OF ARTS AND SCIENCES ; DECEMBER 10, 1862. 85 



Professor Hitchcock read the following paper, which was 

 illustrated by specimens, casts, and drawings of the footprints 

 described. 



Suppleme^it to the Ichnology of New England. By Edward 



Hitchcock. 



Professor Hitchcock stated that this paper was the result of the 

 examinations he had made in preparing a descriptive catalogue of the 

 large collection of fossil footmarks in Amherst College. He had thus 

 become satisfied that some of the species of footmarks described in 

 his Ichnology of New England, published by the government of 

 Massachusetts in 1858, should be given up, that some others were 

 doubtful, but that a still large number of new ones must be added to 

 the list. The paper also contains important additions to the Ichnology 

 in respect to insect tracks, and points out a supposed error, as to some 

 of the larger tracks, into which the author and others have fallen, 

 whose correction may essentially modify our views as to the nature 

 of the animals. 



1. Species of the Ichnology not reliable. 



Brontozoum isodacttluji. Ptilichnus typogkaphus. 



Plattpterna gracillima. Ptilichnus pectinatus. 



Batrachoides antiqdior. Grammepus uniordinatus. 



2. Species of doubtful Character. 



Ambltontx giganteus. Platypterna Deaniana. 



Amblyonyx Lyellianus. Tridentipes uncus. 



Argozoum Redfieldianum. 



3. Neiv Species. 



1. Anom(epus intermedius. 



2. Anomoepus minimus. 



This genus in the Ichnology is classed among the Marsupialoids, 

 but called also Ornithoid, combining as it does characters found now 

 in the Marsupials and Birds. Two species are described in the 

 Ichnology, — A. major and A. minor. Two others are now added. 



VOL. YI. 10 



