400 CALIFORNIA ACADEMY OF SCIENCES. 



MESOTHYKA. PAL.EOCAKIS. 



(Dithyrocaris?) VENERIS Hall, 1888; Pal. New York, vol. 7, p. 193, pi 



33, fig. 3. East Bloomfield, Ontario Co., N. Y. Hamilton. 



Dithyrocaris? VENERIS Eth., W. & J., 1888; 6th Hep, Comm. Foss. 



Phyllopoda Pal. Eocks, p. 8. 

 MOOREA J. & K., 1867; Annals Mag. Nat. Hist., 4th series, vol. 3, p. 225. 



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



191, pi. 16, figs. 4, 4 a-c. 18-Mile Creek, N. Y. Hamilton. 



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



206, pi. 12, figs. 9, 9 a, b. Grayson Springs, Ky. Chester, 



- KIRKBYI Jones, 1890; Quart Jour. Geol. Soc., vol. 46, p. 542, pi. 20, 



figs. 9, a, b; also figs. 10, a, b. Ontario Co., N. Y. Coniferous. 

 NEOLIMULUS H. W., 1868; Geol. Mag., vol. 5, p. 1. 

 NOTHOZOE Bar., 1872; Syst. Sil. Boheme, vol. 1, suppl., p. 536. 



- VERMONTANA Whitf., 1884; Bull. Am. Mus. Nat. Hist., vol. 1, p. 144, 



pi. 14, figs. 14, 15. Dunmore, near Middlebury, Vt. Taconic. 



- VERMONTANA Wai.; 10th Kep. U. S. Geol. Survey, p. 628, pi. 80, figs. 



4, 4 a, b. Olenellus zone. 

 OCTONARIA Jones, 1887; Annals Mag. Nat. Hist., 5th series, vol. 19, p. 404. 



CLAVIGERA Ulrich; Jour. Cincinnati Soc. Nat. Hist., vol. 13, p. 195, 



pi. 16, figs. 7, 7 a, c. Falls of the Ohio. Devonian. 



CURTA Ulrich, Jour. Cincinnati Soc. Nat. Hist., vol. 13, p. 195, pi. 12, 



figs. 4, 4 a, b. Lockport, N. N. Niagara. 



LINNARSSONI Jones, 1890; Quart. Jour. Geol. Soc., vol.46, p. 541, pi. 



20, figs. 7, a, b. Clarke Co., Indiana. Hamilton. 



OVATA Ulrich, 1890; Jour. Cincinnati Soc. Nat. Hist., vol. 13, p. 194, 



pi. 16, figs. 6, 6 a, b. Falls of the Ohio. Devonian. 



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



193, pi. 16, figs. 8, 8 a, b; also, var. oblonga, p. 194, p. 16, figs. 9, 

 9 a, c, and var. loculosa, pi. 16, fig. 10. Falls of the Ohio. 



Denovian. 



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

 197. 



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



198, pi. 13, figs. 5, 5 a, c. Falls of the Ohio. Denovian. 



PAL2EOCARIS M. & W., 1865; Proc. Acad. Nat. Sci. Phila., vol. 17, p. 48. 



TYPUS M. & W., 1865; Proc. Acad. Nat. Sci. Phila., vol. 17, p. 49. 



Mazon Creek, Grundy Co., Illinois. Coal Measures. 



Syn., Acanthotelson incequalis M. & W., 1865; Proc. Acad. Nat. Sci. 



Phila., vol. 17, p. 48. 



Acanthotelson incequalis M. & W., 1866; Geol. Illinois, vol. 2, 

 p. 403, pi, 32, fig. 7, 7 a. 



- TYPUS M. & W., 1866; Geol. Illinois, vol. 2, p. 405, pi. 32, figs. 5 a-d. 

 TYPUS M. & W., 1868; Geol. Illinois, vol. 3, p. 552, figs, a, b. 



