548 REVIEWS AND BOOK NOTICES. 
the “very distinct and varied song”) are almost precisely iden- 
tical both in this country and in Europe. 
Thryothorus Berlandieri is united to Ludovicianus as a variety; 
and Troglodytes Parkmanni with aedon. T., Americanus Aud. is 
stated to be aedon “in dark, accidentally soiled plumage.” T. 
hyemalis and Alascensis-are given as geographical races of the 
European T. parvulus. Motacilla alba of Europe, like Turdus 
iliacus, has been twice obtained in Greenland, and more frequently 
in Iceland, and is therefore described. A third common European 
species, Anthus pratensis, has also been procured in Greenland, 
and more recently in Alaska. i 
Pages 177-325 are devoted to the Sylvicolidæ, and form a very 
interesting section. Fifty-two species and three varieties us 
enumerated, the genus Dendroica claiming twenty-three species. 
Geothlypis Macgillivrayi receives a distinct article on pp- 303-305; 
n p. 297, and also in the appendix (III, 507), it is stated to : 
be a geographical race of G. Philadelphia. : i 
Icteria longicauda is given as a western form of virens. Thirteen 
species of Vireo, with three varieties V. gilvus var. Swainsoni; V. 
solitarius var. Cassini and plumbeus) are described. On pp- 8 2 
and 364, V. olivaceus is stated to have occurred in England; w d 
it is somewhat questionable whether the specimen obtained Was 
not V. altiloquus.* a 
The number of North American shrikes has been reduced t0 a 
two, Collurio borealis and O. Ludovicianus, with vat. robustus a 
(= elegans, Baird nec Swainson) and var. excubitoroides. w > 
426-428 is given a synopsis of the Certhiolæ, several of W i a 
(besides C. Bahamensis) may very possibly occur as stragglers 
the southern extremity of Florida. 
and our pine 
_ Pyranga Cooperi Ridgway, is united to P. estiva, Me. Bi 
grosbeak to Pinicola enucleator of Europe. Pyrrhula ait of the 
ot a variety O 
is “a well marked and distinct species,” and n : 
European P. coccinea ; it is a Siberian species accidental i ae 
and has been once obtained in Belgium. Loaia Americana 
Mexicana are united to curvirostra as varieties, a00 V 
leucoptera to bifasciata; but in the appendix (HI, 509) w 
are separated as “entirely distinct” species. The det sical 
of our species of Agiothus is as follows :— I. A 
$ : rict, 
Greenland, with var. exilipes of continental Arctic Ame A 
p- gr. Pe 
* Bee a paper by Bree, in the London “ Field,” May 14, 1870 
