254 DESCRIPTION OF FIVE NEW SPECIES 



Description of five new Species of Fossil Footmarks, 

 FROM the Red Sandstone of the Valley of Connecti- 

 cut River. By Edward Hitchcock, LL. D., Professor of 

 Chemistry and Natural History in Amherst College, Mass. 



Since the publication of my Final Report on the Geology of 

 Massachusetts, in which I described twenty-seven species of fos- 

 sil footmarlvs, I have not been able to jirosecute inquiries on the 

 subject to much extent; and therefore, with one exception, the 

 new species described in this paper, have been made out from 

 specimens presented to me by Dr. James Deane, who obtained 

 them at Turner's Falls on Connecticut river, between the towns 

 of Gill and Montague, and at the Horse Race, a few miles fur- 

 ther up the stream. 



When I made out the species for my Report, I had little doubt 

 that several were included under the name of Ornithoidirhnites 

 tuherosus : but I could not well define the distinctions between 

 them. An examination of better specimens enables me to sepa- 

 rate at least one species. 



In my Report I have given three figures of O. tuherosus : name- 

 ly, Plate 37, figs. 20 and 21, and Plate 38, fig. 22. A mo- 

 ment's inspection of these figures shows a striking difference 

 between fig. 20 of Plate 37, and the other tw^o figures. But 

 as the former was destitute of claws, I thought it safest not to 

 separate it from the others. Having since, however, found the 

 claws upon numerous specimens, I shall describe this variety as 

 the O. tuherosus; excluding the other figures above referred to. 



I stated in my Report, that in most of the Pachydactyli, the 

 tuberose swellings, or muscular impressions of the foot, are two 

 on the inner toe, and three on the middle toe ; but that I had no 

 distinct example in which there were four on the outer toe; though 

 1 had no doubt that such was always the case. I have since seen 

 numerous examples, some of the most distinct of which were 

 obtained by Dr. Deane. I am now, therefore, prepared to give a 

 corrected description of O. tuherosus; limiting that species to 



