THE GENERA n SUBJECT. 
Aves 11 
Gadow, Hans. Versuch einer vergleichenden Anatomie des Verdau- 
unga-systemes der Vogel. Jen. Z. Nat. xiii. pp. 92-171, 339-403, 
pis. iv.-xiii. & xvi. 
An elaborate article on the digestive organs of birds ; the result 
arrived at being the formation of some highly artificial groups. [For 
details, see a criticism by W. A. Forbes, Ibis, 1880, p. 234.] 
Gatke, H. The Migration of Birds; Nature, xx. pp. 97-99. [See 
Weissmann, a.] 
. [Records of Recent Stragglers to Heligoland.] Ibis, 1879, 
pp. 102-104, 220, 378-380, & 388. 
The rarities are Phylloscopus viridanus [Sylviidm'], Emberiza pyrrhu'- 
hides and E. melanocephala \Emberizid(E\ Alauda pispoletta [^Alandidce]. 
Garuod, a. H. Notes on Points in the Anatomy of the Hoatzin {Opis- 
thocomus cristatm). P. Z. S. 1879, pp. 109-114. 
Remarks on, with woodcuts of, the trachea are followed by investiga- 
tions of the myology of this species, the deduction being that Opistho- 
comus must either be classed with the Gallinaceous Birds, or form a group 
by itself. A diagram is given to show these and other affinities, [0/)^s- 
tJiocornidce.'] 
. On the Conformation of the Thoracic Extremity of the Trachea in 
the Class Aves. Part i. The Gallinoe. Tom. cit. pp. 354-380. 
Numerous woodcuts illustrate the text, and the result of examination 
points to two divisions of this family, the Coturnicine and the Pha- 
sianine. 
Gatcombe, J. Ornithological Notes from Devon and Cornwall. Zool. 
1879, pp. 112-116, 205-208, 418-420. 
Gibbs, Morris. Annotated List of the Birds of Michigan. Bull. U. S. 
Geol. Surv. v. pp. 481-497. 
Gibson, Ernest. Ornithological Notes from the Neighbourhood of 
Cape San Antonio, Buenos Ayres. Ibis, 1879, pp. 405-424. 
In this first instalment of a series of papers the habits of the Accipitres 
and Striges are graphically described. 
Giglioli, E. H., & Mazella, A. Iconografia dell’ Avifauna Italica 
ovvero Tavole illustrante le specie di Uccelli che trovansi in Italia. 
Prato (Toscana) : 1879, fo. Fascicoli i. & ii. 
The commencement of a work in which it is proposed to describe and 
illustrate the 418 species which Giglioli includes in the Italian avi- 
fauna. The species described (and figured by Mazella) are, Pt. i., 
Falco covimunis^ Lanius excubitor, Lagopus mutus, Bucephala clangula, 
Stej'nula minuta\ (Pt. ii.) Cerchneis tinnuncula [sic], Caprimulgus 
cegyptius, Houbara macqueeni, Hydrornia [^PorpTiyrid] alleni, Tadorna 
cornuta. 
Gill (Mrs.). [In “ Six Months in Ascension,” London, 1879, an inter- 
esting account is given (pp. 260-265) of Mr. Gill’s visit to Boats- 
wainbird Island ; pp. 206-211 treat of the well-known breeding- 
