new Mammals from Madagascar. 325 



9. Chirogale Sibreei, sp, n. 



On the whole resembling Chirogale Milii, Et. Geoffr., but 

 smaller, and presenting differences in the skull. Coloration 

 of fur silvery grej, with here and there a slight addition of 

 fawn. Beneath whitish. 



Dental formula.— I. |, C. \, P. §, M. f. 



Skull smaller, but in some of its transverse dimensions 

 comparatively broader than in C. Miln^. Parietals more 

 globose than in the latter. The maxillaries are hollowed out 

 in front of the lacrymals, a character not observed in 0. Mt'ln. 

 In the form of interparietal more approaching Opolemur f 

 than C. All In. 



Three adult specimens were obtained from the neighbour- 

 hood of Ankeramadinika (one day's journey to the east of 

 Antananarivo) ; one of these, which had been kept alive for 

 the purpose of taking measurements in the flesh, was lost. 



Dimensions in millimetres of skull and teeth of tvoe rT 

 (M. 839) :— -^^ ' ° 



Basal length 42-5 (C. Mtlu49&50) t 



Length ot nasals in middle line ]9 



„ frontals „ ,, 14 



„ parietals „ „ 13-5 



„ interparietal „ ,, 6-5 



Breadth across zygomatic processes . 31 

 Breadth between procc. postauditor. of 



squamosum 94-5 



Breadth across parietals 23-5 



Breadth behind postorbital processes of 



frontals 14-(} 



Interorbital breadth at narrowest .... 8 

 Breadth between post, basis of upper 



canines 10-5 



Length of upper dental series (w.3 — ant. 



basis of caniue) 18-2 



„ upper molars 8'5 



„ upper premolars 6-5 



,, lower dental series (m.3 — ant. 



basis of canine) 16 



„ lower molars 95 



„ lower premolars 4 



* See dmiensions of C. Milii in Forsyth Major. " Ueber die malngass- 

 ischen Lemuriden-Gattungen Microcehus, Opolemur, und Chirogale " 

 Novitates Zoologicaj, vol. i., Jan. 1894, pp. 28-31. , ' 



t L. c. pp. 20, 21. XL. c. p. 29. 



Ann. do Mag. N. Hist. Ser. 6. Vol. xviii. 23 



