402 CALIFORNIA ACADEMY OF SCIENCES. 



PBIMITIA J. & H., 1865; Annals Mag. Nat. Hist., 3d series, London, vol. 

 16, p. 415. 



ACADICA Matt., 1885; Trans. Eoy. Soc. Canada, vol. 3, p. 66, pi. 6, 



figs. 2, 2 a-b. Div. 1, c, at Porter's Brook, St. Martin's, N. B. 

 Paradoxides zone. 



BILLINGSI Jones, 1890; Quart. Jour. Geol. Soc., vol. 46, p. 547, p. 21, 



fig. 10. West of Jupiter Kiver, Anticosti. Clinton or Niagara. 



- CLARKEI Jones, 1890; Quart. Jour. Geol. Soc., vol. 46, p. 535, pi. 20, 



fig. 11. Ontario Co., N. Y. Devonian. 



CENTRALIS Ulrich, 1890; Jour. Cincinnati Soc. Nat. Hist., vol. 13, p. 



130, pi. 10, figs. 2 a-b. Cincinnati, Ohio. Utica. 



CHESTERENSIS Ulrich, 1890; Jour. Cincinnati Soc. Nat. Hist., vol. 13, 



p. 201, pi. 14, figs. 7 a-c; also var. caldwallensis, pi. 14, figs. 7 

 a-c. Chester. 



CINCINNATIENSIS (Miller) Ulrich, 1890; idem, p. 132, pi. 10, figs. 6 a-c. 



Weisburg and Clarkville, Ohio. Upper half of Cincinnati group. 



- cristata Whitf., 1889; Bull. Am. Mus. Nat. Hist., New York, vol. 2, 



p. 59, pi. 13, figs. 1, 2. (See Isochilina cristata.) 



GLABRA Ulrich; Jour. Cincinnati Soc. Nat. Hist., vol. 13, p. 134, pi, 



10, figs, 9 a-c. Oxford and Blanchester, Ohio. Cambrian. 



GRANIMARGINATA Ulrich, 1890; idem., p. 201, pi. 12, figs. 8 a-b. 



Grayson Springs Station, Ky. Chester. 



gregaria Whitf., 1889; Bull. Am. Mus. Nat. Hist., New York, vol. 2, 



p. 58, pi. 13, figs. 3-5. (See Isochilina gregaria.) 

 ~ IMPRESSA Ulrich, 1890; Jour. Cincinnati Soc. Nat. Hist., vol. 13, p. 



131, pi. 10, figs. 3 a-c and 4 a-c. Savannah, Illinois. Cambrian. 



- LATIVIA Ulrich, 1889; Contrib. Micro-Palseont., pt. 2, p. 50, pi. 9, 



figs. 8, 8 a. Stony Mountain, Manitoba. Hudson. 



Beyrichia logani var. leper ditioides Jones, 1858; Annals and Mag. 



Nat. Hist., London, 3d series, vol. 1, p. 244, pi. 9, fig. 10. 



Trenton. 

 Beyrichia logani var. leperditioides Jones, 1858; Geol. Survey Canada, 



decade 3, p. 91, pi. 11, figs. 1-5. 



LEPERDITIOIDES Jones, 1884; Annals and Mag. Nat. Hist., 6th series, 



London, vol. 14, p. 345. 



LOGANI Jones, 1891; Contrib. Micro-Palseont., pt. 3, p. 63, pi. Quebec 



City. Chazy. 



- MEDALIS Ulrich, 1890; Jour. Cincinnati Soo. Nat. Hist., vol. 13, p. 



132, pi. 10, figs. 7 a, 7 b. Jefferson Co., Ky. Cambrian. 



MILLERI Ulrich, 1890; Jour. Cincinnati Soc. Nat. Hist., vol. 13, p. 



133, pi. 12, figs. 2, 2 a-c. Clarksville and Blanchester. Ohio. 



Cambrian. 



MUNDULA Jones, 1891; Contrib. Micro-Pala3ont., pt. 3, p. 64, var. 



effbssa. Quebec City. Also var. incisa. For other references, 

 see Beyrichia mundula. Lorette Falls, Quebec. 



