Fig. 133. Chelone midas, third stage.
Letters as in fig. 131. r. rostrum.
Immediately after hatching the yolk-sack becomes withdrawn into the body; while the external part of the allantois shrivels up.
Bibliography.
General.
(154) C. Kupffer and Benecke. Die erste Entwicklung am Ei d. Reptilien. Königsberg, 1878.
(155) C. Kupffer. “Die Entstehung d. Allantois u. d. Gastrula d. Wirbelthiere.” Zoologischer Anzeiger, Vol. II. 1879, pp. 520, 593, 612.
Lacertilia.
(156) F. M. Balfour. “On the early Development of the Lacertilia, together with some observations, etc.” Quart. J. of Micr. Science, Vol. XIX. 1879.
(157) Emmert u. Hochstetter. “Untersuchung üb. d. Entwick. d. Eidechsen in ihren Eiern.” Reil’s Archiv, Vol. X. 1811.
(158) M. Lereboullet. “Développement de la Truite, du Lézard et du Limnée. II. Embryologie du Lézard.” An. Sci. Nat., Ser. IV., Vol. XXVII. 1862.
(159) W. K. Parker. “Structure and Devel. of the Skull in Lacertilia.” Phil. Trans., Vol. 170, p. 2. 1879.
(160) H. Strahl. “Ueb. d. Canalis myeloentericus d. Eidechse.” Schrift. d. Gesell. z. Beför. d. gesam. Naturwiss. Marburg. July 23, 1880.
Ophidia.