42 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Ampyx (Lonchodomas) hastatus Ruedemann. 



Ampyx (Lonchodomas) hastatus Ruedemann, Bull. New York State Mus., 49, 



1902, p. 48, pi. 3, figs. 1-10, 30. 

 Mohawkian (Rysedorph): Rysedorph Hill, Rensselaer County, New York. 



AMPYX JILLSONI Safford. See Ampyx americanus. 



Ampyx (Lonchodomas) Iseviusculus (Billings). 



Ampyx Iseviusculus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 295, 



fig. 285. 

 Chazyan (Quebec-N): Table Head, Newfoundland. 



Ampyx niagarensis Van Ingen. 



Ampyx niagarensis Van Ingen, School of Mines Quart., 23, 1901, p. 53, fig. 15, pi. 

 figs. 11, lla. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 259, fig. 

 1550. 

 Niagaran (St. Clair): St. Clair Spring, Independence County, Arkansas. 



Ampyx (Lonchodomas) normalis (Billings). 



Ampyx normalis Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 295, fig. 286. 



Miller, N. A. Geol. Pal., 1889, p. 528, fig. 958. Vogdes, Amer. Geol., 11, 



1893, p. 107, fig. 6. 

 Ampyx (Lonchodomus) normalis Grabau and Shimer, N. A. In4ex Fossils, 2, 



1910, p. 259. 

 Chazyan (Quebec-N, P.): Table Head and Pistolet Bay and four miles northeast 



of Portland Creek, Newfoundland. 



Ampyx quadricostatus (Emmons). 



Microdiscus quadricostatus Emmons, Amer. Geology, 1, pt. 2, 1855, p. 116, pi. 1, 

 fig. 8; Man. Geol., 1860, p. 88, fig. 73. Barrande, Bull. Soc. Geol. France, 

 2d ser., 18, 1861, p. 280, pi. 5, fig. 13. Marcou, Mem. Boston Soc. Nat. Hist., 

 4, 1888, p. 128. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 405, 

 fig. Miller, N. A. Geol. Pal., 1889, p. 557, fig. 1033. 

 Chazyan (Athens): Augusta County, Virginia. 



Ampyx (Lonchodomas) rutilius (Billings). 



Ampyx rutilius Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 296. Vogdes, 



Amer. Geol., 11, 1893, p. 108. 

 Chazyan (Quebec-P.): Four miles northeast of Portland Creek, Newfoundland. 



Ampyx (Lonchodomas) semicostatus (Billings). 



Ampyx semicostatus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 297, fig. 



287. Vogdes, Amer. Geol., 11, 1893, p. 108, fig. 6. 

 Chazyan (Quebec-N, P.): Table Head, Pistolet Bay, and four miles northeast 



Portland Creek, Newfoundland. 



AMYGDALOCYSTIS Haeckel. See Amygdalocystites Billings. 



AMYGDALOCYSTITES Billings. Genotype: A. florealis Billings. 



Amygdalocystites Billings, Canadian Jour., 2, 1854, p. 270; Geol. Surv. Canada, 

 Rep. for 1853-1857, 1857, p. 288; Geol. Surv. Canada, dec. 3, 1858, p. 63. 

 Chapman, Expos. Min. and Geol. Canada, 1864, p. 109. Zittel. Handb. Pal., 

 1, 1879, p. 413. Billings, Trans. Ottawa Field Nat. Club, 1, No. 4, 1883, p. 

 51. Miller, N. A. Geol. Pal., 1889, p. 223. Jaekel, Zeits. d. d. geol. Gesell., 

 52, 1900, p. 675. Zittel, Grundzuge Pal., 1, 1910, p. 184. Grabau and Shi- 

 mer, N. A. Index Fossils, 2, 1910, p. 462. Springer, Zittel-Eastman Textb. 

 Pal.,2ded., 1913, p. 151. 



Amygdalocystis Haeckel, Amphor. und Cystoid., 1896, p. 106. Bather, Treatise 

 on Zool. (Lankester), pt. 3, 1900, p. 58, fig. 29. 



