OO CALIFORNIA ACADEMY OF SCIENCES. 



Description of a new species of Stylonurus 



from the Catskill group. 



In Thirty-sixth Eept. New York State Mus. Nat. Hist., 1884, p. 76, pi. 5. 



Stylonurus excelsior Hall. 



There was a short notice of this species published by D. S. Martin 

 (Trans. New York Acad. Sci., vol. 2, 1882, p. 8). This notice was based 

 iipon a cast of the carapace in the New Y'ork State Museum, which had 

 been labeled with name and locality by Prof. James Hall. 



and Whitfield (R. P.) Descriptions of new 



species of fossils from the vicinity of Louisville, Ky., 

 and the Falls of the Ohio. 



In Twenty-fourth Eept. New York State Mus. Nat. Hist., 1872, p. 181, 

 pi. 13, figs. 20 and 21. 



Jllcenus cornigerus H. & W. 



Geological Survey of Ohio. Vol. 2. Geology 



and pala3ontology. Pt. 2. Pala3ontology. 1875, p. 67, 

 pis. 1-12. 



Leperditia ( Isochilina) cylindrica Hall, L. (Isochillna) minutimima Hall. 

 Beyrichia tumifrons Hall, B. oculi/era Hall, B. chambersi Miller, B. quad- 

 riliraia n. sp. Plumulites jamesi u. sp. Calymene christyi Hall. Dal- 

 mania hreviceps Hall. Proetus parvisculus Hall. Calymene niaqai-e.nsiH 

 Hall. Encrinurus ornatus n. sp. Lichas hreviceps Hall. 



Palaeontology. 



In U. S. Geol. Expl. 40th Parallel, vol. 4, pt. 2, 1877, 7 pis. 



Crepicephalus (Loganellus) haguei n. sp., C (L.) nitidus n. sp., C. (L.) 

 granulosus n. sp., C. (L.) unisulcatus n. sp., C. (L.) simulator n. sp., C. 

 (L.) anytus n. sp., C. ( Bathyurus ?) angulatus n. sp. Pterocevhalus : 

 Conocephalites ( Pterocephalus) laticeps n. sp. Ptychasjiis pusulosa n. sp. 

 C hariocephalus tumifrons n. s'p. Dikellocephalus bilobafus n. sp., D.Jla- 

 bellifer n. sp. Agnostus communis n. sp., .4. neon n. sp., A. prolongus n. 

 sp., A. tumidosus n. sp. Conocephalus subcoronatus n.sp. Crepicephalus ? 

 ( Loganellus) quadrans n. sp. Dikellocephalus quadriceps n. sp., D. wah- 

 satchensis n. sp., D. 'i gothicusn. sp. Bathyurus pogonipensis n. sp. Ogy- 

 (jia producta n. sp., 0. parabola n. sp. Proetus peroccidens n. sp., B. lo- 

 ganensis n. sp. Crep. ( L.) maculoius n. sp. Dikellocephalus multicinclus 

 n. sp. 



assisted by Clarke (John M.) Geological Sur- 

 vey of the State of New York. Palteontology. Vol. 

 VII. Text and plates, containing descriptions of the 

 Trilobites aird oti^er Crustacea of the Oriskany, Upper 



