28 



W. P. PYCRAFT. 



14. Pycraft, AV. P. "A Contribution towards oui- Knowledge of the Pterylography of the Megapodii." 



Willey's Zoological Results. Part iv. (1900). 



15. Pycraft, W. P. " On the Morphology . . . of the Pala3ognath:e." Trans. Z.S., xv. (1900). 



16. Pycraft, W. P. " Contributions to the Osteology of Birds. Part ii. Impennes." P.Z.S. 1898. 



17. Pycraft, W. P. "Some Points in the Morphology of the Palate of the Neognathse." Journ. Linn. 



Soc. xxviii. 

 IS. Schauiiisland, H. "Zur Entwickl. der Penguine." A'erh. Ges. Deutsch. Naturf. 1891. 



19. Stieda, L. " Ban u. Entwickl. der Feder." Petersb. medic. Zeitschr., Bd. xvii. (1869). 



20. Studer, T. H. " Die Forschungsrei.se S.M.S. ' Gazelle.' " Berlin. Theil iii., 1889. 



21. AVatson, M. "Report on the Anatomy of the Spheniscidse." 'Challenger' Reports, vii. (1883). 



22. Wiman, C. " Die Alttertiiiren Vertebraten der Seymour Insel." Wiss. Ergeb. der Schwedisch. 



Siidpolar-Exped. Bd., iii., Leifr. 1 (190.5). 



Description of Plate. 



Skulls (left side view) and wings (dorsal aspect) of nestling Penguins. 



Fig. 1. Skull of Gafarrhactes chrysocome. 

 „ 2. ,, Spheniscus demersus. 



„ 3. „ Pygoscelis adelm. 



„ 4. „ „ „ (full grown). 



„ 5. „ „ papua. 



„ 6. „ Aptenodytes forsteri. 



„ 7. Hemipterygoid of Aptenodytes forsteri. 



„ 8. Skull of Aptenodytes forsteri. 



„ 9. Right wing of Pygoscelis adeliee. 

 „ 10. „ ,, Aptenodytes forsteri (later stage). 



„ 11. „ „ Pygoscelis adeliae (adult). 



Als. 



bp. 



c. 



dc.i- "- 



fr. 



h. 



hept. 



1.0. 



P- 



= alisphenoid. 



= basipterygoid process. 



= condyle. 



= distal carpalia, 1. 2. :^.. 



= frontal. 



= humerus. 



= hemipterygoid. 



= lateral occipital. 



= parietal. 



I. II. III. = Digits I. II. III. 



Figs. 1-6 and 8. Slightly reduced (| nat. size). 

 Fir. 7. Enlarged. 



., 9. Four times natural size. 



,, 10. Five times natural size. 



„ 11. Slightly reduced (J- nat. size). 



