souicuLUS. 203 



The first upper incisors are short and hooked, with a promi- 

 nent cusp at their posterior portion, and a small cusp on the 

 inner side of the vertical portion of the tooth, a little above 

 the tip. Second, third, and fourth intermediate teeth conical, 

 decreasing in size fi'om before backwai-ds. An extremely 

 minute tooth, wedged in between the four intermediate teeth 

 and the second premolar, and completely excluded from the 

 general line of the teeth externally. Second premolar with 

 one prominent external central cusp with a smaller cusp anterior 

 to it, the former cusp being prolonged backwards as a ridge 

 terminating as an obscure cusp. The basal portion of the 

 second premolar internally has two pointed cusps, the anterior 

 cusp the most downwardly prolonged, corresponding to the in- 

 ternal cusps occurring on the first two molars : the crown of each 

 molar has three small external and two internal cusps connected 

 to the internal cusps by a zigzag line. The third molar has 

 four cusps arranged quadrangularly around a central depres- 

 sion with one external cusp. The first lower incisor has 

 a marked cusp near its base. The third tooth has two cuspa, 

 and the molars are five-cusped, one anterior and two external 

 and two internal, opposite to each other. 



The transverse process of the atlas is not outwardly pro- 

 longed. The spinous process of the axis is large and halbert- 

 shaped, but the remainiijg cervical vertebrae show no distinct 

 spinous processes. The neural arches have considerable 

 lateral breadth. There are well-developed hypapophyses on 

 the 2nd and 3rd cervicals, and a trace of them on the 3rd and 

 4th. The transverse processes of the 3rd, 4th, 5th, and 6th 

 cervicals overlap. The dorsal vertebrae are devoid of spinous 

 processes, until about the 10th segment, when a trace begins to 

 show itself and which becomes more strongly developed in 

 the lumbar vertebrae. In Croeidura the first dorsal vertebrse 

 have short spinous processes, and all of them have their pro- 

 cesses more or less developed, whereas in Talpa they are, as in 

 Soriculus, almost obsolete. Five vertebrse are united in the 

 sacrum, which has a prominent keel-like crest, and, instead of a 

 symphysis, the pubic bones are mnch more widely apart than 

 in Croeidura. The caudal vertebras increase in length to the 

 8th, and then diminish. The vertebral formula is C. 7, D. 

 13, L. 6, Sacral and P. Sacral 5, Caudal 17. 



The shoulder girdle is rather far forwards, as in Talpa, and 

 from the neck being short, the head is brought near the shoul- 

 der, iDut not to the marked degree as in the mole. The 

 scapula is short and narrow as in firociduru, but the humerus 

 is relatively very much shorter and stouter than in that 



