1881.] NATURAL SCIENCES OF PHILADELPHIA. 329 



1860. Amphoraor. divergens Hall. (Actinoor. divergens) Supp. Geol. Rep., Iowa, 

 p. 36.; Meek and Worthen, 1873, Geol. Rep. 111., v, p. 388, PI. 6, fig. 6. 

 Lower Burlington limest. Burlington, Iowa. 



-%". Amphoraor . divergens var. multiramosus Meek and Worth., 1873. Geol. 

 Rep. 111., V, p. 389, PI. 6, fig. 6. 



Syn. Amphoraor. planobasilis Hall, 1860. Supp. Geol. Rep. Iowa, p. 19, 

 PL 4, figs. 10, 11 ; Amphoraor. planobasilis Meek and Worth., 1873, Geol. 

 Rep. 111., V. p. 388. 



Si/n. Actinoor. quadrispinus White. Proe. Bost. Soc. Nat. Hist., ix, p. 15; 

 Amphoraor. quadrispinus Meek and Worthen. Geol. Rep. 111., v, p. 388. 

 1821. Amphoraor. Gilbertsoni Miller (not de Koninck). Type of the genus.. Aoti- 

 nocr. Gilbertsoni (Philips, 1836, Geol. of Yorkshire, p. 206, PI. 4, fig. 19; 

 Austin, 1842, Ann. and Mag. Nat. Hist., x, p. 109 ; Amphoraor. Gilbertsoni. 

 Quart. Journ. Geol. Soc. London, iv, p. 292 ; Bronn, 1860, Klassen d. Thier- 

 reichs, ii, PI. 28, fig. 2; Quenstedt, 1862, Handb. d. Petref., p. 619, PI. 54, 

 figs. 24 a, b. Subcarboniferous. Florence Court, Ireland. 



Syn. Amphora No. 2. Cumberland, 1826, Reliquiae Conservata, p. 36. 



Syn. Melocr. amphora Goldfuss, 1838. Nova Acta Ac. Leop., xix, p. 341. 



Syn. Aotinocr. amphora Portlock, 1843. Rep. Geol. Londonderry, PI. 20, 

 figs. 4 a, and 5 a, b; McCoy, 1844, Synops. Pal. Fo.ss. Ireland, p. 181. 

 1860. Amphoraor. spinohrachiatus Hall. (Aotinoor. spinobraohiatus) Supp. Geol. 

 Rep. Iowa, p. 6; Meek and Worthen, 1873. Amphoraor. spinobraohiatus, 

 Geol. Rep. 111., v, p. 388, PI. 6, fig. 5. Lower Burlington limest. Burling- 

 ton, Iowa. 



St/n. Aotinocr. inflatus Hall, 1860. Supp. Geol. Rep. Iowa, p. 20, (not Aoti- 

 noor. (Amphoraor.) inflatus Hall, 1861 = Agaricoor. inflatus) ; Meek and 

 Worthen, 1873, Amphoraor. (?) inflatus, Geol. Rep. 111., v, p. 388. Lower 

 Burlington limest. Burlington, Iowa 

 *1864. Amphoraor. viminalis Hall (Aotinocr. viminalis). 17th Rep. N. York St. 

 Cab. Nat. Higt., p. 64; Geol. Rep. Ohio, Paleont., ii, p. 165, PI. 11, figs. 12-14. 

 Waverly gr. Richfield, Ohio. 



19. PHYSETOCKINUS Meek and Worthen. 



(PI. 19, fig. 5). 



1869. Meek and Worthen (subgenus of Strotoeriuws) . Proc. Acad. Nat. 



Scl.Phila., p. 158. 

 1873. Meek and Worthen. Geol. Rep. 111., V, p. 349. 

 (Described by Hall under Actinocrinus.) 



Physetocrinus was proposed \)y Meek and "Worthen as a sub- 

 genus of Strotocrinus, on account of its close affinities with their 

 Strotocrinus Sect. A, both having a simple anal opening through 

 the vault. They thus separate Physetocrinus generically from 

 Actinocrinus, but they place Strotocrinus and our Teleiocrinus, 

 although these differ in the same characters, as mere sections under 

 the same generic form. Meek and Worthen evidently made the rim 

 the criterion for the generic division. This we acknowledge to be 



