CONTRIBUTIONS FROM WALKER MUSEUM 



A NEW SERIES— VOLUME II 



No. I. The Structure and Relationships of Diplocaulus. 

 With plates. By Herman Douthitt. 28 cents postpaid. 



No. 2. Labidosaurus Cope, a Lower Permian Cotylosaur 

 from Texas. By Samuel W. WiUiston. 28 cents postpaid. 



No. 3. The Phylogeny and Classification of Reptiles. 

 By Samuel W. WiUiston. 28 cents postpaid. 



No. 4. (i) The Evolution of Vertebrae; (2) The Osteology 

 of Some American Permian Vertebrates. III. By Samuel 

 W. WiUiston. 52 cents postpaid. 



TITLES IN VOLUME I 



No. I. The Vertebrates from the Permian Bone 

 Bed of Vermilion County, lUinois. With plates. 

 By E. C. Case. 53 cents postpaid. 



No. 2. Prodromites, A New Ammonite Genus 

 from the Lower Carboniferous. With plates. By 

 James Perrin Smith and Stuart Weller. 27 cents 

 postpaid. 



No. 3- Palaeontological Notes. With plates. 

 By E, C. Case. 27 cents postpaid. 



No. 4. New or Little-known Vertebrates from 

 the Permian of Texas. With plates. By E. C. 

 Case. 27 cents postpaid. 



No. 5. The Stokes Collection of Antarctic Fos- 

 sils. With plates. By Stuart Weller 27 cents 

 postpaid. 



No. 6. (i) The Osteology of the Skull of the 

 Pelycosaurian Genus, Dimetrodon. (2) On the 



Structure of the Fore Foot of Dimetrodon. 

 By E. C. Case. 27 cents postpaid. 

 No. 7. Notes on Some Carboniferous Cochlio- 

 doEts. With descriptions of seven new species. 

 With plates. By E. B. Branson. 27 cents post- 

 paid. 



No. 8. The Osteology of Some -American Per- 

 mian Vertebrates. By Samuel W. WiUiston. 29 

 cents postpaid. 



No. 9. (i) The Osteology of Some American 

 Permian Vertebrates. II. (2) Synopsis of the 

 American Permo-Carboniferous Tetrapoda. By 

 Samuel W. WiUiston. 29 cents postpaid. 

 No. 10. (i) Atactocrinus, a New Crinoid Genus 

 from the Richmond of Illinois. (2) Description 

 of a Ste . Genevieve Limestone Fauna from Monroe 

 County, IlHnois. By Stuart Weller. 28 cents 

 postpaid. 



Vol. I, 274 pages, cloth; $2.50 {postpaid $2.70) 



THE UNIVERSITY OF CHICAGO PRESS 



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