682 



ECHINODERMA TA. 



[SCH. — VhO. 



lvoni, and S. maniforrnis, S. A. Miller, 

 " 1892, Advance Sheets Geo. Sur. Ind., 

 p. 45, Keokuk 

 Gr. 



SCHCSNASTER le- 



grandensis, 

 Miller and- 

 (lurley, 1890, 

 Desc. New 

 Gen. and 

 Spec. Echin- 

 odermata, p. 

 56, and 16th 

 Be p. Geo. 



Sur. Ind., p. 371, Kinderhook Gr. 

 Steganocrinis benedicti, S. A. Miller, 1892. 



Advance Sheets 18th Rep. Geo. Sur. Ind., 



p. 27, Keokuk Gr. 



Fig. 1246. — Schcenaster le- 

 grandensls. 



Fig. 1247.— Schcenaster legrandensis. Part of ven- 

 tral side magnified »>' .. diameters. 



Stkphanocrinus elongatus, S. hammelli, 

 S. obpyrarnidalis. S. A. Miller, 1891, 

 17th Rep. Geo. Sur. Ind., pp. 22 to 26, 

 Niagara Gr. S. osgoodensis is rede- 

 scribed and the genus is discussed at 

 the same place, 

 cornetti, S. A. Miller, 1892, Advance 



Fig. 1248.— Steganocrlnus benedicti. 



Sheets 18th Rep. Geo. Sur. Ind., p. 12, 

 Niagara Gr. 

 Stribalocystitks, S. A. Miller, 1891, Ad- 

 vance Sheets 17th Rep. Geo. Sur. Ind., 

 p. 20. [Ety. stribalos, close pressed, 

 thick, in allusion to the thick tumid 

 plates; kuslis, bladder.] Body rudely 



subovate or subelliptical, and covered 

 by about five series of tumid plates. 



Fig. 1249.— Stribalocystitesgorbyl. Side, summit, 

 and basal views. 



Basals 4, unequal ; second series of 



plates 6, unequal ; fourth and fifth 



series irregular 



and covering the 



summit; no 



arms; orifice 



near the summit 



On the azvgOUS Fig. 1250. — Ktrilmlocys- 



side, and another Utes jumiduB. side 



_._ ,i , and basal views. 



on the left near 



the summit, both being above (he 

 third range of plates; sometimes there 

 is a central orifice. Type S. tumidus, 

 which is described at the same place, 

 from the Niagara Gr. 

 gorbyi, S. A. Miller, 1892, Advance Sheets 

 lstli Rep. I ho. Sur. Ind., p. 11, Niagara 

 Gr. 

 Synbathocrinus blairi, S. A. Miller, 1891, 

 Bull. No. 4, Geo. Sur. Mo , p. 32, Keo- 

 kuk ( ir. 

 wachsmuthi, Meek & Worthen, 1869, 

 Proc. Acad. Nat. Sci., p. 67, and Geo. 

 Sur. 111., vol. 5, p. 437, Burlington Gr. 

 Taxocrinus spinifer, Hall, 1861, Proc. Bost. 

 Soc. Nat. Hist., p. 318, 

 Burlington (ir. 

 subovatus, Miller & 

 Gurley, 1890, Desc. 

 New Gen. and Spec. 

 Echinodermata, p. 26, 

 and 16th Rep. Geo. 

 Sur. Ind., p. 347, 

 Keokuk Gr. 

 Technocrinus spinulosus 

 is the type of the 

 genus. 



Troostocrinus laterniformis, Owen & Shu- 

 mard, 1850 (Pentremites laterniformis), 

 Jour. Acad. Nat. Sci. 2d ser., vol. 2, p. 

 66, Kaskaskia Gr. 

 nitidulus, Miller & Gurley, 1890, Desc. 

 New Gen. and Spec. Echinodermata, p. 

 58, and 16th Rep. Geo. Sur. Ind., p. 373, 

 St. Louis Gr. 

 wachsmuthi, Gurley, 1884, New Carb. 

 Foss. Bull. No. 2, p. 1, Warsaw Gr. 

 Ulocrinus, Miller & Gurley, 1890, Jour. 

 Cin. Soc. Nat. Hist., vol. 13, p. 6, and 

 16th Rep. Geo. Sur. Ind., p. 330. [Ety. 

 oulos, solid, substantial ; krinon, lily.] 

 Calyx globular or pyramidal, large, 

 plates more or less convex, smooth or 

 granular. Basals 5, forming a pentag- 

 onal disc or low cup ; columnar open- 

 ing pentagonal ; subradials 5, very 

 . large ; first radials large, pentagonal, 

 upper face projects over the interior of 

 the caJyx so as to make a broad articu- 



Fig. 1251x— axo c 

 rin us subovatus 



