from the Philippine Islands. 107 



quills are thicker in the middle than one of the incisors. Tail 

 short, the pediculated terminal quills small. Colour greyish 

 brown in front, the strongest quills black with a whitish base 

 and with scarcely any white at the extremity. Lower parts 

 greyish white. Some white hairs near the front claws. 



in. lin. 



Length of body (from tip of nose to root of tail) 14 6 



Length from nose to ear 2 10 



Length of tail, with terminal quills 3 



Length of fore foot 1 6 



Length of hind foot ' 2 4 



Length of one of the largest quills 4 



Length of one of the hollow caudal quills 6 



The skull is distinguished by the shortness of the nasal 

 bones, which are considerably shorter than the frontal suture. 

 The facial portion is not very convex above, and concave on 

 the sides. Infraorbital opening rather wide. Ascending 

 ramus of the intermaxillary narrower than a nasal bone, and 

 not extending so far backwards as the nasals. The palatal 

 incision advances forward to opposite the middle of the hinder 

 molar. The outline of the masticatory surface of the molars 

 is almost circular in adult individuals. 



I give some of the measurements of two skulls, one (A) 

 being that of an old, the other (B) of a younger individual (in 

 which the fourth molar is still undeveloped). 



A. B. 



millim. millim. 



Total length 93 86 



Length of nasal bones 25 24 



Length of frontal suture 37 (?) 31 



Least width of nasal bone 7*5 7 



Length of fronto-intermaxillary suture ? 4 



Least width of interorbital space 29 30 



Distance between incisor and first molar 25 22 



Length of upper molar series 19 19 



Width of palate between the second molars .... 7 5*5 



Skull A is that of a very old individual, in which nearly all 

 the sutures have disappeared, so that the measurements of 

 some are either uncertain or impossible. The shortness of 

 the tail of this species is also indicated by a diminution 

 in the number of caudal vertebras : there are only ten ; and 

 the termination of the last shows that only one or two rudi- 

 mentary vertebras, if any, are missing. The numbers of the 

 other vertebras are the same as in Hysirix Javanica, namely 

 7 cervical, 14 dorsal, 5 lumbar, and 4 sacral. 



