CRIN01DEA. IV, F. 
Ech. 67 
+ Poteriocrinus : — P. brittsi ; Keyes (70) p. 211. P. (olim Cyatkocrinus) 
gracilior , see Agriocrinus. P. isacobus compared with Plicatocrinus ; 
Jaekel (67) p. 93. P. minutus , see Lophocrinus. P. patulus, see 
Gastrocrinus. P. rhenamis , J. Miiller pars, see Orthocrinus. 
P. altonensis, St. Louis Group. Alton, 111. (p. 62), P. blairi , Burlington 
Group, Sedalia, Mo. (p. 61), P. broadheadi , Chouteau Limestone, 
Sedalia, Mo. (p. 63), P. sampsoni , Chouteau Limestone, Sedalia, Mo. 
(p. 65); Miller (115) Bull. Illinois Mus. vii ; P. vagulus, Kaskaskia 
Group, Pulaski Co., Ky. ; Miller (114) Bull. Illinois Mus. vi, p. 46 : 
n. spp. 
f Proteuryale confluentina , see Culicocrinus. 
\ Pterotocrinus : — P. cheslerensis ; Keyes (70) p. 206. 
P. welherbyi , Kaskaskia Group, Pulaski Co., Ky. ; Miller (114) Bull. 
Illinois Mus. vi, p. 44, n. sp. 
f Ptychocrinus splendens ; Keyes (70) p. 162. 
t Rhadinocrinus , n. g., with type R, rhcnanus, Lower Dovonian of Coblonz \ 
Jaekel (67) Pal. Abh. vii, p. 87, n. sp. 
t Rhipidocrinus, synonymy discussed ; Jaekel (67) p. 25. R. crenatus ?, 
from Lummaton, figured ; Whidborne (168) p. 203. 
f Rkizocrinm santagatai, not a crinoid, but = Bathy siphon filiformis ; 
Capellini (18 & 19). 
f Rhodoci'inus, synonymy discussed ; Jaekel (67) p. 25. R. ( Acantho - 
crinus ) sp., fragment from Wolborough, figured ; Whidborne (168) 
p. 204. R. coxanus , refigured ; Keyes (70) p. 163. R. gonatodes , 
Muller, referred to Diamenocrinus gonatodes , D. pachydactylus , and 
D. grandis ; Jaekel (67) pp. 24, 28 & 29. R. wachsmuthi (p. 163), 
R. ichitei (p. 163), R. wortheni (p. 162) ; Keyes (70). 
f Saecocoma, relations in Palaeozoic ; Jaekel (67) pp. 93 & 96. 
f Saccocrinus umbrosus , Niagara Group, St. Paul, Ind. ; Miller (114) 
Bull. Illinois Mus. vi, p. 24, n. sp. 
*|* Sampsonocrimis , n. g., with type S. hemisphericus , Chouteau Limestone, 
Sedalia, Mo. ; Miller (115) Bull. Illinois Mus. vii, p. 51, n. sp. 
\ Scaphiocrinus : — S. P boonvillensis (p. 212), S. dactyliformis (p. 211), S. ? 
gorbyi (p. 213), S. missouriensis , refigured (p. 211), S. proboseidialis 
(p. 212), S. rusticellus, refigured (p. 212), S.? sampsoni (p. 213), 
S. scoparius (p. 212) ; Keyes (70). 
f Scoliocrinus , n. g., with type S. eremita , Middle Devonian of Pehn in 
the Eifel ; Jaekel (67) Pal. Abh. vii, p. 76, n. sp. 
f Scytalocrinus . — S. dactylus , and S. vanhornei ; Keyes (70) p. 213. 
f Shumardocrinus, n. g., with type S. concinnus , Shumard, olim Actino- 
crinus , redescribed on a specimen from Burlington Group, Sedalia, 
Mo. ; Miller (115) Bull. Illinois Mus. vii, p. 41. 
f Sphcerocrinidce , n. fam. for Sphcerocrinus } Gastrocrinus, and Parisocrhius ; 
Jaekel (67) p. 64. 
f Sphwrocrinus, morphological description ; Jaekel (67) p. 68. S. 
geometricus ; Jaekel (67) p. 72 : discussed and specimens from 
Wolborough figured ; Whidborne (168) p. 211. 
