542 - REVIEWS AND BOOK NOTICES. 
1873, 106), Dr. Brewer has continued the development of lt 
Bendire’s Arizona odlogical collections, which was begun in the 
Naruratist (June, 1873, 321) describing several varieties or nov- 
elties. The identifications appear to be correct, excepting that of 
Carpodacus Cassinii which should, we believe, stand as C. frontalis, : 
and that of “ Myiadestes Townsendii,” an evident slip of the pen 
for Pheenopepla nitens. ioe 
r. Brewer has also a brief notice of the North American Hy 
locichlæ (Pr. B. S. N. H. xvi, pt. ii), in which he takes the ground 
that there are eight species of this subgenus, a view at variance 
with that now commonly accepted by ornithologists, who reduce 
the number to four or five. For ourselves, we concur more nearly 
with the mode in which the several forms are handled in the n 
work of Messrs. Baird, Brewer and Ridgway. pe 
The important business of cataloguing the Boston Society’s col- 
lection of birds, ably begun by Mr. A. Hyatt, has been carried on 
by Mr. R. Ridgway, who has gone carefully over the series of 
Raptores, identifying the specimens and naming them upon his 
protracted and favorably known studies of this group. His paper 
(Pr. Bost. Soc. xvi, 1873, 43), though simply a catalogue, heey 
at once an authority, and places the collection upon a more satisfac- 
tory basis than it has hitherto rested upon. We wish that arrange 
ments could be made for him to go over the Philadelphia Acad- 
emy’s Raptores in like manner; it is a very desirable piece Z 
work, which must be done some day, and we know of no one more 
competent to do it. The article is supplemented with mow 
graphs of the genera Micrastur, Geranospiza, Rupornis and ca 
cidium, worked out with the same patient care and to the one 
extent of analytical detail which have marked his previous pee 
Without here entering upon a criticism of certain determi ie 
as some of those in the genus Micrastur, which will see” 
modelling, we may witness the extent and importance of hist 
vestigations in these groups. ral addr 
The same author has lately cleared his desk of sever 
(Essex Inst. Bull. v, 197) describes a number of new ae 
North American Birds, from his own and Prof. Baird’ 
scripts. The descriptions are virtually of one parcel P 
lately published in the Nartvura.isr, in advance of the grt" — 
