58 DR. J. ROUX ON THE TOADS [Jail. 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, lauliments of a penetration 

 of the enamel by dentinal tubes occur with more frequency than 

 in other mammals. This may possibly indicate some remote 

 connection with the Mai'supials, but the point which I wish to 

 emphasise is that, as regai-ds this character, the Oi'eodonts carry 

 VIS absolutely no further than do the recent Carnivora. 



Bibliography. 



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



Sc. Geolog. viii., 1877. 



(2) Matthew, W. D. — " Additional Observ^ations on the Creo- 



donta." Bulletin of American Museum Nat. 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., 1001-3. 

 (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, C. S. — " On the Teeth of the Gadid?e." Quart. Journ. 



Micr. Sc, 1899. 



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



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



(9) Tomes, C. S.— " On the Structure of the Teeth of ^^oiorycies." 



Proc. Zool. Soc, 1897. 



4. Synopsis of the Toads of the Genus Nectophrjjne B. & P., 

 with special llemarks on some known Species and 

 Description of a new Species from German East Africa. 

 By Dr. Jean Eoux, Curator in the Basle Museum of 

 Natural History. 



[Received December 11, 1905.J 



(Plate II. *) 



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 known 

 species of the genus Nectophryne. Whilst verifying the diagnoses, 

 I was able to make some observations modifying or completing 



* Fur expliiruitioii of Uic Plate, see p. 05, 



