AVES. 
61 
therefore have come from elsewhere and it is also proved that 
the larger the area such localities present the more diverse are 
the forms which inhabit them. The birds must have spread by 
migration ; and it remains for geologists to point out the centre 
of distribution whence they have radiated, for it will then be 
proved that the differential characters they possess are due to 
the new conditions under which they found themselves. 
Finally Dr. Pucheran asserti^ the unity of distribution of con- 
temporary faunas. Setting out from one and the same centre, 
the different forms spread to places of very different physical 
conditions, the action of which has modified them to their pre- 
sent state* Geology, he conceives, will throw sufficient light on 
these changes to enable us to learn their history. (See above. 
Mammalia.'^) 
ScLArER, P. L.> and Salvin> Osbert. Exotic Ornithology. 
Parts II.-IV. London : 1867. Imp. 4to, pp. 17-64, 
pis. ix.-xxxii, 
Three parts of this wbrk have appeared during the past yCar. 
The species figured are noticed under the families to which they 
belong. They are all from the New World; and a synopsis of 
the American species of the genera ThlogopsiSy Nyctibius, 
Ctjphorhinus , Myiadestes (now placed with the TurdidcB)^ Hy- 
lacteSy (Edicnemus, and Lanio is given. {Cf. Ibis, 1867, p. 372, 
1868, p. 335.) 
[Wallace, A. 11.] Mimicry and other Protective Resem- 
blances among Animals. Westminster Review. July, 1867, 
pp. l-4'3. 
Most of the examples cited are entomological ; but a few are 
from birds, and the especially remarkable cases of the close 
superficial resemblance between Mimeta houruensis, M, forstem, 
M. virescens, and M. ph{jeochromus, and the species of Tropido- 
rhynchus {T, houruensis y T, subcornutuSy T. timorensiSy and 
fuscicapiltus) y respectively inhabiting the same islands of 
Bourn, Ceram, Timor, and Morty, are dwelt upon. The 
facts also of the females of Phalaropus fulicariusy Eudromias 
morinelluSy and of the genus Turnix being larger and more 
brightly coloured than the males are also quoted to prove the 
theory of Sexual Selection.^^ 
Wiese, — . Die Vogel als Verkiindiger des Wetters. Journ. 
fur Orn. 1867, pp. 145-149. 
This paper consists mostly of assertions, with some recorded 
facts, to show that birds can prognosticate changes of the 
weather. 
PALiBARCTIC REGION. 
Alleon, — . Note sur deux especes d^Oiseaux qufil convient • 
dfintroduire dans la faune europeenne. Rev. et Mag. de 
' Zool. 1867, pp. 3-7. 
