REPORT ON THE ANATOMY OF THE PETRELS. 7 
Section Puffinese— 
Mcyjaqueus, Adamastor, Thiellus, Nectris, Puffinus. 
Section Cstrelateee— 
Cistrelata, Pagodroma, Daption. 
Section Prionese— 
Halobena, Pseudoprion, Prion. 
Section Fulmareee— 
Fulmarus, Thalasseca, Ossifraga. 
Although the names of these five sections are the same as Bonaparte’s, yet the genera 
included in them are, it will be seen, different, the arrangement in many respects being 
more natural. 
1867. Eyton in his Osteologia Avium? describes briefly some of the more salient 
features of the osteology of Ossifraga gigantea, Diomedea exulans and Suliginosa, 
Puffinus major (and another undetermined species), and Thalassidroma oceanica 
(=? Oceanites). The skeletons of the Ossifraga, Diomedea exulans, and Thalassidroma 
are figured, with details of some of the bones. 
The same year witnessed the publication of M. Alphonse Milne-Edward’s great work 
on fossil birds.’ Pages 301-341 of the first volume are devoted to the consideration of 
the osteology of the living Longipennes, composed of the Gulls (Laride) and Petrels 
(Procellariidee). The Petrels are considered to be, as regards their osteological characters, 
allied most closely to the Gulls, with some resemblances to the Steganopodes. “ Par 
quelques-uns de leur caractéres, les Procellarides se lient aux Totipalmes. Ainsi on ne 
peut se refuser & reconnditre une grande ressemblance entre la constitution de la charpente 
osseuse des Frégates, des Phaétons, c’est-d-dire des Totipalmes grand voiliers et celle des 
Pétrels ou des Puffins. Cette analogie a Vailleurs été parfaitement saisie par L’herminier, 
qui cependant n’avait étudié que la conformation de l’appareil sternal” (Joc. cit., pp. 
302, 303). 
A complete skeleton of Prion vittatus is figured on plate 1. fig. 1, with numerous details 
of the bones of Puffinus cinereus—skull (pl. xlix. fig. 12), leg-bones (pl. li.), pelvis and 
humerus (pl. lii.), sternum and scapular arch (pl. liii.). 
Hydrorms natator (pp. 362-365, pl. lvii. figs 18-22), from the Miocene deposits 
of Langy, is perhaps allied to the Shearwaters (Puffinus), but the remains found (a 
tarso-metatarsus, and a femur of doubtful ownership) do not suffice to decide the point 
certainly. 
Professor Huxley’ places the Petrels with the Gulls, Divers, and Auks in the 
1 London, 1867, pp. 221-225, 
2 Recherches anatomiques et paléontologiques pour servir 4 histoire des oiseaux fossiles de la France, Paris, 
1867-1868, 
$ On the Classification of Birds, Proc, Zool, Soc., 1867, pp. 415-472. 
