350 DR. ST. G. MIVART ON THE ARCTOIDEA. [Apr. 21, 



most Viverrines, being slightly exceeded by that of Genetta, Herpes- 

 tes, Cynictis, Hemigalidia, and most of all by Cynogale, where it 

 reaches 29'5. 



The palate is relatively 24*1, which is more than double the 

 average of the Feline palate's length, and much more than that of 

 any Viverrine, the largest of which (^e^T^es^es) is but 17'9. That 

 of the Dingo is 13-8. 



The relative breadth of the palate is 6*5, which is less than that of 

 the Dingo (7'0) or of any Cat, and is hardly more than half that of 

 Crocuta, while in Suricata it is lO'O. It is a little wider than that 

 of Viverra or Arcticiis, while that of Eupleres is only 3" 9. 



If we estimate the length from the basion ^ to the anterior edge 

 of the premaxilla at 100, the length of the palate is 85*4, •which 

 greatly exceeds that of any ^luroid, where it ranges from 43"4 (some 

 Cats) to 61 or 62 (some Hcrpestes, Crossarc/ius, and Bdeogale). lu 

 the Dingo it is 54/. 



The Ijreadth of the palate thus estimated is 23*3, while in the 

 non-feline jEluroids it varies from 16'8 {Eupleres) and 18*4 {Arc- 

 tictis) to 49*3 {Crocuta). In the Cats it varies from 39'1 to 46-9, 

 and in the Dingo it is 2""6, just what it is in Viverra. 



The greatest bteadth of the zygomata is 71 '8, which exceeds that 

 of the non-feline ^luroids except the Hyaenas, where it may be 83'4. 

 In the Cats it may be 89-3. In the Dingo it is 61-6. 



The greatest breadth of the brain-case is 4 5" 6. In the ^luroids 

 it ranges from 27 {Hycena brunned) to 50*8 {Suricata) and 54'5 

 (some Cats). In the Dingo it is 34-9. 



The narrowest interorbital or postorbital breadth is 24 '2. In the 

 ^luroids it may be only 15"6 {Viverricida) and 14*0 {Cynogale), or 

 it may be 26"3 {Suricata) or 27'5 {Galidia). It is 220 in the 

 Dingo. 



The length, thus estimated, of the fourth upper premolar is 7'7. 

 In the ^luroids it varies from 4"9 {Arctogale) to i6"4 {Crocuta). 

 In Viverra it is 1 1'l, and in the Dingo it is 10'3. 



The length of the first upper true molar is 8" 7. In the iEluroids 

 it varies from TS {Crocuta) to 5-6 {Ilemigalea). In Viverra it is 

 5-2, and in the Dingo it is 6 '9. 



The breadth of the same tooth is also 8'7, while in the ^Inroids 

 it ranges from 1*7 {Crocuta) to lO'S {Suricata). In Viverra it is 

 97, and in the Dingo it is 9"4. 



The relative length of the second upper true molar is 5*8. In the 

 iEluroids it may be only 1"2 as in Genetta, or it may reach 5-2 in 

 Cynogale. In Viverra it is 2 9, and in the Dingo it is 3'1. 



The proportion borne by the pelvic limb (femur, tibia, and pes) to 

 the entire pectoral limb taken at 100, is 123-1. In the non-feline 

 ^luroids it ranges from 94'4 {Crocuta) to 136*4 {Viverricula). In 

 the Cats it may be 1 13'1 or 136'4 (the Eyra), the average being 

 1 194. In Viverra it is 127-9, and in the Dingo it is 1146. 



Compared with other Arctoids, Procyon has the relatively longest 



' /. e. front margin of foramen magnum. 



