PLATE II. 



Osteology of Penguins. 



(All the figures are of the natural size.) 



Fig. 1. — Lateral view of skull of Sjjheniscus demersus. 



Fig. 2. — Vertex of skull of same. 



Fig;. 3. — Base of skuU of same. 



Fig. 4. — Occiput of skull of same. 



Fig. 5. — Lateral view of skull of Sjyheniscus magellanicns. 



Fig. 6. — Vertex of skull of same. 



Fig. 7. — Base of skull of same. 



Fig. 8. — Occiput of skull of same. 



