks. — Dasytnys ruftchis differs so widely from the large, 

 dark D. incomptiis as to need no special comparison. It apparently 

 more closely resembles D. bentleyce., a species which I have not seen, 

 though readily distinguishable by its shorter tail and smaller ears. In 

 color D. bejitleyce is merely said to resemble Peters' plate of Dasymys 

 gueinziz\ a statement sufficiently vague to cover much specific A^aria- 

 tion. The plate, however, shows no trace of the red suffusion of the 

 dorsal surface so conspicuous in D. nifulus. 



LEGGADA MUSCULOIDES (Temminck). 

 1888. Mus jnusculoides Jentink, Notes from the Leyden Museum, x, p. 44. 



The collection contains two specimens, an adult female and a half- 

 grown young. The former measures : total length 105 ; tail vertebras 

 46; hind foot 13.8 (13); ear from meatus 9; ear from crown 7.4; 

 width of ear 8. 



ARVICANTHIS PULCHELLUS (Gray). 

 1888. Mus barbariis Jentink, Notes from the Leyden Museum, x, p. 44. 



Mr. Currie secured four individuals of this species, three adults 

 and one young. The adults give the following average and extreme 

 measurements: Total length 256 (244-268); tail vertebrae 129 

 (126-134); hind foot 28.1 (27-29); hind foot without claws 26.3 

 (25-28). 



ARVICANTHIS PLANIFRONS sp. nov. 



Type. — Adult male (skin and skull) no. 83814, U. S. National Mu- 

 seum. Collected at Mount Coffee, Liberia, Africa, April 26, 1897. 



Characters. — Similar externally to Arvicatithis univittatus (Pe- 



* Some of the cranial measurements of D. bentleycs given in the original de- 

 scription are: basal length 31.5 ; greatest breadth 18; nasal length 13.8; in- 

 terorbital breadth 4 ; palatal length 19.6 ; diastema 10.3 ; palatine foramina 8.1 ; 

 length of upper molar series 6.5. 



