382 CALIFORNIA ACADEMY OF SCIENCES. 



DIPTEKOCAEIS. DOLICHOPTERUS. 



■ PENN^ DJ5DALI Hall, 1888; Pal. New York, vol. 7, p. 200, pi. 35, fig. 24. 



PENN^-D^DALi Eth., W. & J., 1888; 6th Rep. Comm. Foss. Phyllo- 



pftda Pal. Rocks, p. 9. 



PERCERV^. Clarke, 188.3; Am. Jour. Sci., 3d series, vol. 25, p. 123, figs. 



4, 5. Dansville, N. Y. Chemung. 



PEBCERV.S: J. & VV., 1884; Geol. Mag., decade 3, vol. 1, p. 349. 



PERCERV^ Eth., VV. & J., 1884; 2d Rep. Comm. Foss. Phyllopoda 



Pal. Rocks, p. 11. 



PERCERViE Eth., W. & J., 1885; 3d Rep. Comm. Foss. Phyllopoda 



Pal. Rocks, p. 3. 



PERCERva: Hall, 1888; Pal. New York, vol. 7, p. 202, pi. 35, figs. 20,21. 



PERCERv^ Eth., W. & J., 1888; 6th Rep. Comm. Foss. Phyllopoda 



Pal. Rocks, p. 9. 

 DiPTEROCARis PR(ENE Clarke, 1883; Am. Joi;r. Sci., 3d series, vol. 25, p. 



122, figs. 2, 3. Canadice, N. Y. Portage group and in Chemung 



at Haskinsville, N. Y. 



PRCENE J. & W., 1884; Geol. Mag., decade 3, vol. 1, p. 349. 



PR(ENE Eth., W. & J., 1884; 2d Rep. Comm. Foss. Phyllopoda Pal. 



Rocks, p. 11. 



PRCENE Eth., W. & J., 1885; 3d Rep. Common Foss. Phyllopoda Pal. 



Rocks, p. 3. 



PRCENE Hall, 1888; Pal. New York, vol. 7, p. 201, pi. 35, figs. 25-27. 



PRCENE Eth., W. & J., 18S8; 6th Rep. Comm. Foss. Phyllopoda Pal. 



Rocks, p. 9. 

 DiTHVROCARis (Scoulcr, 1843, MS.) Portl., 1843; Rep. Geol. Londonderry, 



etc., p. 313. 



BELLI H. W., 1870; Geol. Mag., vol. 8, p. 106, pi. 3, figs. Gaspe, 



Canada. Devonian. 

 BELLI Eth., W. & J., 1887; 5th Rep. Comm. Foss. Phyllopoda Pal. 



Rocks, p. 6. 



BELLI Hall, 1888; Pal. New York, vol. 7, p. 194. 



CARBONARiA M. & W., 1870; Proc. Acad. Nat. Sci. Phila., vol. 22, p. 



55. Danville, Illinois. Coal Measures. 

 CARBONARIA M. & W., 1873; Geol. Survey Illinois, vol. 5, p. 618, pi. 



32, fig. 1. 

 CARBONARIA White, 1884; 13th Rep. Dept. Geol. Nat. Hist. Indiana, 



p. 178, pi. 39, fig. 2. 



neptuni Hall. (See Mesothyra neptuni.) 



Dolickocephala Claj'pole, 1883; Proc. Am. Philos. Soc. vol. 21, p. 236. 



locoana, idem; p. 236, plate. (See Stylonurus excelsior.) 



DoLiCHOPTERus (subgenus Eurypterus) Hall, 1859; Pal. New York, vol. 



- 3, p. 414. 



MACROCHEONS Hall, 1859; Pal. New York, vol. 3, p. 414*, pi. 83, fig. 1; 



pi. 83 a, fig. 1. Near Buifalo, N. Y. Waterlime. 



