Frick : New Abyssinian Rodents. 



21 



orbit; dorsal frontal maxillary line much curved; palatal foramina 

 without usual mid-lateral expansion; post-palatal foramina fairly large, 

 opposite heel of AP; molars very broad and heavy with markedly 

 heavy cusps, arranged in typical Ar\icanthis pattern; alveolar length 

 of upper row of teeth 8.5 mm., compared with 7 mm. in A. abyssinicus 

 Riippell {cf. Dollman, /. c.) and 8 mm. in the larger A. niloticus 

 Desmarest {cf. Dollman, /. c.) and attaining in Specimen No. 15 (a 

 very old female) a measurement of 9.4 mm. (see table below). 



Measurements. 



Length of head and body .... 



Length of tail 



Length of pes 



Greatest length of skull 



Basilar length of do 



Condylo-incisive length of 

 skull 



Zygomatic breadth 



Interorbital constriction 



Squamosal breadth 



Length of nasals 



Breadth of nasals 



Length of diastema 



Alveolar length of upper tooth- 

 row 



Length of palatal foramen. . . . 



Length of bullae 



Depth of brain-case 



Depth of maxillaries at fronto- 

 nasal suture 



Length of mandible 



Type 



26, cT, 401,9, 

 Mm. I Mm. 



164 

 103 



30 



35-8 



31 



35 



29 

 5 



14 



14 

 4-5 

 9-5 



8.5 



7 



6.5 



14. cf. 

 Mm. 



161 164 



III jIII 



29-5i 31 



35-2j.... 



30.7 •• •• 



15,9. 

 Mm. 



21, c?,l28, cf,! 16, 9, 1403, 9,' 18, cf. 

 Mm. i Mm. Mm. I Mm. Mm. 



164 



no 



32 



34-5 

 19-5 



5-1 

 14 

 13-5 



4.4 



9-5 



8.5 

 7 



6.5 

 10.5 



20.8 

 5-3 



4.6 

 10 



8.7 



7-5 



10.5 II 



22 ; 23 



14 



4-5 

 10.3 



9.4 



7-5 



164 



no 



29 



11.3 

 24-5 



4-7 



150 143 



104 92 



30.5 28 



35-7 ■••• 



31-3 29 



12 



4-4' 



ID 1 



8.5; 



7.5I 

 6.7, 



9.7 



23 ! 



158 



113 



31 



33 



28 



35-3 

 19.1 



4-7 

 13-9 

 13-5 



4 



9-3 



8.5 



7-5 



6.5 



10.4 



9-5 

 22 



9 

 21.5 



158 

 III 



27 

 32.8 



28.2 



32 

 19.6 



4.6 



14 

 12. s 



4 



8.5 



8.1 



6.5 



6.5 



10.3 



9-3 



20 



The author's collection contains a series of seventeen specimens, 

 twelve large adults, three small adults, and two immature, all taken 

 February 24, 25, and 28, on treeless plain by Hora Mountain Base 

 Camp, where they were seen running about in the daytime pursued 

 by hawks. The pelage of most specimens is much worn and there- 

 fore patchy in appearance, the light tips of the dorsal hairs having 

 been broken off over considerable areas. Specimen No. 18 shows the 

 widest variation in color, tending toward buffy brown in contrast 

 with the tawny olive of the type. 



Named after my companion, Mr. J. C. Blick. 



