638 MILLER 



clothed with very short reddish hairs. Ears dark brown, sprinkled 

 with almost microscopic hairs. Tail dark uniform brown throughout. 



In the red phase the back and sides are russet, the former slightly 

 duller near median line, but without trace of seal-brown. Forehead 

 and face darker than back. Otherwise as in brown phase. 



Feet. — The soles are entirely naked, and without reticulation. 

 Plantar tubercles six, all well developed ; thumb minute, its claw 

 blunt. 



Tail. — The tail is slender and moderately long, closely and distinctly 

 annulated. At middle there are 17 rings to the centimeter. Each 

 ring is divided by transverse furrows into scales slightly longer than 

 broad. The scales are very conspicuous, and so arranged that those 

 of contiguous rings form a noticeable quincunx. The few hairs that 

 spring from the spaces between the rings are short and inconspicuous, 

 in length scaixely exceeding width of rings. At tip the rings become 

 crowded and indistinct, and the hairs slightly longer. 



Skull. — The skull of AIus tuUbergi rostratus is larger than that of 

 the typical subspecies, the rostrum is proportionally larger and heavier, 

 and the posterior portion of the mandible is deeper. 



Teeth. — The teeth are as in the typical form. 



jMeasurernents. — External measurements of type: total length 266 ; 

 tail vertebrae 145.6; hind foot 28.9 (27); ear from meatus 16.4; ear 

 from crown 13; width of ear 11.6. Three topotypes average: total 

 length 254(240-266); tail vertebrae 136 (126-145); hind foot 27 

 (26-28.9) 5 h^^d ^oot without claw 26 (25-27). 



Cranial measurements of type: greatest length 33.4 (32);^ basal 

 length 28 (26.4) ; basilar length 26 (25.4) ; palatal length 14.6 (14) ; 

 palatal width between anterior molars 3 (3) ; diastema 9,6 (9) ; 

 length of incisive foramen 7 (6.4) ; combined width of incisive for- 

 amina 2 (2); length of nasals 12.2 (11. S); combined breadth of 

 nasals 3 (3.6); zygomatic breadth 15 (14); mastoid breadth 12.2 

 (11); interorbital breadth 4.6 (5); breadth of braincase above roots 

 of zygomata I2.6 (12); depth of braincase at front of basioccipital 

 8.8 (7.6) ; frontopalatal depth at posterior extremity of nasals 7 (6.4) ; 

 least depth of rostrum behind incisors 5.6 (5) ; maxillary toothrow 

 (alveoli) 5 (5); breadth of first upper molar 1.6 (1.6); mandible 

 18 (18) ; mandibular toothrow (alveoli) 5 (4.8). 



Specimens examiticd. — Nine, all taken between April i and May 

 7. Four of these are in the brown phase. 



' Measurements in pareuthcses are those of a much older skull of typical M. 

 ullbcrgi from Benito River, Cameroon. 



