REVIEWS. 235 
we be surprised if B. Hutchinsii itself were finally resolved into a 
conspecies with B. Canadensis, despite the nearly constant discre- 
pancy in the number of rectrices. A. cærulescens, on the contrary, 
appears perfectly distinct, as Dr. Bannister has it; and B. leu- 
copsis has lately been twice authenticated as American. The 
author queries A. ferus and A. segetum as American; we do not 
know upon what authority, having had no previous suspicion of 
their occurrence in this country. A comparison of the North 
American and European Anseres, given below,* which we are, in 
part, enabled to make through the personal attentions of Prof. A. 
Newton, offers some interesting points : — 
Thus it appears that while Anser proper is essentially European, 
and Chen as decidedly North American, they have both been devel- 
oped in a parallel series, as it were, to an equal number of species, 
that may be regarded as strictly analogous, each for each. Such a 
division of the geese is in remarkable contrast to the great number 
of species as well as genera of ducks that are common to bot 
countries. But without space to pursue the subject, we turn to 
the second paper above alluded to. 
Mr. Ridgway very creditably maintains{ the position he se- 
cured by his first contribution to ornithology, in this more elabo- 
rate paper, which is, nevertheless, only “‘ preliminary to a ‘mono- 
graph of the North American Raptores,’” upon which he has been 
long engaged. We trust it may soon appear, since, to judge by 
this forerunner, it promises to be of high interest and importance. 
*Genus ANSER auct. : 
SERRES ] e [Europæi. 
b. ANSER ipse. 
a.’ Variegatus, aiie colloque albis. 
Cerulescens L. Ferus L. hn oa rostri albo, campterio pal- 
b.' Nivei, rem. primar. nigris. lidè : 
Hyperboreust Pall. Major; long. tot. pfe pm gue nigro, N fus- 
ae alis fer® 11-ped., rost. 2ł}-  cogriseo, ei aurantiac 
on s Cass. Minor; ge! tot. bipe- Brachyrhynchus Baill. Rost. breviss., ungue 
B alis 1}-ped., rost. bipoll. nigro, p p ped. incarnatis 
i Bd. Minimus; rost. verru- Erythropus ec auct. ; minutus N., 
AA inal similis A niaii. 
p 
peep ‘ 
(b. ANSER ipse.) 
Gambeli Hartl. Simillimus A. albi- Albifrons Gm. Ungue albo, campterio fusco- 
fronti; rostro longiore (1ł—2-poll.). griseo, sear aurantiacis, rostri long 
14—1}-po. 
221.) 
tChen hyperboreus also occurs in Europe. Laat Naum. V, D., xi, 
tA New Classification of the North American Falconide, vin eee of three 
New Species. Proc. acad. Nat. Sci. Philad., Sept.Dec., 1870, p. 138 
