new Mammals from. Madagascar. 325 



9. Chirogale Sihreei, sp. n. 



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

 smaller, and presenting differences in the skull. Coloration 

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

 fawn. Beneath whitish. 



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



Skull smaller, but in some of its transvei'se dimensions 

 comparatively broader than in C. Mih'i*. Parietals more 

 globose than in the latter. The maxillaries are hollowed out 

 in front of the lacrynials, a character not observed in O. Milii. 

 In the form of interparietal more approaching Opolemur f 

 than C. Milii. 



Three adult specimens were obtained from the neighbour- 

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

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

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



Dimensions in millimetres of skull and teeth of type, ^ 

 (M. 839) :— 



Basal length _ 42-5 (C. il/i7n49&50) % 



Length of nasals in middle line 19 



„ frontals ,, ,, 14 



„ parietals „ „ 13''5 



,, interparietal „ „ 6"5 



Breadth across zygomatic processes . . 31 

 Breadth between procc. postauditor. of 



squamosuiu 24'5 



Breadth across parietals 23-5 



Breadth behind postorbital processes of 



frontals 14*6 



Interorbital breadth at narrowest .... 8 

 Breadth between post, basis of upper 



canines 10'5 



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



basis of canine) 18'2 



„ upper molars 8-5 



„ upper pi-emolars 6-5 



„ lower dental series (m.3 — ant. 



basis of canine) 16 



,, lower molars 9'o 



„ lower premolars .......... 4 



* See dimensions of C. Milii in Forsyth Major, " Ueber die malagass- 

 ischen Lemur iden-Gattungen Microcebus, Opolemur, und Chirogale,'" 

 Novitates Zoologies, vol. i., Jan. 1894, pp. 28-81. 



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



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



