scHucHEKT] INDEX AND BIBLIOGRAPHY. 141 



Amboccelia planoconvexa (Shiimard) — Continued. 



iSpiiilcia (^Martinia) planoconvexa Derby, Bull. Cornell Univ., 1, 1871, i). 19, pi. 8, 

 ligs. 12, 16, 18; pi. 9, iij;. 7. — White, Wheeler's Geogr. Geol. Expl. ami Survey 

 west 100 Merid., IV, 1875, p. 135, pi. 10, fig. 3; — Thirteenth Rep. Indiana State 

 Geol., 1884, p. 131, pi. 32, figs. 23, 24.— llerrick. Bull. Denisou Univ., II, 1887, 

 J). IG, pi. 1, fig. 12. — Keyes, Geol. Survey Missouri, V, 1895, p. 85. 



Ainbocoelia planoconvexa Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 5tj, 



pi. 39, figs. 10-15. 

 Loc. Missouri; Io\va; Illinois; Ohio; Indiana; Kansas; Nebraska; New Mexico; 



Elko Mountain, Nevada; Bomjardim and Itaituba, Brazil. 



Amboccelia praeumbona Hall. Hamilton (l)ev.). 



Ortiiis pniMimbona Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 107. 

 Amboccelia pranimbona Hall, Thirteenth Rep. Ibidem, 1860, j). 71 ; — Pal. Now 



York, IV, 1867, p. 262, pi. 44, iigs. 1-6. 

 Loc. Seneca, Cayuga, and Canandaigua lakes, New York. 



Amboccelia spinosa Hall and Clarke. Hamilton (Dev.). 



Amboctplia spinosa Hall and Clarke, Pal. New York, VIII, Pt. II, 1895, pp. 56, 

 363, pi. 39, figs. 16-18.— Clarke, Thirteenth Ann. Rep. N. Y. State Geologist, 

 1895, p. 177, pi. 4, figs. 6-8. 

 Loc. Livingston County, New York. 



Amboccelia subumbona Hall = Martinia subumbona. 



Amboccelia umbonata (Conrad). Marcellus-Chemung (Dev.). 



Orthis umbonata Conrad, Jour. Acad. Nat. Sci. Philadelphia, VIII, 1842, p. 264, 

 pi. 14, fig. 4.— Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 167, 

 figs. 1-3. 



Orthis nucleus Hall, Geol. New York; Rep. Fourth Dist., 1843, p. 180, fig. 8. 



Amboctclia umbonata Hall, Thirteenth Rep. N. Y. State Cab. Nat. Hist., 1860, 

 p. 71 ;— Pal. New York. IV, 1867, p. 2.59, pi. 44, figs. 7-18.— Nettelroth, Ken- 

 tucky Fossil Shells, Mem. Kentucky Geol. Survey, 1889, p. 86, pi. 17, figs. 25, 

 26.— Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, pi. 29, fig. 17; pi. 

 39, figs. 4-9. 



Martinia umbonata Herrick, Geol. Oh'o, VII, 1895, pi. 20, fig. 3. 



Loc. New York; Pennsylvania; Falls of Ohio. 



Amboccelia umbonata gregaria Hall = Amboccelia gregaria. 

 AMPHIGENIA Hall. Genotype Pentamerus elongatus Vanuxem. 



Amphigenia Hall, Twentieth Rep. N. Y. State Cab. Nat. Hist., 1867, p. 163;— 

 Pal. New York, IV, 1867, pp. 374, 382.— Hall and Clarke, Pal. New York, 

 VIII, Pt. II, 1893, p. 252;— Thirteenth Ann. Rep. N. Y. State Geologist, 1895 

 p. 848. 



Amphigenia curta (Meek and Wortben). Oriskany (Dev.). 



Stricklaudinia elongata var. curta Meek and Worthen, Geol. Survey Illinois, III, 

 1868, p. 402, pi. 8, fig. 1; pi. 9, fig. 5.—? Hall and Clarke, Pal. New York, VIII, 

 Pt. II, 1893, p. 254. 



Loc. Union County, Illinois. 



Amphigenia elongata (Vanuxem). Ori.skany and Up. Helderberg (Dev.). 



Pentamerus elongatus Vanuxem, Geol. N. Y. ; Rep. Third Dist., 1842, p, 132, 

 fig. 1.— Hall, Geol. N. Y. ; Rep. Fourth Dist., 1843, Tables of Organic Remains. 



Meganteris elongatus Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 123, 

 figs. 1, 2. 



Rensseheria elongata Hall, Twelfth Rep. Ibidem, 1859, p. 38;— Pal. New York, 

 III, 1859, p. 453. 



Stricklandia elongata Billings, Canadian .Jour., VI, 1861, p. 267, fige. 91, 92. 



