BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 961 



Petigurus cybele Continued. 



Canadian: Mingan Islands, Beauharnois, and counties of Leeds and Grenville, 

 Canada; Orwell, Vermont, and Comstocks Landing, New York (Beekman- 

 town). 



Petigurus? ellipticus (Cleland). 



Bathyurus ellipticus Cleland, Bull. Amer. Pal., 3, 1900, p. 129 (257), pi. 16, figs. 



'5, 6; ibid., 4, 1903, p. 11, pi. 3, fig. 3. 

 Canadian (Little Falls): Near Fort Hunter, New York. 



Petigurus nero (Billings). 



Bathyurus Nero Billings, Pal.Foss., 1, Geol. Surv. Canada, 1865, p. 260, fig. 

 243a-d. 



Petigurus nero Raymond, Bull. Victoria Memorial Mus., 1, 1913, p. 59, pi. 7, fig. 8. 



Canadian (Quebec F-N): Keppel Island, Pistolet Bay, Table Head, etc., New- 

 foundland. 



PETRAIA Zittel. See Streptelasma Hall. 



PETRAIA CALIGULA Hall. See Enterolasma caliculum. 



PETRAIA CANADENSIS Billings. See Streptelasma rusticum. 



PETRAIA FANNINGANA Safford. See Ditcecholasma fanningana. 



PETRAIA MINGANENSIS Billings. See Archseoscyphia minganensis. 



PETRAIA OTTAWAENSIS Billings. See Streptelasma corniculum. 



PETRAIA PULCHELLA Billings. See Streptelasma selectum. 



PETRAIA PYGM^A var. OCCIDENTALS Whiteaves. See Streptelasma occidentale. 



PETRAIA WAYNENSIS Safford. See Enterolasma waynense. 



PETRASTER Billings. Genotype: Palseasterina rigidus Billings. 



Petraster Billings, Geol. Surv. Canada, dec. 3, 1858, p. 79. Chapman, Canadian 

 Jour., n. s., 6, 1861, p. 517; Expos. Min. and Geol. Canada, 1864, p. 111. 

 Hall, 20th Rep. New York State Cab. Hist., 1868, p. 294; rev. ed. 1870, p. 

 337. Nicholson and Etheridge, Mon. Sil. Foss. Girvan Dist., 1880, p. 322. 

 Miller, N. A. Geol. Pal., 1889, p. 269. James, Jour. Cincinnati Soc. Nat. Hist., 

 18, 1895, pp. 126, 134. Schuchert, Bull. U. S. Nat. Mus., 88, 1915, p. 138. 



Pakeaster (part) Zittel, Handb. Pal., 1, 1879, p. 452. 



Petraster? americanus (D'Orbigny). 



Fossil Asterias Graham, Anthony and James, Amer. Jour. Sci. Arts, 2d ser., 1, 



1846, p. 441, fig. 



Coelaster americanus D'Orbigny, Prod, de Pal., 1, 1849, p. 22. 

 Asterias anthonii Dana, Manual Geol., 1st ed., 1863, p. 221, fig. 

 Palasterina jamesi Dana, Amer. Jour. Sci., 2d ser., 25, 1863, p. 295; Manual Geol., 



2ded.,1864, p. 221, fig. 

 Palaeaster jamesi Hall, 20th Rep. New York State Cab. Nat. Hist., 1868, footnote, 



p. 284; rev. ed. 1870, p. 329. Meek, Geol. Surv. Ohio Pal., 1, 1873, p. 62, 



pi. 4, fig. 4. James, Jour. Cincinnati Soc. Nat. Hist., 18, 1895, p. 127. 

 Palseaster (Palseasterina?) jamesi Lesley, Geol. Surv. Pennsylvania, Rep., P 4, 



1889, p. 577, fig. 

 Petraster(?) americanus Schuchert, in Freeh, Foss. Cat., 1, Anim., pt. 3, 1914, 



p. 32; Bull. U. S. Nat. Mus., 88, 1915, p. 146, pi. 26, fig. 2. 

 Maysville (Fairmount): Cincinnati, Ohio. 



