288 PROCEEDINGS OF THE AMERICAN ACADEMY 



A. Vermiliaxa, King, Per. Foss., PL G, figs. 22-24; Swallow 

 and Hahn, Trans. Acad. Nat. Sci. St. Louis, Vol. 1, No. 2, 

 p. 180. In the Permian rocks of" Kansas. 



A. WoRTHENi, Hall, Iowa, Vol. 1, p. 700, PI. 26, fig. 4, a-g. 

 Stihcarboniferous. St. Louis limestone. 



ASTERIAS, Linnaeus, 1748. 



A. ANTiQTTA, Troost, Trans. Geol. Soc. of Pennsylvania, Vol. 1, 

 p. 232, PI. 10, fig. 9 ; 5th Rep. Geol. Tennessee, p. 58 : non 

 Hist. Sueci, p. 89, t. 26, f. 6. Silurian. Mountain lime- 

 stone. 



A. ANTiQUATA, Prof. Locke, Proceed. Acad. Philad., Vol. 1, p. 32. 

 Silurian. Cincinnati, Ohio. 



A. MATDTiNA, Hall, Palffiont. N. York, Vol. 1, p. 91, PI. 29, fig. 

 5, a, b. Silurian. Trenton limestone. 



A. Sp. indet.. Hall, Pateont. N. York, Vol. 1, p. 18, PI. 4, fig. 11, 

 a, b. Silurian. Chazy limestone. 



A. Sp. indet., G. Graham, J. G. Anthony, and U. P. James, Sill. 

 Jour., 2d Series, Vol. 1, p. 441, with wood-cut. Silurian. 

 Cincinnati, Ohio. 



ASTEROCRINUS. J^ide Plerotocrinus. 



ASTYLOCRINUS. Vide Agassizocrinus. 



ASTROCRINITES, Conrad (non Austin). 



A. PACHTDACTYLUS, Courad, in Mather, Geol. New York, p. 346, 

 347 ; Sill. Jour., 1st Series, Vol. 27, p. ZQ>o. Silurian. 

 Pentamerus limestone. 



ATELEOCYSTITES, Billings, 1858, Geol. Survey of Canada, 

 Palaeont., Dec. III. p. 72. Silurian. Lower Silurian. 

 A. HuxLEYi, Billings, Palaeont., Dec. HI. p. 72. Silurian. Trenton 

 limestone. 



BATOCRINUS. Vide Actinocrinus. 



CARYOCRINUS, Say, 1825, Jour. Acad. Nat. Sci. Phil., IV. 9. 

 C. ORNATUS, Hall, Palaeont. New York, Vol. 2, PI. A, 41, fig. 1, 

 PI. 49, fig. 1, a - z, PI. 49 A, fig. 1, a - d. Von Buch, Uber 

 Cystideon, Taf. 1, fig. 1 - 7. Silurian. Niagara Group. 



CLOSTEROCRINUS, Hall, 1852. 



C. ELONGATUS, Hall, Palojont. New York, Vol. 2, p. 179, PI. A, 41, 

 fig. 2, a - f. Silurian. Clinton Group. 



