8 ME. E. T. NEWTON ON THE OCCTJEKENCE OF [Feb. 1904, 



12. H. Tral'tschold. 'Ueber Edestv.s und einige andere Fischreste des Moskauer 



Bergkalks ' Bull. 80c. Imp. Nat. Moscou. vol. lviii, pt. ii, 1883 (1884) p. 160 & 

 pi. v, figs. 1 & 2. 



13. . ' Ueber das Genus Edestus ' Ibid. vol. lxi, pt. ii. 1885 (1886) p. 94. 



14. H. Woodward. 'On a Remarkable Ichthyodorulite from the Carboniferous 



Series, Gascoyne (Western Australia) ' Geol. Mag. 1886, p. 1 & pi. i. 



15. Fanny R. M. Hitchcock. ' On the Homologies of Edestus ' Proc. Am. Assoc. 

 Adv. Sci. (Thirty-sixth Meeting, New York, August 1887) Salem, 1888, p. 260. 

 Also Amer. Nat. Vol. xxi (1887) p. 847. 



16. H. Trautschold. ' Ueber Edestus protopirata, Trd.' Zeitschr. Deutsch. 

 Geol. Gesellsch. vol. xl (1888) p. 750. 



17. J. S. Newberry. 'On the Structure & Relations of Edestus, with a De- 



scription of a Gigantic New Species' Ann. N. Y. Acad. Sci. vol. iv, no. 1, 188$ 

 (1889) p. 113 & pis. iv-vi. See also ' The Pala?ozoic Fishes of North America ' 

 Monogr. U.S. Geol. Surv. vol. xvi (1889) p. 217 & pis. xxxix-xi. 



18. H. Trautschold. 'Ueber Protopirata centrodon, Trd.' Bull. Soc. Imp. 

 Nat. Moscou. n. s. vol. iv. 1890 (1891) p. 317. 



19. A. Smith Woodward. Catal. Foss. Fishes Brit. Mus. pt. ii (1891) p. 151. 



20. BIshford Dean. 'On a New Species of Edestus (E. Lecontei) from Nevada ' 

 Trans. N.Y. Acad. Sci. vol. xvi (1898) p. 61 & pis. iv-v. 



21. A. Karpinski. ' Ueber die Reste von Edestiden und die Neue Gattung Heli- 



coprion' Verb. K.-Russ. Mineralog. Gesellsch. ser. 2, vol. xxxvi (1899) p. 361 & 

 pis. i-iv ; also Mem. Acad. Imp. Sci. St. Petersb. ser. 8, vol. viii, no. 7 (1899) 

 pp. 1-76 & pis. i-iv. 



22. C. R. Eastman. [Review of Karpinski's Memoir. Amer. Nat. vol. xxxiv 



(1900) p. 579. 



23. . 'On Campodus variabilis,!^. & W." Denver Meeting Amer. Assoc. Adv. 



Sci. n.s. vol. xiv (1901) p. 795. 



24. . 'On Campyloprion, a New Form of Edestv.s-Yike Dentition' Geol. Mag. 



1902, p. 148 & pi. viii. 



25. . 'Some Carboniferous Cestraciont & Acanthodian Sharks' Bull. Mus. 



Comp. Zool. Harvard Coll. vol. xxxix, no. 3 (1902) p. 55 & pis. i-vii. 



26. . 'Carboniferous Fishes from the Central Western States' Ibid. vol. xxxix, 



no. 7 (1903) p. 184 & pi. i. 



27. [Review of Karpinski's Memoir.] Bull. Soc. beige de Geol. vol. xiii (1903) for 



1899, p. 205. 



28. E. Van den Broeck. r On the same.j Ibid. p. 215. 



29. A. Smith Woodward. 'Note sur VHelicopHon et les EdestideV Ibid. 

 p. 230. 



30. G. Simoens. 'Note sur Helicoprion Bessonowi (Karpinsky) ' Ibid. p. 235. 



31. C. Van de Wiele. ' Apercu sur les Vestiges tossiles d'Edestides, & le nouveau 

 Genre Helicoprion ' Ibid. p. 244. 



32. H. Yabe. ' On Fusulina-IAme&tone with Helicoprion in Japan ' Journ. Geol. 



Soc. Tokyo, vol. x, no. 113, Jan. 20th (2563) 1903, p. 8. 



EXPLANATION OF PLATE I. 



Edestus triserratus, sp. nov. 



From the Coal-Measures of Nettlebank (Staffordshire), preserved in 

 the Museum of Practical Geology, Jermyn Street, London. 



Fig. 1. Side view. Natural size. 



2. Seen from above. Natural size. 



3. Side view of crown and part of base. Two and a half times the natural 



size. 



4. Crown and part of base seen from above. Two and a half times the 



natural size. 



5. Section of base at h. Two and a half times the natural size. 



6. View of broken end (a, e, d). Two and a half times the natural size. 



7. Denticles showing triserration. Six times the natural size. 



