230 



MERISTIC VARIATION. 



[part I. 



on the right side immediately in succession to j? but slightly within 

 the arcade is another tooth (marked + in the figure), which is very nearly 

 a copy of p*, though a little smaller. On the outside of the jaw and 

 behind this tooth is a normal p. From its singular position outside 

 the series, this tooth might easily be taken for a supernumerary one 

 though its form clearly shews it to be a natural p* displaced, while two 

 teeth having the form of p* stand in succession. B. M., 63. 7. 7. 18. 

 (mentioned 'by Thomas, P. Z. S., 1882, p. 62). 

 300. H. ichneumon (Andalusia): in one of the upper jaws between 

 and internal to l^ and i^ 3 is a 3-rooted tooth (not a milk-tooth) which 

 in size and shape is about intermediate between P^ and p\ Leyd. M. 



Molars. 



The only cases of noticeable variation in molars were both in 

 the same species, Crossarchus zebra. Of this species six skulls were 

 seen, four normal, and also the two following, the first being a case 

 of extra molar on each side, the next a case of increase in size and 

 complex variation in w 2 , on the left side suggesting a partial divi- 

 sion of this tooth. 

 f 301. Crossarchus zebra : small but well-formed additional molar 

 in upper jaw on each side, making pf, m\. (Fig. 51, III.) Teeth 

 unfortunately all much worn, so that it is not possible to determine 

 whether any of the molars differ from their normal forms in corre- 

 lation with the existence of these extra teeth ; but as far as size is 

 concerned, there was no sign of such change, ^ and »£ being of 

 the usual size. B. M., 73. 2. 24. 18 mentioned by Thomas, P. Z. 

 S., 1882, pp. 61 and 89. 



Fig. 51. Crossarchus zebra. I. Posterior upper molars of No. 

 II. A normal specimen, right upper jaw. 

 III. Upper jaw of No. 301. 



302. 



