41 ON A XEW SPECIES OF'MUS FROM Utir, 



tubercle) 0"05 ; hind foot and toes {s.u.) l'7o, breadth of foot 

 between outer toes 055. Hallux 0*35 ; first toe (s.a.) 0'52, its 

 nail 0-25 ; second toe 0*6, its nail 0*26 ; third toe 0-59, nail 0*25 ; 

 fourth toe 0*5, nail 0"21. 



>S7t7^//— Length 1'95, greatest breadth 07, the auditor bulla) are 

 small, slightly rounded above, compressed laterally ; the range of 

 the three molars 0"4; the first 0'2, second 0*15, third i ; width 

 of first molar 01, of the second O'll ; width of palate between 

 the teeth 0'2 ; length of the anterior palatal foramina 0'2 ; width 

 upart in the centre 0"11, from their hinder edge to the posterior 

 palatal foramina 0"i, from the inner side of the incisors to tubercle 

 in the angle of the posterior margin of the palate 0"9 ; there is a 

 slight ridge extending down the palate between the foramina ; 

 length of zygoma 0*9, width of the arch 0*6 ; occipital foramen, 

 height 0'31, width 0'3. Interorbital space flat, slightly elevated 

 in a narrow ridge on the margin of the orbits. 



Ilab. Island of "Ugi," Solomon Grroup. 



Expla:n'ation of Plate Y. 

 Fig. 1. — -Under surface of foot. 

 2. — Upper surface of foot. 

 3. — Skull from below. 

 4. — Outside view of ramus of lower jaw. 

 5. — Side view of skull. 

 G. — Teeth of right lower jaw, (enlarged). 

 7.— Teeth of right side of upper jaw, (enlarged). 



The working surface of the teeth in the upper jaw shows a 

 well defined central ridge fitting into a corresjjonding depression 

 in the series of the lower jaw. 



