1879. ] Recent Literature. : 33 
but also furnish the facilities for the prosecution of original 
researc 
The present report gives descriptions of the osteology and 
Perissodactyla, ? Orohippus Miio, Pulih yeys major and P. lew deni. 
Leurocephalus eerste" gen. et sp. nov., Amdblypoda, Uintatherium 
leidyianum sp. n d U. princeps sp. nov. The new species are 
Megencephalon (Carnivora new genus) I sp.; Hyrachyus, 3 sp.; 
Helaletes, 1 sp. Lthygrammodon gen. nov. , supposed to be Artio- 
dactyle and related to the Camelide,1 sp. Crocodilus, 1 sp. Of 
which is doubtless a genus distinct from Palgosyops, although 
the authors have not seized its single character in their diagnosis. 
The most beautiful specimen is the Uintatherium letdyianum, of 
which the party obtained a nearly complete cranium and much 
of the skeleton. The excellent heliotype engraving which 
accompanies the report gives a good idea of the appearance of 
this extraordinary animal, whose place is evidently between the 
two extreme forms, Uintatherium mirabile and Loxolophodon cornu- 
tus. Other figures representing vertebra and other parts of the 
skeleton will prove very useful. Several of the other species are 
represented by figures engraved by photographic process. We 
can only wish for a few representing the crowns of the teeth. 
e fish-beds of Florissant, Col., yielded some fine specimens 
of safes species, among which is a new Z richophanes. 
The authors of this catalogue may congratulate themselves on 
having measureably mastered one of the most difficult branches 
of our palzontoloyy, considered from the standpoint of literature 
and synonymy. They have presented the results of their labors 
in a form which is available to their fellow workers. We con- 
clude this notice with the single regret that they did not retain in 
MS. the compiled catalogue which closes the report. There are 
several reasons why this course should have been followed; one of 
which is that a large proportion of its names are as yet without 
authority, but are rather in the condition of those that fill sales 
catalogues of different kinds, than available for scientific purposes. 
PACKARD’S GUIDE TO THE STUDY OF InsEcts..—We notice the 
present edition. for the purpose of drawing attention to certain 
cunan and suggestions which may prove of interest to those __ 
who do not possess the last edition, and for this purpose quote as 
follows from the preface. “ More important additions and altera- 
tions have been made in this edition than in any previous one. 
The author has decided to consider the — Arachnida — 
VOL, XIII.—no. L 3 
