ANATOMY AND PHYSIOLOGY, OOLOGY. 
39 
jaws bony elevations to all intents and purposes equivalent to teeth. 
These singular and forwardly directed denticles, consist apparently of 
bone tissue rather than that distinguishing true teeth. In shape, situa- 
tion, &c., they agree with the latter, but, unlike the fossil (Cretaceous) 
Ichthyornis, are not implanted in distinct sockets. The contour of the 
skull, orbital areas, and presence of quadrate, show alliances with the 
swimming birds. Besides figures of this rare and extraordinary speci- 
men, a restoration in outline has been attempted, and sectional views of 
the microscopic structure of the teeth are given. 
PiSnaud, a. Historique de la question du glissement de I’oiseau dans 
I’air. C. R. Ixxviii. pp. 329-332. 
Calls in question Marey’s priority {cf. also Planavergne, tom. cit. 
p. 262; Tresca, tom. cit. pp. 466-471), and gives a summary of the leading 
authorities who have previously advocated the laws of aerial motion. 
The author seeks to produce a mathematical formula expressive of the 
bird’s displacement and translation. 
Sapatiku, a. Observations sur les Transformations du Syst^me Aor- 
tique dans la Serie des Yertdbres. Ann. Sc. Nat. (5) xix. pp. 1-33, 
pi. x. 
The result of these embryological studies is somewhat at variance with 
the universally adopted notions of Rathke, concerning the development 
of the aortic blood-vessels. Of the five left primitive branchial arches 
in the bird, the author believes the 4th and 5th branches to be those 
which are arrested, and that from the 3rd (and not 4th) the brachial 
artery is derived. From this and other considerations respecting the 
development of the heart, i^ is that the original left aorta receives little 
blood, and finally disappears, whilst augmentation and the early relative 
importance of the brachiocephalic vessel ensues. 
Wood-Mason, J. On the occurrence of a superorbital chain of bones 
in the Arboricolse (Wood-Partridges). J. A. S. B. (2) xliii. pt. 2, 
pp. 254 & 255, pi. ii. [Tetraonidce.] 
OOLOGY. 
Brown, J. A. Harvir. Letter from. Ibis, 1874, pp. 96 & 97. 
On the breeding of some Now Zealand birds. 
Harting, j. E. On the eggs of some rare or little known Limicolcc. 
P. Z. S. 1874, pp. 454-460, pi. lx. ICharadriidce, Scolojiacidce, 
GlareoUdo},'] 
Hume, A. 0. Nests and Eggs of Indian Birds. Rough draft. Part ii. 
Calcutta : 1874, 8vo, pp. 237-489. 
In continuation of the part noticed in Zool. Rec. x. p. 44. 
Nathusius, W. von. Nachweis des speciesunterschiedes von Corvus 
cor one und Corvus cornix, und ilirer hiiufigen Verbastardirung an den 
Eierschalen. J. f. O. (4) 1874, ii. pp. 1-26. 
V The value of the microscopic structure of the egg-shell as a means of 
specific diagnosis is insisted on ; instances in point from various bird- 
