386 



Prof. Riqjert Jones and Dr. H. Woodirard- 



(resembling that in the telson of Limulus) pointed at the distal 

 extremity, and more or less spinose, as shown by the bases of 

 attachment for small lateral prickles, and (2) two shorter, simpler, 

 lateral appendages (stylets). The surface of the valves has a lineate 

 ornament, and the ventral margin has a thin raised rim. 



Cjeratiocaris, M'Coy, 1849. 



839. Onchus, Agassiz (in part). In Murchison's Silurian System, p. 607. 



848. Onchus, Phillips (in part). Mem. Geol. Surv. vol. ii. part i, p. 226. 



849. Pterygotus, M'Coy. Ann. Mag. N. H. ser. 2, vol. iv. p. 394. 

 849. Ceratiocaris, M'Coy. Ann. Mag. N. H. ser. 2, vol. iv., p. 412. 

 851. Pterygotus, M'Coy. Brit. Palgeoz. Fossils, fasc. I, p. 175. 



851. Leptocheles, M'Coy. Brit. Palasoz. Fossils, fasc. i, p. 176. 

 851. Ceratiocaris, M'Coy. Brit. Pateoz. Fossils, fasc. I, p. 136. 



851. Pterygotus {Leptockeles), Bronn. Lethsea Geognost. vol. i. part i, p. 40. 



852. Onchus, James Hall. Geol. Surv. New York, Palseontol. vol. ii. p. 320. 



852. Ceratiocaris, Bronn. Leth. Geogn. vol. i. part 2, p. 539. 



853. Dithyrocaris, Geinitz. Verst. Grauwack. Saclisen, Heft 2, p. 23. 

 853. Leptocheles, M'Coy. Quart. Journ. Geol. Soc. vol. ix. p. 13. 



853. Ceratiocaris {Leptocheles), Barrande. Neues Jahrb. fiir Min. etc. 1853, 

 Heft 3, p. 342. 

 Dithyrocaris ? D. Sharpe. Quart. Journ. Geol. Soc. vol. ix. p. 158. 

 Ceratiocaris et Leptocheles, Murchison. Siluria, 1st edit. p. 236. 

 Ceratiocaris, Morris. Catal. Brit. Foss. 2nd edit. p. 102. 



Salter. Quart. Journ. Geol. Soc. vol. xii. p. 33. 

 J. Hall. Geol. Surv. New York, Palseontol. vol. iii. p. 420. 

 Salter. In Murchison's Siluria, 2nd edit. (3rd including 

 , pp. 262, 538. 



Salter. Ann. Mag. Nat. Hist. ser. 3, vol. v. p. 158. 

 James Hall. Sixteenth Ann. Rep. of Regents, p. 72, pi. i. 

 H. Woodward and Salter. Catal. and Chart. Foss. Crustacea. 

 H. Woodward. Geol. Mag. Vol. II. p. 401. 

 Huxley and Etheridge. Catal. Foss. Mus. Pract. Geol. p. 79. 

 H. Woodward. Geol. Mag. Vol. III. p. 203. 

 Salter. Mem. Geol. Surv. vol. iii. p. 294. 

 Salter. In Murchison's Siluria, 3rd edit. (4th including Sil. 

 236 and 516. 



Bigshy. Thesaur. Silur. p. 73. 

 H. Woodward. Geol. Mag. Vol. VIII. p. 104. 

 H. Woodward. Geol. Mag. Vol. IX. p. 564 ; and Report 



853. 

 854. 

 854- 

 856. 



859- 



Ceratiocar 

 Ceratiocaris. 



859. Ceratiocaris, 



Sil. Syst' 



860. Ceratiocaris. 

 863. Ceratiocaris. 

 865. Ceratiocaris, 

 865. Ceratiocaris. 



865. Ceratiocaris. 



866. Ceratiocaris 

 Ceratiocaris. 

 Ceratiocaris. 



Syst.) pp 

 Ceratiocaris, 

 Ceratiocaris. 



866. 

 867. 



871. 



872. Ce!'atioca7'is. 



872. 

 873- 

 87: 



Brit. Assoc, for 1872, p. 323. 



Ceratiocaris 

 Ceratiocaris. 

 Ceratioca7'is. 



873. Ceratiocaris. 



874. Ceratiocaris. 



876. Cei'atiocai-is. 



877. Cera tioca ris. 

 877- Ceratiocaris., 



878. Ceratiocaris, 

 878. Ceratiocaris. 

 878. Ceratioca7'is, 

 880. Ceratiocaris 



Ceratiocaris. 

 Ceratiocaris. 



Twelfth 

 Ceratiocaris. 



882. 

 883. 



Ceratiocaris. 

 Ceratiocaris, 

 Ceratiocaris. 



93- 



Barrande. Syst. Sil. Boheme, vol. i. Suppl. p. 437. 

 Salter. Catal. Cambr. Sil. Foss. Woodw. Mus. p. 177. 

 R. Etheridge, jun. Mem. Geol. Surv. Scot. Exp. M. 23, p. 

 Marschall. Nomenclator Zoologicus, p. 404. 

 R. Etheridge, jun. Ann. Mag. N. H. ser. 4, vol. xiv. p. 9. 

 F. Roemer. Leth. Geogn. Th. 1. Leth. palseoz. Expl. pi. 19. 

 H. Woodward. Catal. Brit. Foss. Crust, p. 70. 

 Miller. Catal. Palseoz. Foss. America, p. 213. 

 Huxley and Etheridge. Catal. Foss. Mus. Pract. Geol. p. 84. 

 Bigsby. Thes. Devonico-Carbonif. pp. 26, 246 and 247. 

 Young. Proceed. R. Phys. Soc. Edinb. vol. iv. p. 168. 

 Whitfield. Amer. Journ. Sci. ser. 3, vol. xix. p. 35. 

 B. N. Peach. Trans. R. Soc. Edinb. vol. xxx. part i, p. 73. 

 A. S. Packard, jun. Monogr. North Amer. Phyllop. Crust. ; 

 Ann. Rep. U. S. Geol. and Geograph. Survey, p. 450. 



C. E. Beecher. Ceratiocaridag Upper-Devon. Measures ; 



Second Geol. Serv. Penns. P. P. P. p. 2. 



O. Novak. Sitzungsb. k. bohm. Gesellsch. Wissensch. 



LI. W. and T. R. J. Report Brit. Association for 1883, p. 217. 



T. R. J. and H. W. Geol. Mag. Dec. III. Vol. I. p. 396. 



