342 CALIFORNIA ACADEMY OF SCIENCES. 



PKOETUS. 



LONGICA0DU.S Hall, 1876; Illus. Dev. Foss. Crust., pi. 20, figs. 32-34. 



LONGICAUDUS Williams, 1881; Ain. Jour. Sci., 3d series, vol. 21, p. 156. 



? LONGICAUDUS Hall, 1888; Pal. New York, vol. 7, p. 131, pi. 20, figs. 



32-.34. Near Madison, Kansas, NE. of Des Moines, Iowa. 



MACROBius Bill., 1863; Proc. Portland Soc. Nat. Hist., vol. 1, p. 12.3, 



pi. 1, fig. 24. Silurian. 



MACROCEPHALus Hall, 1861; Des. New Species Foss., pp. 77, 79. In 



Hamilton group, Genesco, Moscow, Pavilon, etc., N. Y. 



MACROCEPHALUS Hall, 1862; 15th Rep. New York State Cab. Nat. 



Hist., pp. 105, 107. Also var. a. idem., p. 79, at Moscow and 



Bloonifield, and 18-Mile Creek, N. Y. 

 ma(;rockphai,us Hall, 1876; Illus. Devonian Foss. Crust., pi. 21, figs. 



10-21. 

 MACROCEPHALUS Hall, 1888; Pal. New York, vol. 7, p. 116, pi. 21, figs. 



10-21; pi. 23, fig. 30. 

 Calymene marginalls Con., 1839; Ann. Rep. Pal. Dept. New York 



Geol. Survey, p. 66. In the Tully limestone near Ovid, Seneca 



county, N. Y. 



marginalls Hall, 1861; Des. New Species Foss., p. 76. Hamilton. 



- — MARGiNALis Hall, 1862; loth Rep. New York State Cab. Nat. Hist., 



p. 104. 



MARGINALIS Hall, 1876; Illus. Devonian Foss. Crust., pi. 21, figs. 



24 28. 



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



vol. 8, p. 210. This species is referred to Proetus nevadce by Hall; 

 Palfeont. N. Y., vol. 7, p. 129. 



MARGINALIS Hall, 1888; Pal. New York, vol. 7, p. 122. 



MiCROGEMMA Hall, 1888; Pal. New York, vol. 7, p. 109, pi. 22, figs. 



33, 34. Le Roy, Cauaudaigua, Williamsville, N. Y.; Falls of the 



Ohio. Upper Helderberg. 



Phillipsia MiNUSCULA Hall, 1876; Illus. Devonian Foss. Crust., pi. 20, 



fig. 17. Schoharie, N. Y. Upper Helderberg. 



MiNUTUS Herr., 1889; Bull. Denison Univ., vol. 4, p. 56, pi. 1, figs. 



7 a, b. Kinderhook. 



MINUTUS Herr., 1890; American Geologist, vol. .5^ p. 254. 



MissouRiENSis Shum., 1855; 1st and 2d Rep. Geol. Missouri, p. 196, 



pi. B, figs. 13 a, b. Hannibal, Louisiana and Chouteau Springs, 

 Missouri; also Granville, Ohio. Waverly gi'oup. 

 Syn., auriculaius Hall, 1861; Des. New Species Foss., p. 79. 



aurkulatus Hall, 1862; 15th Rep. New York State Cab. Nat. 



Hist., p. 107. 

 Phillipsia [Proetus] auriculaius Herr., 1889; Bull. Denisou 



Univ., vol. 4, p. 34, pi. 1, fig. 14. 

 Phillipsia shumardi Herr., 1887; Bull. Denison Univ., vol. 2, 

 pp. 58, 69, pi. 7, fig. 14. 



