CHIMARROGALE. 141 



Inches. 



Forefoot -66 



Middle toe -23 



Hind foot -87 



Middle toe -27 



Fourth toe -27 



Measurements of skull. 



Upper margin of occipital foramen to tip of premaxillary 100 



Inferior „ „ „ „ „ -94 



Greatest breadth across parietal region ......... -52 



Breadth across posterior angle of orbit ......... -27 



„ „ anterior angle of orbit ......... -23 



Greatest breadth across maxillaries between second and third molars .... -33 



Breadth across first molar -21 



„ „ second lateral incisor ......... .14 



Length from preorbital notch to tip of premaxillaries ...... -39 



„ !> occipital crest „ ,, ....... -87 



Posterior margin of palate „ „ ....... -50 



,, „ „ to inferior margin of foramen magnum .... •4,4, 



Breadth of foi'amen magnum -17 



Depth „ „ -15 



Length of alveolar surface of upper jaw ........ -48 



Depth through anterior extremity of nasals -13 



„ between angles of orbit ...... .... '17 



„ at occipital crest ........... -28 



Length of lower jaw from symphysis to angle (process) ..... -54 



„ „ „ to condyle -56 



„ „ „ to coronoid process ..... -44 



Length of alveolar surface -33 



Depth at coronoid process -28 



„ at corono-condyloid notch -17 



Breadth half-way between condyle and process of angle through ascending portion of 



ramus .............. -15 



The skull is distinguished from the skull of Grocidura by the greater relative 

 breadth of the brain-case, by its more arched character from side to side, by the 

 shorter character of the temporal contraction of the skull, by the marked 

 depression of the frontal area, and by the less breadth of its maxillary region. 

 The skull is also devoid of the strong ridges which characterise the skulls of terres- 

 trial shrews generally. In its form it is closely related to Crossoptis and also to 

 Soriculus. Its occipital region is extensive and forwardly uptilted, and in this 

 and in such other particulars as breadth and arching of the brain-case it is allied 

 to Crossopus and perhaps more so to Soriculus. The skull is generically identical 

 with the skull of the aquatic shrew of Japan, Sorex {Crossopus) platycephalus, 

 Temminck. It is also undoubtedly closely allied to the skull of Nectogale, from 

 which it differs, however, in being more elongated, and in having considerably less 

 breadth across the parietal region and in having a more elongated facial portion. 



Viewing the skull from above, the occipital region is all exposed, with the 

 exception of that portion of it on the basal aspect of the skuU, and the condyles are 

 seen defining almost its greatest breadth. The occipital area is convex, and slopes 

 considerably backwards. The foramen magnum is very large and rather trans- 

 versely oval, its transverse breadth nearly equalling the antero-posterior length of 



