58 DR. J. ROUX OX THE TOADS [JilU. 16, 



theirs may point to its not lying on quite the same line of 

 descent. 



Though I would not attach too much importance to it, I would 

 again call attention to the fact already mentioned, that in Car- 

 nivora, and still more so in Insectivora, rudiments of a penetration 

 of the enamel by dentinal tubes occui' with moi'e frequency than 

 in other mammals. This may possibly indicate some remote 

 connection with the Marsupials, but the point which I wish to 

 emphasise is that, as regards this chai'acter, the Oreodonts carry 

 us absolutely no further than do the recent Oarnivora. 



Bibliography. 



(1) FiLHOL. — " Mammiferes fossiles des Phosphorites." Annal. 



Sc. Geolog. viii., 1877. 



(2) Matthew, W. D. — " Additional Observations on the Oreo- 



donta." Bulletin of American Museum Kat. History, 

 1901. 



(3) Lydekker, R. — Art. " Mammalia," Encyclop. Britannica, 



vol. XXX., 1902. Also Proc. Zool. Soc, 1899. 



(4) Wortman. — " Studies on Eocene Mammalia." American 



Journal of Science, vols, xii., xiii., & xiv., 1901-3. 

 (6) Tomes, J. — " On the Dental Tissues of Rodentia." Philos. 

 Trans., 1849. 



(6) Tomes, J. — " On the Dental Tissues of Marsupialia." Philos. 



Trans., 1850. 



(7) Tomes, 0. S.— " On the Teeth of the Gadidaj." Quart. Journ. 



Micr. Sc, 1899. 



(8) Tomes, C. S. — " On the Development of Marsupial and otlier 



Enamels." Philos. Trans., B. 1898. 



(9) Tomes, 0. S. — " On the Structure of the Teeth of Notorycies." 



Proc. Zool. Soc, 1897. 



4. Synopsis of the Toads of the Genus Nectopliryne B. k P., 

 with special Remarks on some known Species and 

 Description o£ a new Species from German East Africa. 

 By Dr. Jean Roux, Curator iu the Basle Museum of 

 Natural History. 



[Received December 11, 1905.J 



(Plate 11. *) 



On visiting, last spring, the beautiful collections of the Museums 

 of Paris and London, I had occasion to examine, especially in the 

 British Museum, most of the typical specimens of the knoAvn 

 species of the genus Nectophryne. Whilst verifying the diagnoses, 

 I was able to make some observations modifying or completing 



* For explanutiou of the Plate, sec p. 65. 



