R. COLLETT. [No. 11. 



The Total Length of the Norwegian specimens vvas gene- 

 rally found to vary from 160 to 170 mm ; in a few cases, when 

 the length vvas under 160 mm , the animal vvas probably not ful ly 

 grown. Two males shovved a total length each of 171 mm , and 

 one animal, the only pregnant female (caught in Opdal August 

 1909), had a total length of 178 mm . 



The length of the tail varied from 90 — 98 mm ; in most speci- 

 mens it was 94 — 97 mm . ln a single specimen (the total length of 

 which was 164 ram ), the tail measured 101 mtn . Thus it has alvvays 

 been considerably longer than the head and trunk together, in 

 certain cases nearly l 1 ^ times as long. 



The skull of the larger specimens had a length of 19.5 — 

 20 mm , and in all respects corresponded with skulls from 

 Jutland and Hungary. In the single pregnant female, the total 

 length of which was somewhat greater than that of the others, 

 the skull was crushed, but judging from those complete bones 

 that remained, the length may be estimated at about 21 mrn . In 

 this specimen the teeth were worn, in other cases they were 

 either unvvorn, or slightly so. 



The Palatal Ridges are as follows. 



a. Corresponding to the diastema: 3 parallel ridges, of which 

 the foremost is the shortest; the remaining ones are some- 

 times divided into half ridges. In front of the first ridge 

 is a round tubercle which is continued through a narrow 

 fold of the skin to the base of the incisors. 



b. Corresponding to the molar series: 5 ridges, of which the 

 three foremost ones are aften broken in the centre; 



1) between P. one half-ridge on either side, pointing 

 backwards. 



2) between M 1. one half-ridge on either side, also pointing 

 backwards. 



3) between the anterior half of M2. one half-ridge on 

 either side, short and straight. 



