440 ANNALS NEW YORK ACADEMY OF SCIENCES 



able to the peculiar and little-known genus Ceraspis, first reported by 

 Schiiter from the Eifel Devonian. 



A brief consideration was made of the evidence upon which Jaekel, 

 DoUo and others have recently advocated the view that Ptyctodonts are 

 Arthrodires, and that the latter group, together with Ostracoderms, are 

 derived from primitive sturgeons. Comment was made upon Jaekel's 

 theoretical reconstruction of the so-called shoulder-girdle (in reality a 

 totally different structure) of Khynchodus and upon the disputed ques- 

 tion of the restored dentition of Mylostomids. The typical specimen of 

 Dinognathus ferox was exhibited and held to afford reliable means for 

 homologizing the several components of the Mylostomid and Dinichthyid 

 types of dentition. A discussion followed of recent interpretations of 

 the dental structures grouped under the head of Edestidse, and of the 

 conjectural association of Cochliodont and Psephodont crushing plates 

 in the mouth of Carboniferous sharks. 



New discoveries were reported of fossilized brain structures and au- 

 ditory organs in ganoid fishes from the Carboniferous, as well as the 

 unique occurrence of otoliths in the Permian genus Palceoniscus. A slab 

 was also exhibited in which were preserved complete skeletons of a prob- 

 ably new species of Cmlacantlius, discovered by Dr. E. H. Barbour in the 

 Coal Measures of Kansas. 



The Section then adjourned. 



William K. (tRegory, 



Secretary. 



SECTION OF ANTHEOPOLOGY AND PSYCHOLOGY 



22 November, 1915 



Section met in conjunction with the New York Branch of the Ameri- 

 can Psychological Association at Columbia University, Professor H. L. 

 Hollingworth presiding. 



The following nomination for Vice-President of the Academy and 

 Chairman of the Section was approved for transmission to the Council : 



Professor J. McKeen Cattell, Columbia University. 



Dr. Eobert H. Lowie was elected Secretary of the Section for the 

 year 1916. 



The following scientific programme was then offered : 



Charles K. Taylor, Some Eelations Between Memory Spajn"^ At- 

 tention^ School-grade and Age. 



