38 
ZOOLOGICAL literature. 
witli Struthiotiidcej^^ and the genera Rhynchotis and Tinamus 
are comprehended in it^ while Notornis is referred to Grallatores 
A place is also assigned to Ai'chceopteryoc for the first tipip h^ 
Prof. Owen. 
Pettigrew, J. B. On the Mechanical Appliances hy which 
Plight is obtained in the Animal Kingdom. Trans. Linn. 
Soc. xxvi. pp. 197-277, pis. xii.-xv. 
We last year mentioned (Zool. llec. iv. p. 50) the abstract of 
this paper, the subject of which hardly comes within our pro- 
vince. The illustrations are very good. {Of. Ibis, 1868, p. 476.) 
ScLATER, P. L., and Salvin, Osbert. Exotic Ornithology. 
Parts V.-VIII. London : 1868. Imp. 4to, pp. 65-128, pis. 
xxxiii.-lxiv. 
The four parts of this work which have been published during 
the last year are on the same plan as those. which preceded 
them (Zool. Bee. iii. p. 48, iv. p. 51). The species figured are 
all American, and will be mentioned in our notice of the families 
to which they belong. Complete lists of the New-World species 
of Scops, Chcetura, and Laterirallus are given. {Of. Ibis, 1868, 
pp. 836, 337; 1869, pp. 109, 110.) 
Wagner, Moritz. Ueber die Darwin^sche Thcoric in Bezug 
auf die geographische Verbreitung der Organismen. Sitz- 
ungsb. k. bayer. Akad. Wissensch. 1868, i. pp. 359-395. 
. Die DarwiiTsche Theorie und das Migrationsgesetz der 
Organismen. Leipzig : 1868. 8vo, pp. 62. 
The second of these papers is a separate reprint of the fii'st, 
with the addition of a few unimportant details. The author docs 
not use the word migration in the special sense commonly 
^scribed to it hy ornithologists, hut seems to mean hy it any 
^hifting of abode [sec Mammalia,'’^ p. 2] . Such a migration^^ 
he contends is necessary before Natural Selection can act ; hut 
this, as it seems to us, does not at all invalidate the theory of 
Mr. Darwin, who, so far as we know, has always maintained 
the power of Natural Selection to take advantage of any change 
of circumstances whatsoiever, and has never professed that the 
process can act Avithout opportunity. The ornithological ex- 
amples cited by Prof. Wagner arc not numerous (pp. 13, 31, 43) 
and do not call for any special remark. 
PALiEABCTIC BEGION. 
Altum, B. Eine ornithologische Morgenexcursion. Journ. fur 
Orn. 1868, pp. 206-211. [See also Homeyer, Eug. F. von.] 
This has chiefly to do with the time at which various species 
begin their song or cries. [Cf. Jenyns^s ^Observations in 
Natpral History ^ (London : 1846), pp. 94-102.] 
• Barnard, M. B. (See Paijkull, C. W.) 
