88 ZOOLOGICAL LITERATURE. 
Pelzeln, a. von. Ueber Farbenabanderungen bci Vbgeln. 
Verhaiidl. zool.-bot. Gesellscli. Wien^ 1865^ pp. 911-946, 
This contains the remarks, with additions, on the same sub- 
ject introduced into the author^s portion of the zoology of the 
^ Novara^ voyage (pp. 14-25), already mentioned under the 
heading General Subject,^^ wherein he confined himself to the 
Falconida. Of the kind of variation which Herr von Pezeln 
calls Albinismus,^^ his observations are founded on complete 
instances in 32 species, incomplete in 45, and partial in 37. 
Of Mehinismus co^nplete instances are mentioned in 15 spe- 
cies, iuc^plete in 6, and partial in 2. Of Erythrismus there 
are 17 cases. (Cf, Ibis, 1866, p. 209.) 
ScLATEB, P. L. On the Structure of Leptosoma discolor, Proc. 
Zool. Soc. 1865, pp. 682-689. 
In this bird the body-feathers have a long, downy auxiliary 
plume, which is entirely deficient in the Cuculidce, The upper 
ptilosis resembles that of Coracias and Eurystomus, the spinal 
tract bifurcating between the shoulders. The branches are then 
discontinuous for a short space, but reappear and unite on the 
rump, where a very abnormal feature presents itself, to be found 
neither in the CoraciidcB nor in any other group of Picarice, 
This is the existence of two large and highly-developed powder- 
down patches placed on the flanks on each side of the rump. 
The oil-gland almost entirely disappears. Figures showing 
these peculiarities illustrate this interesting paper. 
NEOSSOLOGY. 
Pettoni, Eu. Storia Naturale degli Uccelli die nidificano in 
Lombardia, &c. [See under heading Pala:aiictic 11e- 
GioN.^^] Milano : 1865. Folio. Fascicoli i.-iii. 
The young 'of Calamoherpe turdoideSf Ardeola minuta, Pra- 
tincola 7'ubetra, Coturnix communis^ and Curruca atricapilla are 
figured. 
Gould, J. The Birds of Great Britain. London : 1865. 
Part VII. includes figures of the very young state of Falco 
msalon and Vanellus ci'istatusy and Part VIII. those of Ardea 
cinereay Bternula minutay Stei'na hirunday Fratercula arcticay 
and Stercorarius parasiticus, 
Marchand, a, Poussins des oiseaux d^Europe converts de 
duvet h la sortie de Toeuf. Bev. et Mag. de Zool. 1865. 
The series of illustrations for the past year includes the fol- 
lowing species 
