342 CALIFORNIA ACADEMY OF SCIENCES. 



PEOETUS. 



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



LONGICAUDUS Williams, 1881; Am. 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. 123, 



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 Kep. New York State Cab. Nat. 



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

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



- MACROCEPHALUS 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 MARGINALIS Con., 1839; Ann. Eep. Pal. Dept. New York 

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

 county, N. Y. 



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



- MARGINALIS Hall, 1862; 15th Kep. New York State Cab. Nat. Hist., 



p. 104. 



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



24 28. 



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



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

 Palseont. 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 Koy, Canandaigua, 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. Kmderhook. 



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. Waveiiy group. 

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



auriculatus Hall, 1862; 15th Kep. New York State Cab. Nat. 



Hist., p. 107. 

 Phillipsia (Proetus) auriculatus Herr., 1889; Bull. Denison 



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



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

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



