50 CALIFORNIA ACADEMY OF SCIENCES. 



Note on two Palaeozoic Crustaceans from Nova 



Scotia. 



In Geol. Mag., decade 2, vol. 4, London, 1877, p. 56. (See also Supple- 

 ment Acadian Geol., 1878, p. 55, tig. 10.) Anthr'acopalcemon (Palceocar- 

 1ni#) hUUanum. Homalonotm dawsoni. 



Description of Pterygotus canadensis n. sp. 



In Canadian Naturalist, new series, vol. 9, 1881, p. 103, fig. 



D'Orbigny (A.) Geologic du voyage dans PAmerique 

 meridonale Palseontologie, Paris, 1842, 22 plates. 



Calymene verneuiU 11. sp., pi. 1, figs. 4-5. 



Day (F. H.) On the fauna of the Niagara and Upper 

 Silurian rocks, as exhibited in Milwaukee county, Wis- 

 consin, and in counties contiguous thereto. 



In Trans. Wisconsin A cad. Sci., vol. 4, 1876-77, p. 113. 



Dekay (J.E.) Observations on the structure of Tril- 

 obites, and description of an apparently new genus, 

 with notes on the geology of Trenton Falls, by James 

 Renwick. Read Nov. 22, 1824. 



In Annals Lyceum Nat. Hist., N. Y., vol. 1, 1824, p. 174, 2 pis.; Isis 

 (oder Encycl. Zeitung), Okeii, 1825 and 1832. 

 Isotdus n. g., /. f/igcifi 11. sp. 



Observations on a fossil crustaceous animal of 



the order Branchiopoda. Read Dec. 12, 1825. 



In Annals Lyceum Nat. Hist., N. Y., vol. 1, pt. 2, p. 375, pi. 29. Re- 

 published in Harlan's Med. Phys. Researches, 1835, p. 297. 

 Eurypterus u. g., E. remipes 11. sp. 



Report 011 several fossil multilocular shells 



from the State of Delaware, with observations on a sec- 

 ond specimen of the new fossil genus Eurypterus. 

 Read Oct. 2, 1827. 



In Annals Lyceum Nat. Hist., N. Y., vol. 2, 1828, p. 273. 

 Eurypterus remipes Dekay. 



Deslongchamps (E.) Memoire sur les corps organises 

 fossiles du gres intermediaire du Calvados. 



In Soc. Linn. Calvados, vol. 2, 1825, p. 291, 2 pis. 



The author herein describes two species of the genus Homalonotus under 

 the names Asaphn* brongniarii and A. brevicaudatus. Asaphus incertus. 



