228 CALIFORNIA ACADEMY OF SCIENCES. 



Arionellus pittitulatus n. sp. Cerdunis rari(s u. sp. Eucrinnrns trenton- 

 cnsis n. sp., E. raricostatits n. sp. Acidaspis parvula n. sp. DaJmanites 

 hitermedias n. sp. Ilkenus indeterminatus n. sp., /. m'dleri Bill. Asaphus 

 homalonotides u. sp. 



The Utica slate and related formations of the 



same geological horizon. 



lu Trans. Albany Inst., vol. 10, 1879, p. 2, pis. 1, 2. 

 Metamorphoses of Triarthrus beckii Green. Tr'mrthrus beckii and Beij- 

 rkhia cincinnatiensis S. A. Miller. 



Description of new species of fossils from the 



Calciferous formation. 



In 32d Kep. New York State Cab. Nat. Hist., 1879, p. 129. Pamphlet 

 published in advance of the rejiort. 



ConocephalHes calciferusw. sjj., C. hartti u. sp. Ptychaspih speciosus n. 

 sp. Bathyurus armatus Bill. 



The Trilobite, new and old evidence relating 



to its organization. 



In Mus. Comp. Zool. Harvard Coll., vol. 8, 1881, p. 191, 6 pis. 

 Cerauriis pileurexanthemus Green. Calyniene sejiar?« Conrad. A.snphus 

 platycephalus Stokes. Eurypterus reinipes Dekay. 



Description of a new genus of the order 



Eurypterus from the Utica slate. 



In Am. Jour. Sci., 3d series, vol.23, 1882, p. 213, figures. 

 Echi7io<j)icUhus n. g., E. Cleveland} n. sp. 



Description of new species of fossils from the 



Trenton group, New York. 



In 35th Rep. New York State Cab. Nat. Hist., 1883, p. 206, 1 pi. 



Aiithor's edition, October 15, 1883, 8 pp., 1 pi. 



Beyrichia bella n. sji. Leperdllia (hoch'dbin) armata n. sp. 



Injury sustained by the eye of a Trilobite at 



the time of moulting of the shell. 



In Annals Nat. Hist., 5th series, vol. 13, London, 1884, p. 69. 



On the locomotory appendages of Trilobites. 



In Science, vol. 3, 1884, p. 279, 3 figs. 



Asaphus megisios Locke. Calyniene senaria Conrad. 



Palaeontology of the Eureka district. 



In Mon. U. S. Geol. Survey, vol. 8, 1884, 24 pis. 



Cambrian: Agnostus bidens Meek, A. communis H. & W., A. neon H. & 



