280 Scientific Intelligence. 
rad’s report, is not, after all, so “incomprehensible and doubtful” a mat- 
ter as he had supposed. 
Mr. Conrad’s latest opinion, after examining additional specimens that 
the so-called G. Tucumcari is the typical form of Morton’s G@, Pitcheri, 
and that his own G. Pitcheri var. navia, (that is, the narrow form Dr. 
Roemer and Mr. Marcou referred to G. Pitcheri) is probably a distinct 
species, is in exact accordance with my own views expressed as long bac 
185 Gabb has also arrived at the same conclusion ;* and whe 
it is borne in mind that he and Mr. Conrad have at Philadelphia Morton’s 
? 
ages from Texas and Arkansas, for comparison with Mr. Marcou’s figures, 
rawn as he states by one of the best artists in Paris, the impartial reader 
Mees, tet 
me ao 
and numerous well marked Cretaceous fossils. Dr, S. has also shown 
that undoubted Cretaceous genera and species also occur in Texas, far 
. remain, yours truly, 
Washington, D. C., July 27, 1861. 
* Proceed. Acad. Nat. Sci. Phil. Feb. 1861. 
