96 SAN DIEGO SOCIETY OF NATURAL HISTORY 
RITTER (R.)—Continued 
P. liopygus n. sp. Acidaspis myops n. sp. Beyrichia (Leperditia) armata n. sp., B. 
Kloedni McCoy, B. subcylindrica nov. 
Corrections for reference on page 184, Bibliography Palwozoic Crustacea. 
—— Der Kulm in Thuringen. 
Zeitsch. Deutsch. Geol. Ges., 1864, p. 155. 
Proetus posthumus n. sp. Cythere spinosa n. sp. 
Untersilurische Petrefakten aus Thuringen. 
Zeitsch. Deutsch. Geol. Ges., 1872, p. 72. 
Calymmene sp. Asaphus marginatus n. sp. Beyrichia excavata n. sp. 
Roberts (George L.) On some Crustacean Tracks from the Old Red 
Sandstone near Ludlow. 
- Quart. Jour. Geol. Soc., vol. 19, 1863, pp. 233-235. 
and Randall (John). On the Upper Silurian Passage beds at 
Linley, Salop. 
Quart. Jour. Geol. Soc., vol. 19, 1863, pp. 229-232. 
Roemer (F'.) Geoghostische Beobachtungen im polnischen Mettlelge- 
birge. 
Zeitschr. d. Deutsch Geol. Ges., Bd. xviii, 1866. 
Phacops cryptophthalmus Emm. Roemer’s pl. xiii, figs. 6-7, has been described by Prof. 
Frech as Phacops (Trimerocephalus) anophthalmus n. sp. Lethaea Paleozoica, Bd. 2, pp. 
124, 178, 179, 180. 
EBurypterus lacustris von Buffalo, New York. 
55 Jahrester der schles Ges., 1877. 
Rogers (Austin F.) Some new American species of Cycles from the 
Coal Measures. 
Contributions Geol. Dept. Columbia Univ., No. 88, vol. X, 1902. 
Kansas Univ. Bull., vol. 1, 1902, pp. 269-275, plate 14. 
Cyclus communis n. sp. C. Packardi n. sp., C. permarginatus n. sp., C. limbatus n. 
sp., C. minutus n. sp. 
Rouault (Marie). Notice sur quelques especies de fossiles du Terrain 
Devonien du nord du Dept. de la Manche. 
Bull. Soc. Geol. France, vol. 12, 1855, p. 1040. 
Homalonotus Forbesi n. sp. 
Add to the reference on p. 190, Bib) Pal. Crust., under Mem. Paleozoques des en- 
virons de Renness, 1851, the following species: Cyphaspis Gaultieri n. sp. Phacops 
Michelini n. sp. and Beyrichia Hardouinina n. sp. 
Rowley (R. R.) Descriptions of Fossils. 
Contributions to Indiana Paleontology, Green, New Albany, vol. 2, part 2, pp. 21-31, 
plate, 1906. 
Gives systematic descriptions of various species of Trilobites and Crinoids. 
— The Geology of Pike County. 
Missouri Bureau of Geol. and Mines, vol. 8, 2nd series, 1907, 122 pp., 20 plates and 
map. 
