DR. C. W. ANDREWS OX A NEW FOSSIL MAMMAL. 943 



40. On a New Species of Dinotherium (Dmotherium hohleyi*) 

 from British East Africa. By C. W. Andrews, D.Sc, 

 F.R.S., F.Z.S. (British Museum, Natural History) t- 



[Received & Read May 23, 1911.] 

 (Plate XLYIII.t) 



During the last few years great additions have been made to 

 our knowledge of the extinct mammalia of Africa,, but hitherto 

 the discoveries of their remains have been confined to the 

 northern and southern portions of the continent. Now, however, 

 a new j&nd of mammalian bones in British East Africa shows 

 that great hopes ma}^ be entertained that before long light will 

 be thrown on the history of the group in the central portions of 

 the continent. Recently Mr. 0. W. Hobley, C.M.G., Commissioner 

 of Mines in British East Africa, sent to the British Museum a 

 small box of bones from the neighbourhood of Karungu on the 

 east side of Lake Victoria Nyanza, Most of the specimens are 

 indeterminable fragments, probably picked up on the surface, 

 but in addition to these there are some beautifully preserved 

 teeth with a portion of the mandible (PI. XLVIII. figs. 1, 1 a) of 

 a small species of Dinotheriam ; a small imperfect Proboscidean 

 calcaneum (fig. 5), a patella., and some other fragments probably 

 belong to the same animal. The teeth and bone are in a wonder- 

 fully good state of preservation, being hard and not easily broken, 

 and there can be no doubt that further collecting in the same 

 locality will yield results of the very highest importance and 

 interest. 



The teeth preserved all belong to the lower jaw : they are 

 pm. 4, m. 2, and m. 3 of the left side, and jmi. 3 of the right ; the 

 leftjOTO. 4 and m. 2 have been replaced in their sockets in tlie 

 portion of the jaw preserved ; this also contains the freshly 

 broken roots of pm. 3 and m. 1 ; m. 3 is isolated, the portion of 

 the jaw behind ni. 2 being lost. Anteriorly tlie jaw fragment ceases 

 -at the level of the front of pm, 2, where its inner border is turning 

 in towards the symphysis ; its ventiul portion is missing, the 

 dental canal being exposed. 



The teeth. — The anterior premolar (figs. 3, 4) has a crown con- 

 sisting of a high, laterally compressed antero-external cusp, to the 

 inner face of which a shorter and more rounded antero-internal 

 cusp is closely united. The hinder half of the tooth consists of a 

 comparatively low and compressed outer tubercle separated from 

 •the antero-external cusp by a notch, and a small i-ounded inner 



* [The complete account of this new species appears here, but as the name and 

 a preliminary' diagnosis were published in the 'Abstract' the species is distinguished 

 by the name being underlined. — Editor.] 



t Publislied by permission of the Trustees of the British Museum. 



X For explanation of thu Plate see p. 945. 



