Mr. C. Forster Cooper on Metamynodoii biigtiensis. G17 



tlieir structure at all clearly, it is impossible to say anj lliiiig 

 as to tlieir nature. 



It is very difficult, kiiowiu^ iiotliiiif^ as to tlie conditions ot 

 the gonads as a whole, to say what the meaning of the 

 observed condition is. In the cases described by Goodrich 

 and Oiton, where the gonads were prej)onderaiingly male, we 

 naturally suspect that we are dealing with a condition of 

 protandric Ik rinaphroditism, though it is not impossible that 

 the abtiormal gonad was female from its first differentiation. 

 On the whole, the balance of |)robability seems to me to be 

 in favour of this view in this case also. There is much more 

 male tissue present than female, and the condition of the 

 t<'stes which contain ova resembles rather that of an original 

 male gonad which has been invaded by ovarian tissue than 

 the reverse, the ova being apparently mainly young and 

 having little or no appearance of degeneration. Any attempt 

 at a theoretical interpretation is, I think, better avoided 

 for the present, until we know more of the facts than 

 we do now. 



LXXIV. — Metamynodon bugtiensis, gp. w., from the DtVd 

 Bwjli Deposits of Baluchistan. — Preiiminanj jSotice. Jiy 

 C. Forster Coopek, M.A., Superintendent uf tlie 

 University Museum of Zoology, (Jambridge. 



Among the fragments of numerous rhinoceroses found in the 

 deposits of Dera Bugti in Balucliistan is a palate and two 

 other fragments of a form which appears to be sutficiently 

 different from the rest to be described as a new species. 



The ty[)e-specimen is a palate with six teetli on each side, 

 the last pair being just erupted from their alveoli. 



The j)osition of this animal depends somewhat on the 

 correct interpretation of these teeth. If, as is the writer's 

 belief, the last pair represent the third molars, then, from 

 their shape, the specimen must be placed in the neighbouihood 

 of the Amynodonts, with which genus it is provisionally 

 ])laced, allhongh further material, when found, in;iy demand 

 a new genus tor its reception. 



The reason for regarding these teeth as the third molais 

 lies in the fact that tiiey occupy all the available space at the 

 back of tiie series, except for tiie very simdl area ot the post- 

 alveolar tuberosity. This area on each side, as well as the 

 posterior border of the palate, is unbroken and in good 

 condition. On one side the tuberosity has been seclione 1, 



Ann. & Mag. N. Hist. Ser. 0. Vol. ix. 10 



