44 
AYES. 
of the genus Ochthoeca {Tyrannidai)^ with the description of a 
new speciesj and a new species of Heteropelma {Cotingidai).J 
.SuNDEVALL, C. J. Ou BMs froHi the Galapagos Islands. Tom, 
cit. pp. 124-130. 
A list of 26 species^ of which two are new {Ardeiday Sphenis- 
cid(a)y obtained by the Swedish ^Eugenie"’ expedition in 1852. 
llemarks on the species allied to some of those recorded arc 
added. Some are noticed from the Galapagos for the first 
timey 
^<”Wyatt, Claude W, Notes on some of the Birds of the United 
States of Columbia. Ibis^ 1871^ pp. 113-131, 319-325, 
373-384, pi. y. 
( Gives good notes on 210 species, some of them very rare, their 
names being determined by Messrs, Salvin and Sclater. A map 
of the route traversed by the author, and a well written account 
of his journey, are prefixed, j 
ANATOMY AND PHYSIOLOGY. 
Collett, R. On the asymmetry of the Skull in Strix tengmalmi. 
P. Z. S. 1871, pp. 739-743, figs. Strigidee.'] 
/CouES, E. Mechanism of Flexion and Extension in Birds' 
Wings. Am. Nat. v. pp. 513, 514. 
^Abstract of a paper read at the Indianapolis meeting of the 
American Association for the Advancement of Science. Flexion 
of the forearm upon the humerus produces flexion of the hand 
upon the forearm by osseous mechanism alone, and extension of 
the forearm causes extension of the hand. In either movement 
the radius slides lengthways along the ulna.^ 
/Cunningham, R. O. Notes on some points in the osteology of 
Rhea americana and R. darwini. P. Z. S. 1871, pp. 105-110, 
pis. vi., vi^y [See Rheidce^ j 
/Flower, W. H. On the Skeleton of the Australian Cassowary 
{Casuarius australis), Tom. cit, pp. 32-35. [See Ca- 
suariid(s.'\ / 
/Gegenbaur, C. Beitrage zur Kenntniss des Beckens der Vogel. 
Jen. Z. Nat. vi. pp. 158-220, Taf. v., vi., vii. 
An important work [on the pelvis of birds, the structure of 
which in various genera is figured.^ 
/Kossmann, R. Ueber die Talgdriisen der Vogel. Z. wiss. Nat. 
, 1871, pp. 568-599, pis. xliii., xliv. 
( After a summary of the literature of the subject and a com- 
parison of the corresponding structures in Mammals, a sufficiently 
