400 CALIFORNIA ACADEMY OF SCIENCES. 



MESOTHYRA. PAL^OCARIS. 



(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 Rep, Comm. Foss. 



Phyllopoda Pal. Rocks, p. 8. 

 MooREA J. & K., 1867; Annals Mag. Nat. Hist., 4tli 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. Bohfeme, 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 Wal. ; 10th Rep. U. S. Geol. Survey, p. 628, pi. 80, figs. 



4, 4 a, b. Olenellus zone. 

 OcTONARiA Jones, 1887; Annals Mag. Nat. Hist., oth 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. 

 Pal^ocaris M. & VV., 1865; Proc Acad. Nat. Sci. Phila., vol. 17, p. 48. 

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



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



Syn. , Aca7ilhotelson inanquaUs M. & W., 1865; Proc. Acad. Nat. Sci. 

 Phila., vol. 17, p. 48. 

 Acanthotelson inaquaUs M. & \V., 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. 



