548 CALIFORNIA ACADEMY OF SCIENCES. 



PTYCHOPARIA. 



Crepicephalus (Bathijuriis) angulatus H. & W., 1877; U. S. Geol. 

 Expl. 40tli Par., Palasont., vol. 4, p. 220, pi. 2, fig.- 28. Potsdam 

 group of Pogonip Mt., White Piue, Nev. 



? ANGULATUS Wal.. 1884; Pal. Eureka' Dist., Mon. U. S. Geol. Survey, 



vol. 8, p. 269. 



? ANNECTANS Wal., 1884; Pal. Eureka Dist., Mon. U. S. Geol. Survey, 



vol. 8, p. 91, pi. 12, fig. 18. ■Hamburg Ridge, Nev. Cambrian. 



Conoceph. antiquatus Salt., 1859; Quart. Jour. Geol. Soc. London, 



vol. 15, p. 554, fig. 2. Georgia, Vermont. Taconic. 



Conoceph. anatinus Hall, 186.3; 16th Rep. New York State Cab. Nat. 



Hist., p. 158, pi. 7, figs. .34, 35, and pi. 8, fig. 29. Lake Pepin, also 



Tremapleau, Wis. Potsdam. 



Crepicephalus (LoganeUus) anytus H. & W., 1877; U. S. Geol. Expl., 



40th Par., vol. 4, p. 219, pi. 2, figs. 19-21. 



ANYTtrs Wal., 1884; Pal. Eureka Dist., Mon. U. S. Geol. Survey, vol. 



8, p. 56, pi. 9, fig. 26. Schell Creek, Nev. Taconic. 



Lisostracus anytus Briigg., 1886; Geol. Foren. Stock. Forhandl., vol. 

 8, p. 212. 



attleborensis, Shaler & Foerste, 1888; Bull. Mus. Comp. Zool. 



Harvard College, vol. 19, p. 39, pi. 2, fig. 14. Attleborough, Mass. 



attleborexsis Wal., 1890; 10th Rep. U. S. Geol. Survey, p. 649, pi. 



95, fig. 2. Olenellus zone. 

 Conoceph. aurora Hartt, 1868; Acadian Geology, p. 653. (See Plycho- 



paria ouangondianus.) 



Conoceph. billingsi Shum., 1861; Am. Jour. Sci., 2d series, vol. .32, 



p. 220. Morgan Creek, Biirnet Co., Texas. Taconic. 



Conoceph.? binodosus Hall, 1863; 16th Rep. New York State Cab. Nat. 



Hist., p. 160, pi. 7, fig. 47. Osceola Mills, Wis. Potsdam. 



Solenopleura? breviceps Wal., 1884; Pal. Eureka Dist., Mon. U. S. 



Geol. Survey, vol. 8, p. 49, pi. 10, fig. 9. Prospect Mt. group in 

 the Hamburg shale north of Adams Hill, Nev. Taconic. 



BURNETENSis Wal., 1880; Proc. U. S. Nat. Mus., vol. 13, p. 272, pi. 



21, fig. 1. Tatur Hill, Burnet Co., Texas. Taconic. 



Conocephalites calymenoides Whitf., 1878; Ann. Rep. Geol. Survey 



Wisconsin, 1877, p. 52. Eau Claire, Wis. Taconic. 



Conocephalites calymenoides Whitf., 1882; Geol. Wisconsin, vol. 4, 

 p. 179, pi. .3, figs. 2-5. 



calymenoides Wal., 1884; Pal. Eureka Dist., Mon. U. S. Geol. Survey, 



vol. 8, p. 48. 

 Crepicephalus [Loganellus) centralis Whitf., 1880; Geol. Resources 

 Black Hills Dakota, p. 341, pi. 2, figs. 21-24. Castle Creek, Black 

 Hills, Dakota. Taconic. 



? (subgenus?) clavata Wal., 1887; Am. Jour. Sci., 3d series, vol. 34, 



p. 198, pi. 1, fig. 3. 1^ miles south of North Granville, etc., 

 Washington Co., N. X.- (See Protypus clavata.) Taconic. 



