518 CATALOGUE OF EXHIBITS. 



University. Exhibited with them are the Eggs of the 

 Pacific Hag-Fish, Bdellostoma stouti. 

 Exhibited by Bashford Dean. 



7. The Pearly Nautilus, Nautilus pompilius. Collected in 



the Solomon Islands, by Dr. Arthur Willey. 

 Exhibited by Edmund B. Wilson. 



8. Earthworm with gills, Alma nilotica, from the Nile Val- 



ley. Exhibited by Edmund B. Wilson. 



9. Born wax-plate model of larval Ceratodus. 



Exhibited by Bashford Dean and J. H. McGregor. 



10. Born wax-plate model of the head of a Seven Day-embryo 



Chick. Exhibited by W. S. Wallace. 



11. Fish and Preparations illustrating a Brook-Trout epi- 



demic due to Sporozoa {iwv. gen. ct. nov. sp.). 

 Exhibited by G. N. Calkins. 



12. Preparation showing Ciliated Cells with Basal Bodies and 



Internal Fibrillae. 



Exhibited by E. U. Van Harlingen. 



13. Photographs illustrating the Natural History of Nova 



Scotia. Exhibited by C. W. Beebe. 



14. Illustrations of Cave Animals ; from Kentucky and Indi- 



ana Caverns. Exhibited by R. Ellsworth Call. 



15. Preparations of the Heads of Harmless and Poisonous 



Snakes. Exhibited by Raymond Lee Ditmars. 



1. Heads of non- venomous snakes, showing the swallowing 



teeth, and representative charateristics. 



a. Heads of Cuban Boa (Xiphisoma) mounted with 



open mouth, to show formation and distribution 

 of teeth. 



b. Head of typical "harmless" snake (water snake) 



showing position of shields. 



c. Skeleton head of Boa (Boa constrictor), showing 



the dentition of a non-venomous snake. 



2. Heads of venomous snakes, showing the poison appa- 



ratus. 



