CRINOIDEA. (IV, F.) 
Echin. 107 
Actinocr.) Hall, redescr. (p. 615, pi. lv); G. thalia (olim Actinocr. \ 
redescr., incl. A. infrequens Hall, et A. nodosus S. A. Miller (p. 604, 
pis. lvi & lvii); G. tketis (olim Actinocr.) Hall, redescr., incl. A. 
secwrus Hall (p. 614, pi. lvi); Wachsmuth & Springer (336). 
G. denticulatus , Lower Burlington Limest., Burlington, la. ; Wachsmuth 
& Springer (336) p. 606, pi. lvii. — C. extensus , ibid., incl. Actinocr. 
sexarmatus ( pars) Hall; op. cit. p. 616, pi. lvii.— C. obesus (quoted as 
Keyes MS), Lower Burlington Limest., Hannibal, Mo.; op. cit. p. 613, 
pi. lv : n. spp. 
Galamocrinus , proximale (p. 40), root (p. 51), arm-branching (p. 78), orals 
(p. 99); Wachsmuth & Springer (336). 
t Galccocrinidce, definitions after Bather; Zittel-Eastman (357) p. 154: 
syzygies, armlets (p. 82), systematic position (pp. 157 & 158); 
Wachsmuth & Springer (336). 
t Calceocrinus i compound RR; Wachsmuth & Springer (336) p. 72. 
t Gallicrinus, rediagnosed ; Wachsmuth & Springer (336) p. 353: vide 
etiam sub Gryptodiscus. — C. acanthinus , redescr. (p. 356, pi. lxxxiii) ; 
C. beachleri, redescr. (p. 355, pi. lxxxiii); G. cornutus , redescr., incl. 
var. ex cavatus Hall (p. 357, pi. lxxxiii) ; (?) G. ramifer (olim Eucalyp- 
tocrinus) Roemer, redescr. (p. 358) ; Wachsmuth & Springer (336). 
\Calpiocrinus , base (pp. 52, 58), arm-branching (p. 77); Wachsmuth & 
Springer (336). 
\Galyptocrinidce , stem (p. 43), defined, analysis and distribution of genera 
(p. 330); Wachsmuth & Springer (336): defined, incl. Gallicr. t 
Eucalyptocr., Hypanthocr . ; Zittel (356), p. 133, & Zittel-Eastman 
( 357) p. 148. 
+ Gamarocystida — Lobolitkes , regarded as brood-pouches or parasite-cysts of 
crinoid stems; Haeckel (118) p. 168. 
Gamerata W. & Sp. (p. 26), redefined (pp. 149, 151), geol. history and clas- 
sification (p. 162), analysis of families (p. 170), geol. and geogr. distrib. 
(pp. 171 & 172); Wachsmuth & Springer (336) : (= Sphceroidocri- 
nacea Neumayr) defined, incl. famm. G aster ocomidxe, Platycrinidce , 
Hexacrinidce, Actinocr inidoe, Barrandeocrinidce , Glyptocrinidce , Rhodo- 
C7'inidce, Melocrinidce , Polypeltidce , Galyptocrinidxe , Grotalocrinidce ; 
Zittel (356) p. 126: classification of Wachsmuth & Springer (336) 
given, and partly followed; Zittel-Eastman (357) p. 138. 
f Gamptocrinus, n. subg. of Dichocrinus , with genotype G. myelodactylus , 
Keokuk group, Indian creek, Montgomery Co., Ind. (p. 779, pi. lxxv) ; 
G. cirrifer , Kaskaskia group, near Sloans Valley, Pulaski Co., Ky. 
(p. 780, pi. lxxvi) ; the cirri of the two species (p. 44) ; Wachsmuth 
& Springer (336) : n. spp. 
Ganaliculata Chapman ; Wachsmuth & Springer (336) p. 30. 
t Ganist\f\ocrinus \ James (146): rejected, G. richardsoni is Glyptocrinus , 
G. patter soni is indet. ; Wachsmuth & Springer (336) p. 174. 
■\GarabocrinuSy tegmen (pp. 137, 162), anals (p. 127), anus (p. 137); 
Wachsmuth & Springer (336). 
t Gastanocrinus Roemer, syn. of Melocrinus ; Wachsmuth & Springer 
( 336) p. 293. 
\GatillocrinicUe , arms (p. 82), systematic position (pp. 157 & 158) ; 
Wachsmuth & Springer (336) : defined (p. 153) Zittel-Eastman 
(357). 
f Gatillocrinus, chambered organ (p. 45), compound RR (p. 72), axial 
canals (p. 142) ; Wachsmuth & Springer (336). 
t Gentrocrinus W. & Sp. 1881, non Austin 1843, nec Worth en [nomen 
mutandum est], rediagnosed (p. 308), G. pentaspinus, redescr., incl. 
<7. multicornus (p. 309, pi. xxv); Wachsmuth & Springer (336). 
t Geriocrinus, anals; Wachsmuth & Springer (336) p. 133. — G. greppini 
Oppel, made syn. of Millericrinus milleri ; Hug (133) p. 405. 
