260 



ECHINODERMATA. 



MAR. — MEG. 



Kig. 358. — Marlacri- 

 n us carleyi. 



carleyi, Hall, 1862, (Glyptocrinus car- 

 leyi,) Trans. Alb, 

 Inst., vol. 4, p. 203. 

 and 11th Rep. Geo. 

 and Nat. Hist. Ind., 

 p. 261, Niagara Gr. 

 macropetalu8, Hall, 

 1859, Pal. N. Y., 

 vol. 3, p. Ill, Low. 

 Held. Gr. 

 nobillissimus, Hall, 

 1859, Pal. N. Y., 

 vol. 3, p. 105, Low. 

 Held. Gr. 

 pachydactylus, Conrad, 1841, (Astrocri- 

 nites pachydactylus,) Ann. Rep. N. Y., 

 p. 34, and Pal. N. Y., vol.3, p. 107, Low. 

 Held. Gr. Syn. (?) for M. polydac- 

 tvlus. 

 paucidactylus, Hall, 1859, Pal. N. Y., vol. 



3, p. 109, Low Held. Gr. 

 plumosus, Hall, 1859, Pal. N. Y., vol. 3, 



p. 110, Low. Held. Gr. 

 polydacLylus, Bonny, 1837, (Actinocrinus 

 polydactylus,) Am. Joar., vol. 31, syn. 

 form, pachydactylus? 

 ramosus, Hall, 1859, Pal. N. Y., vol. 3, p. 



147, Low. Held. Gtt. 

 stoloniferus, Hall, 1859, Pal. N. Y., vol. 



3, p. 112, Low. Held. Gr. 

 warreni, Ringueberg, 1888, Proc. Acad. 

 Nat. Sci. Phil., p. 133, Niagara (Jr. 

 Marsupiocrints, Phillips, 1839, Murch. Sil. 

 Syst., p. 672. [Lty. mamipog, bag; 

 krinon, lily.] Basals 3; primary radials 

 2x5; secondary radials 2x5; arms 20; 

 distinguished from Platycrinus by the 

 higher order of radials, by the round 

 column, instead of elliptic, and by hav- 

 ing a larger canal. Type M. crelatus. 

 dactylw, see Lyriocrinus dactyl us. 

 tennesseensis, Roemer, 1860, (Platycrinus 

 (tennesseensis,) Sil. Fauna WestTenn., 

 p. 35, Niagara Gr. 

 tentacnlatus, Hall, 1861, (Platycrinus 

 tentaculatus,) Pal. N. Y., vol. 3, p. 116, 

 Low. Held. Gr. 

 Megistocrinus, Owen & Shumard, 1852, Geo. 

 Sur. Wis., Iowa, and Minn., p. 5i»4. 

 [Ety. megi8t08, very great; krinon, lily.] 

 Body basin-shaped ; basals 3 ; primary 

 radials 3x5; secondary radials 1x10; 

 tertiary radials 1 or more x 20; inter- 

 radials numerous; first azygous plate 

 like the first radials, and resting on the 

 basals, succeeded by three plates, and 

 these by numerous smaller ones ; arms 

 in double series of short plates, bifur- 

 cating and bearing pinnules; vault 

 convex ; orifice excentric or lateral ; 

 column round. Type M. evansi. 

 abnormis, Lyon, 1857, (Actinocrinus ab- 

 normis,) Geo. Sur. Ky., vol. 3, p. 479, 

 Up. Held. Gr. 

 concavus, Wachsmuth, 1885, Proc. Dav. 



Acad. Sci. vol. 4, p. 96, Ham. Gr. 

 brevicornis, Hall, 1858, (Actinocrinus 

 brevicornis,) Geo. Sur. Iowa, p. 571, 

 Burlington Gr. 



crassus, White, 1862, Proc. Bost. Soc. Nat. 

 Hist., vol. 9, p. 17, Burlington Gr. 



depressus, Hall, 1862, 15th Rep. N. Y. St. 

 Mus. Nat. Hist., p. 134, Hamil- 

 ton ( ir. 



evansi, Owen & Shumard, 1850, (Actino- 

 crinus evansi,) Jour. Acad. Nat. Sci. vol. 

 1, pt. 2, p. 68, and Geo. Sur. Wis., Iowa, 

 and Minn., p. 5!»4, Burlington Gr. 



farnsworthi, White, 1876, Proc. Acad. Nat. 

 Sci., p. 29, Ham. Gr. 



infelix, see Saccocrinus infelix. 



knappi, Lyon it Casseday, 1857, Proc. 

 Acad. Nat. Sci. Phil., p. 412,Up. 1 [eld.< i r. 



hit us, Hall, 1858, Geo. Sur. Iowa, vol. 1, 

 pt. 2, p. 480, Ham. Gr. 



marcouanus, see Saccocrinus marcouanus. 



necis, see Snccocrinus necis. 



nobilis, Wachsmuth & Springer, (in press,) 

 Geo. Sur. 111., vol. 8, p. 169, Waverly 

 or Kinderhook Gr. 



nodosus, Bar- 

 ris, 18 79, 

 Proc. Dav. 

 Acad. Nat. 

 Sci., vol. 2, 



&285, Up. 

 eld. (ir. 

 nodosus var. 



multidecor- 



atus,Barris, 



1885, Proc. 



Dav. Acad. 



Nat. Sci., 



vol.4, p. 98, 



Ham. < Jr. 

 Ontario, Hall, Via. 869.— MeRlRtocrlnus plle»- 



L862 15th " 1S View of vault. 



Rep.' N. Y. St. Mus. Nat. Hist., p. 136, 



1 I:illl. ( if. 



parvirostrix, syn. for M. plenus. 

 parvus, Wachsmuth it Springer, (in press,) 

 Geo. Sur. 111., vol. 8, p. 171, Kinder- 

 hook < i r. 



p i 1 eatus, 

 S. A. Mil- 

 ler, 1879, 

 Jour. ('in. 

 Boc. Nat. 

 Hist., vol. 

 2, p. 114, 

 Dp. Held. 

 Gr. 

 plenus, 



Wh Ite, 

 L862,Proa 



Host. Soc. 

 Nat.Hist., 

 vol. 9, p. 

 16, Bur- 

 1 i ngt o n 

 Gr. 



rugosus, Lyon & Casseday, 1859, Am. 

 Jour. Sci., vol. 28, p. 243, Up. 

 Held Gr. 

 spinulosus, Lyon, 1861, Jour. Acad. Nat. 



Sci. Phil., p. 413, Up. Held. Gr. 

 whitii, Hall, 1861, Jour. Bost. Soc. Nat. 

 Hist., vol. 7, p. 271, Burlington Gr. 



Fig. 360. — Megistocrinus pilea- 

 tus. View from below. 



