BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 99 



AVICULA SUBRETROFLEXA D'Orbigny. See Pterinea demissa. 

 AVICULA HUBRUGOSA D'Orbigny. See Pterinea subrugosa. 

 AVICULA TENUILAMELLATA Hall. See Aviculopecten tenuilamellatus. 

 AVICULA TRENTONENSIS Conrad. See Prolobella trentonensis. 



A vie 11 1 a triquetra Hall. 



Avicula triquetra Hall, Nat. Hist. New York, Geol., 4, 1843, p. 137, fig. 7. 

 Niagaran (Guelph): Newark, Wayne County, New York. 



AVICULA UNDATA Hall. See Pterinea undata. 



Avicula? undosa Ringueberg. 



Avicula undosa Ringueberg, Bull. Buffalo Soc. Nat. Hist., 5, 1886, p. 18, pi. 2, 



fig. 9. 

 Clinton (Rochester): Lockport, New York. 



Avicula welchi James. Not recognized. 



Avicula welchi James, Cincinnati Quart. Jour. Sci., 1, 1874, p. 239. 

 Richmond: Clinton County, Ohio. 



AVICULA WHITFIELDI Foerste. See Cyrtodonta? ferruginea. 



AVICULOPECTEN McCoy. Genotype: A. planoradiatus McCoy. 



Aviculopecten McCoy, Ann. Mag. Nat. Hist., 2d ser., 7, 1851, p. 171, fig; Contr. 

 British Pal., 1854, p. 203, fig.; British Pal. Rocks and Foss., 1854, p. 392. 

 Meek, Amer. Jour. Sci. and Arts, 2d ser., 37, 1864, p. 217. Meek and Hay- 

 den, Pal. Up. Missouri, Smiths. Cont. Knowl., 172, 14, 1865, p. 49. Meek, 

 Amer. Jour. Sci. and Arts, 2d ser., 44, 1867, p. 175; 44, 1868, p. 64. Zittel, 

 Handb. Pal., 2, Munich, 1881, p. 30. Waagen, Mem. Geol. Surv. India, Pal. 

 Indica, 13th ser., 1, 1881, p. 300. Barrande, Syst. Sil. du Centre Boheme, 6, 

 1881, p. 22; Acephales Ext. Syst. Sil. du Centre Boheme, 1881, p. 34. Hall, 

 Pal. New York, 5, pt. 1, Lam. (adv. copy), 1883, p. 3; 4th Rep. State Geol. 

 New York, 1885, p. 47, figs. 1, 2; 1st Rep. State Geol. New York, 1884, p. 12; 

 Pal. New York, 5, pt. 1, Lam. 1, 1884, p. xii; 35th Rep. New York State Mus., 

 1884, p. 406b. Miller. N. A. Geol. Pal., 1889, p. 465. Koken, Die Leitfos- 

 silien, Leipzig, 1896, p. 185. Grabau, Bull. Buffalo Soc. Nat. Sci., 6, 1899, 

 p. 240. Girty, Amer. Geol., 33, 1904, pp. 291, 292, fig.; 34, 1904, p. 332. 

 Hind, ibid., 34, p. 200. Dall, Zittel-Eastman Textb. Pal., 2d ed., 1913, 

 p. 457. 



AVICULOPECTEN SUBRECTUS Miller. See Pterinea subrecta. 



Aviculopecten tenuilamellatus (Hall). 



Avicula tenuilamellata Hall, Pal. New York, 3, 1859, p. 281, pi. 51, figs. 1 and 2. 

 Aviculopecten tenuilamellatus May nard, Maryland Geol. Surv., Low. Dev., 1913, 



p. 461, pi. 78, fig. 4. 



Helderbergian: Albany and Schoharie Counties, New York (New Scotland); 

 Keyser, West Virginia (Keyser). 



AZYGOGRAPTUS Nicholson. Genotype: A. lapworthi Nicholson. 



Azygograptus Nicholson. Ann. Mag. Nat. Hist., 4th ser, 16, 1875, p. 269. Wiman, 

 Bull. Geol. Inst. Univ. Upsala, 2, pt. 2, No. 4, 1896, p. 266; Nat. Sci., 9, 1896, 

 p. 188. Elles, Quart. Jour. Geol. Soc. London, 54, 1898, p. 513. Elles and 

 Wood, Mon. British Grapt. Pal. Soc., 1902, p. 92. Ruedemann, Mem. New 

 York State Mus., 11, pt. 2, 1908, pp. 256-257. 



