fiz] 
XI. On the Structure and Development of the Skull in the STM 
By W. i. Parker, FBS. 
Received June 1st, read November 16th, 1880. 
[Pirates XXXVI—XLI.] 
Introductory Remarks. 
IN the ‘Philosophical Transactions’ for 1877 (part 2, plates 21-29, pp. 529-597) I 
haye given an account of the development of the skull in this group, that of Stredon 
being worked out in several stages, that of Sedronota in the larva and adult, and the 
skull of Proteus in the adult only. 
In a second paper treating of the skull in this group (Trans. Linn. Soe. ser. 2, Zool. 
vol. ii. pp. 165-212) I have given figures and descriptions of the larval and adult skulls 
of several more types of the tailed amphibia. 
In the present paper, through the kindness of Dr. Sclater and the late Professor A. H. 
Garrod, F.R.S., I am able to explain the morphology of the skull of the Menopoma 
and of Stren lacertina (of the latter in two stages), and through Professor Flower’s kind- 
ness, to add to that of the Sieboldia. I had already provided myself with a fine series 
of native Newts, in various stages; and for comparison with the skull of the larger 
kinds just mentioned I could not have had better materials. 
The reader will be able to put these three contributions together as a regular series, 
only interrupted by some little distance of time, and by their necessary appearance in 
the ‘ Transactions’ of three different Societies. 
The following works have been of great value to me in this piece of research, viz. :— 
1. TemMinck and ScuinceEL’s description of the skull of the Great Salamander in 
‘Fauna Japonica.’ Leyden, 1833. 
2. Hyrri, Josepx.—On Cryptobranchus japonicus. Vienna, 1865. 
3. Huxuzy, T. H—“On Menobranchus lateralis,’ Proceedings of the Zoological 
Society of London, 1874. 
4, Huxizy, T. H.—Article “Amphibia,” Enc. Brit. vol. 2, edit. ix. 
5. Wiepersnem, R.—Salamandrina perspicillata und Geotriton fuscus. Geneva, 
1875. 
6. WiepersHem, R.—Das Kopfskelet der Urodelen. Leipzig, 1877. 
7. Wispersuem, R.—“ Zur Anatomie des Amblystoma weismanni,” Zeitschr. f. wiss. 
Zool., Bd. xxxii. Taf. 11, 12, pp. 216-236. 
8. Sréur, Parirp.—‘ Zur Entwickelungsgeschichte des Urodelenschiadels,” Zeit- 
schrift f. wiss. Zool. Bd. xxxiii. Taf. 29, 30. Leipzig, 1879. 
Vou. X1.—PART vi. No. 1.—January, 1882. 25 
