284 



ECHINODERMA TA. 



[SYN. 



izontal disk, completely isolating the 

 azygous and interradial areas, from the 

 vault, and supporting the free, ascend- 



Kiq 486— Strolocrlnus regalia 



ing arms around its margin ; interradi- 

 als 9 or 10 or more; azygous iuterradi- 

 als 9 to 13 or more, the first one resting 

 on the basals ; vault depressed, opening 

 subcentral ; arms 30 to 72 or more; col- 

 umn round. Type S. perumbrosus. 

 asperrimus, Meek A Wort hen, 1869, Proc. 

 Acad. Nat. Sci. Phil., p. 160, and Geo. 

 Sur. 111., vol. 5, p. 349, Burlington <ir 



ectypus, Meek & Worthen,. 1869, Proc. 

 Acad. Nat. Sci. Phil., p. 159, and (ieo. 

 Sur, 111 , vol. 5, p. 353, Burlington Gr. 



glyptus, Hall, 



I860, (Actino- 

 crinus glyp- 

 tus,) Supp. to 

 (ien. Sur. 

 Iowa, p. 2, 

 Bu r li ugton 

 Gr. 

 p p r u m brosus, 

 Hall, 1860, 

 (Actinocrinus 

 peruinbro- 

 sup.i Svpp. to 

 Geo. Sur. 

 Iowa, p. 7, 

 Burl injrton 



<; r . 



regalis, Hall, 

 1860, (Actino- 

 crinus rega- 



lis,) Supp. to 

 i i «•<> . Sur. 

 Iowa, p. 8, 

 and Geo. Sur. 

 Burlington Gr. 



Fig. 437.— Htrotocrlnus regalit". Diagram,!^ diam 



bloomfieldensis, S. A. Miller, 1882, Jour. 

 Cin. Soc. Nat. Hist., vol. 2, p. 258, and 

 vol. 4, p. 76, Up. Burlington or Keo- 

 kuk Gr. 



dilatatus, see Physetocrinns dilatatus. 



111., vol. 2, p. lit!', 

 umbrosus, Hall, 1858, (Actinocrinus um- 

 brosus,) Geo. Sur. Iowa, p. 660, Burling- 

 ton Gr. 

 Synbathocrinus, Phillips, 1836, Geol. York- 

 shire, pt. 2, p. 206. [Kty. *vn, together ; 

 bathcn, depth ; krinon, lily.] Calyx 

 small ; arms large and of great length ; 

 basals 3 ; radials 2x5; azygous plates 1 ' 



2 or more ; 



arms simple 



and com- 

 posed of 



plates in sin- 

 gle series. 



Type S. con- 



icus. 

 brevis, Meek 



& Worthen, 



1869, Proc. 



Acad.  Nat. 



Sci. Phil., p. 



68, and Geo. 



Sur. 111., vol. 



5, p. 486, 



Burlington 



Gr. 

  dentatus, 



Owen&Shu- 



mard, 1852, 



(ieo. Sur. 



Wis., Iowa, 



and Minn., Fig. 438. — Synbathocrl- 



ft 697 Bur- uus granuliferus. An- 

 i' «. ' f,„ terior and posterior 

 ington Gr. views 



granu lotus, 

 Troost. Not defined, 

 granuliferus Wetherby, 1880, Jour. Cin. 

 Soc. Nat. Hist, vol. 2, p. 250, Wa- 

 verly Gr. 

 matutinus, Hall, 1858, Geo. Sur. Iowa, p. 

 483, Ham. Gr. 



