178 THE OX TRIBE. 



the size is diminutive to an extreme. These also are dis- 

 tinguishing marks of the groups it is to represent : the 

 Tenuirostres among birds, and the Glires, or mice, among 

 quadrupeds, are the smallest of their respective classes ; 

 and both are typically distinguished by wanting all appen- 

 dages to the head, either in the form of crests or horns. 

 The fifth type is, perhaps, the most extraordinary of all ; 

 it should represent not only the order Rasores among 

 birds, but also the Camelopardalis among ruminating 

 quadrupeds. Hence we find that, in accordance with the 

 first of these analogies, it is a peaceful domesticated race, 

 and that it has horns of an unusually large size, even in 

 its own group ; while, at the same time, those horns have 

 that peculiar structure which can only be traced in the 

 Camelopardalis ; they are covered with skin, which passes 

 so imperceptibly to the horny state, that, as Captain 

 Clapperton observes, " there is no exact demarcation 

 where the one commences and the other ends." The 

 five leading types of quadrupeds and birds being now 

 represented, and in precisely the same order, we demon- 

 strate the groups to be natural by the following table : 



GENUS BOS the Natural Types. 



1. Bos Scoticus. Fierce, untameable. FEBJE. RAPTORES. 



2. Taurus. Pre-eminently typical. PRIMATES. INCESSOB.ES. 



f Appendages on the head"! Tr 



3. Dermaceros.l ^UNGTJLATA. RASORES. 



I greatly developed. J 



f Stature remarkably ~\ _. 



4. Pusio. < J-GLIRES. GRALLATORES. 



L small. J 



5. - Thersites. ( For e-part of the stoul-] C;ETACEA NATATOKES- 

 I ders elevated. J 



In regard to the last type, the analogies can only be 



