994. O. GC Marsh—Additional Observations on Dinoceraia. 
as merely my genus 7inoceras, and, as w, chibi is np 
established beyond a mess Prof. ‘Gi asserts, ikewi ise, that 
the descriptions he has n are correct; but this is impossible, 
since he has made most Dastactoie atateiientd about the same 
usk ! 
The March number of the Naturalist, in which I have pointed 
out Prof. Cope’s numerous errors on this subject, contains another 
article by him on "the Dinocerata. is paper, likewise, is not free 
m serious mistakes and inaccuracies, , which show that Prof. Cope 
still misinterprets some of the most important characters of his 
own specim The paper purports to have been read at the 
Dubuque meeting of the American Asada of Science, but it 
evidently includes the results of Prof. Cope’s later investigations, 
as well as corrections suggested by my recent criticisms. 18. 
equally the case with the appended paper, which was first issued 
separately, and has just been re-published in an emended form.* 
series of photogepiant of t the stall described as Hobasileus cornutus 
fen mist aken ma ny characters of this shesighe _ pee = erro- 
not be repeated. In his loss ae on Hobasileus,+ however, he has 
re-asserted that his descriptions are correct, and hence this poi pe 
deserves consideration, especially as we now have the means ° 
* Proceedings Philadelphia Academy, p. 11, 1873. 
+ American Naturalist, vii, p. 180, Nach, 1873. 
