BUBALUS MINDORENSIS. 203 



skull afterwards has been compared with the skull of Mr. 

 Steere's N", 3, a fullgrowu young bull, in Dr. Heller's 

 » Inaugural- Dissertation" •); Dr. Heller adds a series of 

 measurements of the different parts of the Dresden-Museum- 

 skull, which apparently is that of an adult male-speci- 

 men as the measurements of the different bones agree very 

 strikingly with those of our old-male-skull, which measu- 

 rements differ so widely from those of the female-skull — as 

 I will explain below — that it may be called impossible to 

 confound them, and I am convinced that palaeontologists 

 would regard the two sexes as two quite distinct species , 

 if of the animal merely the skulls without horns w^ere 

 known. 



Now a few words concerning the skeleton : there are 

 13 dorsal vertebrae with 13 ribs, on the top of each spi- 

 nous process is a bony excrescense , diminishing in size 

 towards the lumbar vertebrae, which latter are 6 in num- 

 ber: in the female-skeleton the first lumbar vertebra at 

 the left bears a movable well developed rib (Plate 11), long 

 290 Mm., its broadest part measures 25 Mm. The sacral 

 vertebrae are five in number. There are 18 or 19 caudal 

 vertebrae, the last ones being deformed. Very different in 

 form are also the three first caudal vertebrae in the male 

 and the female. 



The ribs are very broad , the broadest measuring fully 

 55 Mm. 



The sternum is composed of 7 pieces — the last segment 

 differently shaped in male and female — , ending in a 

 xiphisternura in the shape of a sickle. 



With respect to the frontal bones the horncoves are in- 

 clined backward , in the female more than in the male ; 

 the frontal bones are convex in the male, concave in the 

 female; the nasals measure 144 Mm. in the male , 155 Mm. 

 however in the female (Plates 8 and 9). In the male the 

 bony palate ends in one line with the last molars , in the 



1) I.e. 1889, p. 32. 



Notes from ttie Leyden Museum, Vol. XVI. 



