1889. ] THE BODY-CAVITY IN LIZARDS, ETC. 471 
They can, however, be compared with the latter by reason of the 
fact that the Birds can themselves be compared with the Lizards. 
The Lizards would seem, so to speak, to form the nearest approach 
to a “greatest common measure” for the Birds and Crocodiles at 
present available, in the absence of much wanted embryological data 
with regard to the latter. 
5. The family of the Teiide is noteworthy from the development, 
at any rate among some of its members, of a more or less complete 
post-hepatic septum, and for the absence of the usual attachment 
between the lung and liver-lobe of the right side. 
VII. List or princrpaL Memoirs anp PAPERS REFERRED TO. 
1. Sappey.—Recherches sur Yappareil respiratoire des Oiseaux. 
1847. 
- Cavrat.—Du développement de la portion céphalothoracique de 
Pembryon. Journal de l’ Anatomie et de la Physiologie, vel. 
xiv. 1878, pp. 630-674. 
3. His.—Mittheilungen zur Embryologie der Saugethiere u. der 
Menschen.” Archiv fiir Anat. u. Phys. 1881, Anat. Abth. 
4. Huxtry.—On the Respiratory Organs of Apteryx [comparing 
with Duck]. P. Z. 8. 1882, pp. 560-569. 
5. Uskow.—Ueber die Entwickelung des Zwerchfells des Pericard. 
u. d. Coeloms. Archiv fiir mikr. Anat. 1883, pp. 143-219. 
6. Lockwoop.—The early development of the Diaphragm, 
Pericardium, and Great Veins. Phil. Trans. 1888, pp. 365— 
384. 
7. Lockwoop.—Abstract of Lectures on the development of the 
Organs of Circulation and Respiration, including the Pericar- 
dium, Diaphragm, and Great Veins. Brit. Med. J ournal, April 
, 1888. 
8. Duvat.—Atlas d’Embryologie. Paris, 1888. 
9. Ravn.—Ueber die Bildung der Scheidewand zwischen Brust 
und Bauchhohle in Siiugethierembryonen. Archiv fiir Anat. 
u. Phys. 1889, Anat. Abth. pp. 123-154. 
10. Srrauxi und Carrus—Entwickelungsgeschichte des Herzens 
u. der Korperhéhlen. Archiv fiir. Anat. u. Phys. 1889, Anat. 
Abth. pp. 231-248. 
bo 
Postscript. 
While these pages were passing through the press my attention 
was, by Prof. Howes, directed to a paper by Ravn (Archiv fiir Anat- 
omie und Physiologie, Anat. Abth. 1889, p. 412), published after the 
sending in of my own. 
This is one of a series of papers by that author on the develop- 
ment of the diaphragm and adjoining organs. In it the various 
membranes and septa that are visible in the body-cavity of the adult 
male Lacerta viridis are carefully described with the aid of figures, 
He calls attention to certain membranous tissue posterior to the 
heart which he would regard as representing part of the more 
