372 CALIFORNIA ACADEMY OF SCIENCES. 



BEYKICH1A. 



ATLANTICA Bill., 1865; Pal. Foss., vol. 1, p. 300. Table Head, N. F. 



BELLA Wai., 1883; Description New Species Trenton Group, p. 7, pi. 



17, figs. 11, 11 a. Trenton Falls, N. Y. Trenton. 



- BELLA Wai., 1884; 35th Kep. New York State Mus. Nat. Hist., p. 213 



pi. 17, tigs. 11, 11 a. 



BUCHIANA? Jones, 1890; Quart. Jour. Geol. Soc., vol. 46, p. 16, pi. 3, 



fig. 25. Cincinnati, Ohio. Cambrian. 



CHAMBERSI Miller, 1874; Cincinnati Quart. Jour. Sci., vol. 1, p. 234, 



fig. 27. Cincinnati, Ohio. Hudson. 



- CHAMBERSI H. & W., 1875; Pal. Ohio, vol. 2, p. 104, pi. 4, figs. 11, 12. 



CILIATA Emmons, 1855; American Geology, pt. 2, p. 219, fig. 74 c. 



Cincinnati, Ohio. Hudson. 



CILIATA Miller, 1875; Cincinnati Quart. Jour. Sci., vol. 2, p. 351. 



CILIATA Jones, 1890; Quart. Jour. Geol. Soc., vol. 46, p. 19, pi. 3, 



figs. 12-16; pi. 4, figs. 16-18. 



Syn., Beyrichia tumifrons Hall. This species is used by Ulrich for 

 the type of his new genus Ctenobolbina. 



CINCINNATIENSIS Miller, 1875; Cincinnati Quart. Jour. Sci., vol. 2, p. 



350, fig. 25. Weisburg, Ohio. Hudson. 



CINCINNATIENSIS Wai., 1876; Trans. Albany Inst., vol. 10, p. 23. 



CLARKEI Jones, 1890; Quart. Jour. Geol. Soc., vol. 46, p. 17, wood- 



cut, fig. 2. Herkimer Co., N. Y. Lower Helderberg. 



CLATHRATA Jones, 1858; Annals Mag. Hist., London, 3d series, vol. 



1, p. 242, pi. 9, fig. 1. Niagara. 



CLAVIGERA Jones, 1891; Contrib. Micro-Paleeont, pt. 3, p 65, pi. 11, 



fig. 7, Quebec City; var. clavifracta, Quebec City, pi. 11, fig. 8. 



- DAGON Clarke,. 1885; Bull. U. S. Geol. Survey, No. 16, p. 29, pi. 2, figs. 



6, 7. Bristol Center, N. Y. Genesee. 



- DECORA Bill., 1866; Catalogue Sil. Foss. Anticosti, p. 67. 



DIFFUSA Jones, 1890; Quart. Jour. Geol. Soc. London, vol. 46, p. 



546, pi. 21, fig. 7. Jupiter Kiver, Anticosti. Silurian. 



DURYI Miller, 1874; Cincinnati Quart. Jour. Sci., vol. 1, p. 232, figs. 



24, 25. Cincinnati, Ohio. Hudson. 



- FOZTOIDEA White and St. John, 1868; Trans. Chicago Acad. Sci., vol. 



1, p. 126, figs. 11 a, b. Union and Page Co., Iowa. Niagara. 



GRANULOSA Hall, 1876; 28th Eep. New York State Mus. Nat. Hist., 



Doc. Ed. Expl., pi. 32, fig. 4. Waldron, Decatur Co., Indiana. 



Niagara. 



- GRANULOSA Hall, 1876; 28th Eep. New York State Mus. Nat. Hist., 



p. 186, pi. 32, fig. 4. 



GRANULOSA Hall, 1883; llth Annual Kept. Dept. Geol. Nat. Hist. 



Indiana, p. 331, pi. 34, fig. 4. 



GRANULOSA Jones, 1890; Quart. Jour. Geol. Soc., vol. 46, p. 15, pi. 



1, fig. 3. Schoharie county, N. Y. 



