594 The American Naturalist. [July, 
General Notes. 
GEOLOGY AND PALEONTOLOGY. 
Schlosser on American Eocene Vertebrata in Switzer- 
land.'—Dr. Max Schlosser has recently’ reviewed the work of Prof. 
Riitimeyer of Basel on the “ Eocene Fauna of Egerkingen.” In this 
memoir Dr. Riitimeyer endeavored to show that there have been 
found on the Eocene bed of Egerkingen, Switzerland, certain genera of 
Mammalia which were previously discovered in North America, and 
had not been known from any part of Europe up to that time. These 
fossils he named as follows. 
Tillodonta. Calamodon europeus. 
Quadrumana. Hyopsodus jurensis ; Pelycodus helveticus. 
Condylarthra. Phenacodus europeus; P. minor; Protogonia cartie- 
vii; Meniscodon pictetit. 
Dr. Schlosser makes the following critical observations on these 
species. 
He considers the Calamodon’ europæus to be well established. 
Hyopsodus jurensis is probably an Artiodactyle allied to Dichobune. 
The Pelycodus helveticus is a lemuroid, but of a genus different from 
Pelycodus. Phenacodus minor is probably a Creodont, while the P. 
europeus, Protogonia cartierii and Meniscodon pictetii, Dr. Schlosser 
thinks belong to a single genus, which he thinks is Protogonia (Eupro- 
togonia). He doubts whether the teeth, on which the three species 
are founded, belong to distinct species. 
Asa result Schlosser concluded that Riitimeyer in correct in determin- 
ing the American genera Calamodon (Conicodon) and Protogonia, (Eu- 
protogonia) as occurring in the Egerkingen formation. The lemuroids 
and creodont are of types common to both continents, while the Dichob- 
unid is European in relationship. 
Schlosser further remarks, that a boreal fauna, such as exists at pre- 
sent, was unknown during the Cenozoic ages. Europe was the home 
1 Zodlogischer Anseiger, 1894, no. 446, p. 157. 
? A genus of birds has been named Calamodus, a name which is in my opinion 
abundantly distinct from Calamodon. As, however, there are persons who, like 
the American Ornithologists Union, will make this resemblance an excuse for 
changing the name, I suggest that they call it Conicodon, from the shape of the 
as distinguished from those of Stylinodon. 
