BIBLIOGRAPHY OF PAL.EOZOIC CRUSTACEA. 171 



pi. 2a, tig. S. 18, Asaphu.s gigufi. 19, A. u. sp. '20, A. iowensis, pi. 2a, 

 figs. 1-7. 21, lUnnus crnssicnuda Wahl. 22, /. sp. nndet. 23, /. oralis 

 n. sp. 24, /. n. sp., pi. 2a, fig. 10. 25, Ceraurus pleurexanthemuH Green 

 26, Phacops macrophfhalma Brong. 27-28, P. n. sp. 29, P. callicephalus. 

 30, Lichas sp. ? 31-32, Cylherina sp. tmdet. 33, Bttmastus harricnsis 

 Mnrch. 



Owen (Richard). Description of the impressions and 

 foot-prints of the Protlchnites from the Potsdam sand- 

 stone of Canada. . 



In Quart. Jour. Geol. Soc. Loudon, vol. 8, 1852, p. 214, pis. 9-14a. 



Pakeontology, or a systematic summary of 



extinct animals and their geological relation. Edin- 

 burgh, 1861. 



Class 3. Criistacea, pp. 45-51. 



The author illustrates Leperditia haltica, Entomoconchus scouleri, Bey- 

 rhhia (omplicata, Dithyrocaris scouleri, Pterygotus anglicun, Belinurus 

 bellulus, Illitnus davisii, Phacops cauclata, Calymene blumenhachii, Tri nu- 

 cleus ornata, Agnontus trinodus. 



Pacht (R.) Der Devonische kalk in Livland, 1849. 



Asmitsia membranacea u. sp. 



Geognostische Untersuchungen zwischen Orel 



Woronasch und Simbirsk in Jahre, 1853. 



In Beitriige zur Keuutuiss des russischeu Belches und der angrauzen- 

 den Lander Asiens, St. Petersburg, 1858. 



Packard (A. S., Jr.) On the embryology of Limulas 

 ■polypheraus. 



In Proc. Am. Assoc. Adv. Sci., 1870, 19th Meeting, p. 247. 

 Notes on the larva of Trilobites, etc. 



The structure of the eye of Trilobites. 



In Am. Naturalist, vol. 14, 1880, p. 503. 



A monograph on the Phyllopod Crustacea of 



North America, with remarks on the order Phyllocarida. 



In Twelfth Rep. U. S. Geol. Survey Territories (Hayden), Washington, 

 1883, pt. 1, p. 295, pis. 1-38. 



The author illustrates Echinocaris piinctatus Hall, E. multinodosus Whitf., 

 E. sublevis Whitf. Discinocaris browniana H. W. Dithyrocaris neptuni 

 Hall. Estheria ovata Soiie^. Leaia leidyi Jones. Esthria dmcsoni V&ck. 



