258 KECORU OF SCIENCE FOR 188(). 



Leidy, Joseph. Mastodou, Llama., etc., from Florida. (Proc. Philad. 

 Acad. Xat. Sci., 1886, p. 11 ; Amer. Jour. Sci., 3d ser., vol. xxxi, p. 

 403, May, 188G. i^ew Haven.) 



Abstract of. 



Leidy, Joseph. An extinct Boar from Florida. (Proc. Acad. Xat. 

 Sci. Pliilad., vol. , pp. 37, 38, figs. 1, 2, March, 1886. Philadel- 

 phia.) 



Decribes provisionally the uew genus Eunyodon and the species Eusyodon viax- 

 imuK. 



Leidy, Joseph. Caries in the Mastodon. (Proc. Acad. Nat. Sci. 

 Philad., vol. , p. 38, March, 1886. Philadelphia.) 



Directs attention to a specimen, apparently exliibitiug the result of caries, a 

 condition never before observed by him in extinct animals, which he had 

 attributed to a species under the name ol' Mastodon Floridamis. 



Leidy, Joseph. {See Koken, E.) 



Lennox, . The Fossil Sharks of the Devonian. (Proc. Canadian 



Inst., 3d series., vol. iii, pp. 120, 121, February, 1886. Toronto.) 



Some descriptive notes on a specimen of Mackaracanlhus sulcatiis from the 

 corniferous limestone at St. Mary's, Ontario. 



Lesquereux, Leo. [See Geyler.) 



Lydekker, Kichard. Catalogue of the Fossil Mammalia in the 



British Museum (Natural History), Cromwell Road, S. W. Part III. 



Containing the Order Ungulata, suborders Perissodactyla, Toxo- 



dontia, Condylarthra, and Amblypoda. pp. i-xvi and 1-186, figs. 



1-30, 1886. London. 



Contains many American species. 



Lydekker, R. Catalogue of the Fossil Mammalia in the British 

 Museum (Natural History), Cromwell Road, S. W. Part ill. Con- 

 taining the Order Ungulata, suborders Perissodactyla, Toxodontia, 

 Condylarthra and Amblypoda. 8vo, pp. xvi and 186. London, 1886, 

 printed by order of the Trustees. (Geol. Mag., new ser., Decade iii, 

 vol. Ill, pp. 425-427, September, 1886. London.) 



Review of; mentions also some North American species. 



Lydekker, R. Dr. Max Schlosser on the Ungulata. (Geol. Mag., 

 new ser.. Decade iii, vol. iii, pp. 326-328 ; July 1886. London.) 

 Review of; contains also much on American species. 



I. "Beitriige zur Kenntniss der Stammesgeschichto der Hufthiere, etc.," Mor- 

 phol. Jahrbach, vol. xii, i)p. 1-1315, pis. i-vi. (1836.) 



Lydekker, R. M. Dollo on the Evolution of the Teeth of Herbiv- 

 orous Dinosauria. (Geol. Mag., new ser.. Decade in, vol. in, pp. 

 274-276, diagrams A-C, June, 1886. London.) 



Finally the American Cionodon stimulates the dentition of Ungulate Mammals 



in having numerous cheek-teeth in use at one and the same time. 

 (Original not seen.) 



