ANUEOSOREX. 153 



canal is situated above and external to tlie root of the last molar. The spheno- 

 palatine foramen is large and placed in front of the foregoing canal, and in the 

 posterior termination of the infra-orbital foramen. The latter, placed over the 

 anterior margin of the first molar, opens into a long canal, relatively longer than in 

 JErinaceus, and the lachrymal canal, instead of being situated as in that genus at 

 the anterior margin of the orbit, is placed on the anterior border of the external 

 long wall of the infra-orbital foramen, the canal being directed upwards, for- 

 wards and downwards. 



The lower jaw is shorter than in the generality of known shrews, and the 

 angular process is less strongly developed. The horizontal ramus is short and thick, 

 hardly equalling the height of the ascending ramus. The condyle is divided into 

 two, its lower half being placed on the inside of the ascending ramus, immediately 

 above the angvilar process, and separated from its upper division by a wide notch, 

 the general direction of the inferior articular surface being backwards, downwards, 

 and inwards, and that of the superior half upwards and inwards. The excavation 

 of the inner surface of the ascending ramus is smaller than in Fachyura, and 

 the coronoid process is lower, being only a little elevated above the superior facet 

 of the divided condyle. 



Dentition. — Young, new-born individuals show the premaxUlary suture 

 between the first and second small lateral teeth, so that the dental formula is 



2 + 2,2 _8 



2 "r2"r2 + 6 — ^o* 



The teeth are white. The first incisor of the upper jaw is curved downwards 

 and forwards, and the process at the posterior aspect of its base is laterally 

 compressed and longitudinally grooved, almost dividing it into two, the inner 

 division being the smaller, the groove being continued on to the posterior aspect 

 of the long crown of the tooth. The crown of the second incisor is laterally 

 compressed and triangular, with its point directed backwards. The inner aspect of 

 the crown is Kttle prolonged beyond the neck of the tooth, and is more or less 

 flattened, with a small tubercle about the middle of its internal margin. The 

 canine has much the form of the foregoing tooth, but is smaller, and the inner 

 surface also shows a trace of a tubercle as in the former. The first molar has the 

 greatest vertical extension of the permanent teeth. It has two external cusps, the 

 anterior very small, the other deep and cutting, with its point directed slightly 

 backwards, and a long prominent ridge continued outwards and posteriorly from 

 its hinder margin, also two, short, sharply conical internal cusps, a short low ridge 

 passing forwards and outwards from the posterior of the two. The second molar 

 has one external cusp on its anterior outer angle : a short ridge passing internally 

 connects it with the fu'st of the median line of cusps which form a triapical, zigzag 

 ridge, the last cusp marking the posterior external angle of the tooth. There are two 

 internal and miich shorter cusps of which the anterior is twice as large as the pos- 

 terior : the former gives off a short low ridge that ends on the inner side of the 

 centre cusp of the middle triapical ridge. The third molar is only half the size of 



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