68 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



ARIONELLUS Continued. 



Zittel, Handb. Pal., 2, 1885, p. 601. Koken, Die Leitfossilien, Leipzig, 1896, 

 p. 21, fig. 13, figs. 5, 6 Lindstrom, Kongl. Sven. Vet.-Akad. Handl., 34, 

 No. 8, 1901, pp. 22, 25. 



Arionellus? cylindricus Billings. 



Arionellus cylindricus Billings, Canadian Nat. Geol., 5, 1860, p. 314, fig. 14; 



Geol. Canada, Geol. Surv. Canada, 1863, p. 237, fig. 264; Pal. Foss., 1, Geol. 



Surv. Canada, 1865, p. 406, fig. 385. 



Ptychaspis cylindricus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 198. 

 Agraulos cylindricus Miller, N. A. Geol. Pal., 1889, p. 527, fig. 955. 

 OzarHan? ( Le vis-erratic) : Point Levis, Quebec. 



ARIONELLUS OWENI Meek and Hayden. See Ptychoparia oweni. 

 ARIONELLUS PUSTULATUS Walcott. See Glaphurus pustulatus. 



Arionellus? subclavatus Billings. 



Arionellus subclavatus Billings, Canadian Nat. Geol., 5, p. 315, fig. 15; Geol. 

 Canada, Geol. Surv. Canada, 1863, p. 237, fig. 265a, b; Pal. Foss., 1, Geol. 

 Surv. Canada, 1865, p. 406, fig. 386a. 



Ptychaspis subclavatus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 198. 

 Ozarkian? ( Le vis-erratic) : Point Levis, Quebec. 



ARISTERELLA Ulrich. Genotype: A. nitidula Ulrich. 



Aristerella, Ulrich Geol. Minnesota, 3, pt. 2, 1894, p. 524. Miller, N. A. Geol. 

 Pal., 2d App., 1897, p. 779. Grabau and Shimer, N. A. Index Fossils, 1, 

 1909, p. 518. 



Aristerella nitidula Ulrich. 



Aristerella nitidula Ulrich Geol. Minnesota, 3, pt. 2, 1894, p. 524, pi. 35, figs. 

 30-39. Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 518, fig. 696c, d, e. 

 Black River: Chatfield, Minnesota (Decorah); Lincoln County, Missouri (Auburn). 

 Cotypes Cat. No. 46092, 46093, U.S.N.M. 



Aristophycus Miller and Dyer. Genotype: A. ramosum Miller and Dyer. 



Aristophycus Miller and Dyer, Contr. to Pal. No. 2, 1878, p. 3. James, J. F., Jour. 

 Cincinnati Soc. Nat. Hist., 7, 1884, p. 130 Miller, N. A. Geol. Pal., 1889, 

 p. 107. 



Observation. Genus and species abandoned by author in 1889, as probably 

 inorganic and, if fucoidal, too irregular and too little known to be retained. 



Aristophycus ramosum Miller and Dyer. 



Aristophycus ramosum Miller and Dyer, Contr. to Pal., No. 2, 1878, p. 4, pi. 4, 



fig. 2. James, Jour. Cincinnati Soc. Nat. Hist., 7, 1884, p. 130, pi. 6, fig. 2; 



14, 1891, p. 46 Miller, N. A. Geol. Pal., 1, 1889, p. 107. 

 Maysville: Cincinnati, Ohio. 



Aristophycus ramosum germanum Miller and Dyer. 



Aristophycus ramosum var. germanum Miller and Dyer, Contr. to Pal., No. 2, 



1878, p. 4, pi. 4, fig. 3 Miller, N. A. Geol. Pal., 1889, p. 130. James, Jour. 



Cincinnati Soc. Nat. Hist., 1891, 14, p. 46. 

 Maysville: Cincinnati, Ohio. 



ARISTOZOE Barrande. Genotype: A. bisulcata Barrande. 



Aristozoe Barrande, Syst. Sil. Boheme, Sup. 1, 1872, p. 474. Canu, Ann. Soc. 



geol. du Nord, 12, 1885, p. 145. Jones Rep. 53d Meeting Brit. Assoc. Adv. 



Sci., 1884, p. 217; 55th Meeting, 1886, p. 358. Zittel, Handb. d. Pal., 2, 



