340 General Notes. | April, 
therefore referred to the Nimravide. Mr. Filhol, however, shows 
that there are five toes on all the feet instead of five and four, so 
that Proelurus must be referred to the Cryptoproctide. A de- 
tailed comparison gives the resemblances and differences between 
the P. /emanensis, and the C. ferox. In this memoir we have an- 
other interesting contribution to the history of the types of the 
"Eocene fauna whose representatives yet remain in the southern 
hemisphere 
THE Seacsincktion OF THE PERissopactyLa.—In the forth- 
coming Report of the U. S. Geological Survey of the Territories 
of Dr. Hayden, the following arrangement is given by Professor 
Cope. © 
I, Eugen pa oe crescent of superior molars shortened and connected with an 
r basal lobe; inferior molars with cross-crests; premolars different 
froth peck nes 
Be LOGS 4 0 ees Sea es Lophiodontide. 
fey : Tri iplopo odide. 
Il. Aer exterior crescent of superior molars like div. I; inferior molars with 
ross-crests; superior molars and premolars alike, with cross-crests. 
3. Mastoid bone forming part of the €xternal wall of the skull; no poco oid 
ngat Hyracodontide. 
4. Mastoid hone excluded from the walls of the skull by the saat bi the 
wisn and apa: a postcotyloid iy of the mandible 
SNOT ds ch ck va he CO Hed ena ees sok a Vena estes aus ‘Rhtwocerontidae 
III. Poe ecsenti crésts 3 superior molars ssbacuats inferior molars wit 
crests, 
er ed 
eee ere ees essese 
see eee er eee eee 
erior molars and premolars alike and with cross-crests...... .» Zapiride. 
1¥; The external crescentuid crests of the superior molars subequal ; inferior molars 
with crescents 
A, Premolars different from molars; the superior with only one internal cusp. 
6. Toes nfo divs URC pe CE RUNG VET UN VAC DES bes OT oy Mocs bee Chalicotheriid@. 
Recut s Paleotheriide. 
8. Toes with digits 3-3 prenayes eid 
.... Lyuide 
9. Toes with digits 1—I......... 
GrotocicaAL News.—Professor Huxley evidently believes in 
‘American paleontology. He is still lecturing on our fossil horses, 
concerning which he apparently has information not generally acces~ 
sible to American palzontologists. He has expressed the opinion 
that the primitive mammalia were five-toed, after it had been an- 
nounced in this country, i and he has recently discovered that the 
Insectivora represent a primitive type of mammalia. This view 
was proposed. here six years ago, long enough ago for Professor 
Huxley to have forgotten where the idea originated. Professor 
Wilder in Science, suggests that the large sacral neural cavity 
found by Marsh in &% 'y psirhophus ( Stegosaurus), was n ot filled by 
nervous matter. This view has doubtless occurred to ce per- 
