BIBLIOGRAPHIC LIST OF GENEEA AND SPECIES. 31 



Ambonychia orbicularis — Continued. 



Posidonomya orbicularis Emmons, Amer. Geol., 1, pt. 2, 1855, p. 176, pi. 13, 



figs. 18, 19. 

 Ambonychia orbicularis Hall, Pal. New York, 1, 1847, p. 164, pi. 36, figs. 5a-d. — 



Emmons, Man. Geol., 1860, p. 99, fig. 88. — Lesley, Geol. Surv. Pennsylvania, 



Rep. P 4, 1889, p. 22, fig. 

 Trenton: Watertown and Middleville, New York. 



Ambonychia perangulata Miller. See Psilonychia perangulata. 



Ambonychia planistriata Hall. 



Ambonychia planistriata Hall, Rep. Geol. Surv. Wisconsin, 1861, p. 32. — Ulrich 



Geol. Minnesota, 3, pt. 2, 1894, p. 491, pi. 35, figs. 3 and 4.— Wliitfield, Mem. 



Amer. Mus. Nat. Hist., 1, pt. 2, 1895, p. 58, pi. 7, figs. 3, 4. 

 Black River (Platteville): Mineral Point and Beloit, Wisconsin; (Jannon Falls, 



Minnesota; Lee County, Hlinois. 

 Plesiotype.— Cat. No. 46086, U.S.N.M. 



Ambonychia radiata of authors. See Byssonychia radiata. 



Ambonychia Rauchi McChesney. 



Ambonychia Rauchi McChesney, Desc. New Fossils, 1860, p. 89. 

 Maysville or Richmond: Madison, Indiana. 



Observation. — Probably refers to some species of Byssonchia, but description 

 is too poor for identification. 



Ambonychia retrorsa Miller. See Byssonychia rotrorsa. 



Ambonychia robusta Miller. See Byssonychia robusta and I>. richmondeusia. 



Ambonychia septentrionalis ^Vhiteaves. 



Ambonychia septentrionalis Whiteaves, Geol. Surv. Canada, Ann. Rep. (n. s.), 



14, App. F, 1904, p. 46; Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 255, 



pi. 28, fig. 5. 

 Niagaran: Ekwan River, Canada. 



Ambonychia htri^cobta McChesney. See Pterinea strisecosta. 



Ambonychia subundata Miller. See Clioiiychia subuiidata. 



Ambonychia huperba Billings. See Clioiiychia superba. 



Ambonychia Swanana Safford. 



Ambonychia Swanana Safford, Geol. Tennessee, 1869, p. 287 (nom. nud.). 

 Upper Nashville: Central Tennessee. 



Ambonychia tenuistriata Miller. See Byssonychia tenuistriata. 



Ambonychia undata Hall. See Clionychia undata. 



Ambonychia undulata (Whitfield). 



Leptodomus undulatus ^\^litfield, Ann. Rep. Wisconsin Geol. Surv. for 1877, 



1878, p. 81; Geol. Wisconsin, 4, 1882, p. 293, pi. 18, figs. 1, 2. 

 Ambonychia undulata Whiteaves, Ann. Rep. Geol. Surv. Canada (n. s.), 14, 



App. F, 1904, p. 46; Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 254, 



pi. 28, fig. 4. 

 Niagaran: Wauwatosa, Wisconsin (Racine); Ekwan River, Canada. 



