258 RECORD OF SCIENCE FOR 188tJ. 



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

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

 403, May, 188G. New Haven.) 



Abstract of. 



Leidy, Joseph. An extinct Boar from Florida. (Proe. Acad. Nat. 

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

 phia.) 



Decribes provisionally the new genii.s Euxyodon and the sjiecies Eusyodon max- 

 . hnus. 



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



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



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

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

 attributed to a species under the name of Mastodon Floridamis. 



Leidy, Joseph. {See Koken, E.) 



Lennox, . The F'ossil Sharks of the Devonian. (Proc. Canadian 



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

 Some descriptive notes on a specimen of Machwracanthiis sulcatua 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 Arablypoda. pp. i-xvi and 1-186, figs. 



1-30, 1886. London. 



Contains many American species. 



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

 Museum (Natural History), Cromwell Road, S. W. Part in. 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. in, pp. 326-328; July 1886. London.) 

 Review of; contains also much on American species. 



I, "Beitrage zur Kenntniss der Stammesgeschichte der Hufthiere, etc.," Mor- 

 phol. Jahrbuch, vol. xn, pp. 1-136, pis. i-vi. (1886.) 



Lydekker, R. M. DoUo 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.) 



