BIBLIOGRAPHY OF PALEOZOIC CRUSTACEA. 171 



pi. 2a, tig. S. 18, Asaphm gigas. 19, A. u. sp. 20, A. iotvensis, pi. 2a, 

 tigs. 1-7. 21, Illanus crassicauda \Vahl. 22, /. sp. undet. 23, /. ovalis 

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

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

 30, Lichas sp.? 31-32, Cytherina sp. undet. 33, Bumastus barrienais 

 Murch. 



Owen (Richard). Description of the impressions and 

 foot-prints of the Protichnites from the Potsdam sand- 

 stone of Canada. 



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



Palaeontology, or a systematic summary of 



extinct animals and their geological relation. Edin- 

 burgh, 1861. 



Class 3. Crustacea, pp. 45-51. 



The author illustrates Leperditia baltica, Entomoconchus scouleri, Bey- 

 richia complicate^ Dithyrocaris scouleri, Pterygotus anglicus, Belinurus 

 bellulus, Illcenus davisii, Phacops caudata, Calymene blumenbachii, Trinu- 

 cleus ornata, Agnostus trinodus. 



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



Asmusia membranacea n. sp. 



Geognostische Untersuchungen zwischen Orel 



Woronasch und Simbirsk in Jahre, 1853. 



In Beitrage zur Kenntniss des russischen Reiches und der angranzen- 

 d en Lander Asiens, St. Petersburg, 1858. 



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

 polyphemus. 



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 punctatus Hall, E. multinodosus Whitf., 

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

 Hall. Estheria ovata Jones. Leaia leidyi Jones. Esthcria dawsoni Pack. 



