350 CATALOGUE OF UNGULATES 



The alleged absence of flattening and lateral angulation in 

 the nasal region, and the massiveness and simple character 

 of the premolars, do not appear to be constant characters. 

 Coloration almost indistinguishable from that of some of 

 the eastern representatives of the next species. 



As the name larvatus antedates cheer opotamus, the former 

 inust stand if the insular and continental forms are regarded 

 as specifically inseparable. 



The two Malagasy races are chiefly distinguished by size. 



A. Potamoehcerus larvatus larvatus. 



Typical (and only) locality Western Madagascar. 

 Size relatively small, with the flat portion of parietal 

 region of skull narrow (16 mm.). 

 No specimen in the collection. 



B. Potamoehcerus larvatus hova. 



Potamochcerus larvatus hova, Lonnberg, Arkiv Zool. vol. vii, no. 6, 

 p. 32, 1910. 



Typical (and only) locality Eastern Madagascar. 



Larger than typical race, with the facial profile still 

 straighter, and the parietal region wider (26 to 40 mm.). 



74. 3. 11. 1 (1659, a). Skin, mounted, and skull, young. 

 Ambodiagne, west of Antananarivo ; collected by Mr. E. 

 Bartlett. Purchased, 1874. 



74. 10. 9. 1 (1659, b). Skull. Tamatave Forest ; colJected 

 by Mr. A. Crossley. Figured by Gray, Ann. Mag. Nat. Hist. 

 op. cit. pi. iv. Purchased, 1874. 



97. 9. 1. 162. Skull .and skin. Ampitambe, Eastern 

 Madagascar ; collected by Dr. C. J. Forsyth Major. Type. 



Purchased, 1897. 



8. 3. 25. 1. Skin, mounted. Madagascar. 



Purchased, 1908. 



II. POTAMOCHCEEUS CHCEKOPOTAMUS. 



Sus africanus, Gmelin, Linn.'s Syst. Nat. vol. i, p. 220, 1788; 

 Schreber, Saugthiere, vol. i, p. 327, 1791 ; Thunberg, Mem. Ac. 

 Sci. St. Peter sb. vol. iii, p. 320, 1811 ; Blainville, Osteographie, 

 Sus, pi. viU, fig. 1, partim ; Flower and LydeJcker, Study of 



