116 Echin. 
XIV. ECHINODERMA. 
Niagara group, St. Paul, Ind. (p. 516, pi. xxxiv); Wachsmuth & 
Springer (336) : n. spp. 
■ \Hadrocrinus , arm-branching (p. 77), rediagnosed (p. 327); H. discus , 
redescr. (p. 328, pi. xxiv) ; II. plenissimus, , redescr. (p. 328, pi. xxiv) ; 
Wachsmuth & Springer (336). 
t Hapalocrinidce, the family rejected ; Bather (30) p. 343. 
illapalocrinus , erected as singlo genus with subgenera Hapalocrinus , s. str. 
(II. elegans ), group of II. (Agriocrinus) Frechi , and group of II. ( T hallo - 
crinus) retiarius ; Frech (88) p. 182: rediagnosed, includes Agrio- 
crinus and Thallocrinus, genotype is H. elegans Jaekel ; Bather (30) 
p. 344. — II. retiarius , systematic position discussed; Bather (30) 
p. 342: referred to n. g. Clematocrinus ; Jaekel (144) p. 47. 
H. victories, Silurian, Melbourne ; Bather (30) Geol. Mag. (N. S. Dec. iv) 
iv, p. 345, pi. xv : n. sp. 
Haplocrinacea Neumayr; Wachsmuth & Springer (336) p. 29. 
+ Haplocrinidce, defined, includes Haplocrinus ; Zittel (356) p. 124, & 
Zittel-Eastman (357) p. 134. 
Haplocrinides Pictet; Wachsmuth & Springer (336) p. 18. 
t Haplocrinus, anus (p. 137), compound RR (p. 72), orals (pp. 89, 92, 
pi. iii); Wachsmuth & Springer (336). — II. stellaris; Beyer (38) 
p. 88, pi. iii, f. 79. 
\Harmocrinus Ang., is possibly Thysanocnnus ; Wachsmuth & Springer 
( 336) p. 280. 
t Hemicrinus astieri ; Kilian (157) p. 733. 
t Ilerpetocrinus, cirri; Wachsmuth & Springer (336) p. 44. 
t Heterocrinidee, armlets; Wachsmuth & Springer (336) p. 82: defined, 
includes Ileterocr., Iocr., Stenocr., Ophiocr. [err. pro Ohiocr .] ; Zittel 
( 356) p. 134: add Herpetocr.; Zittel-Eastman (357) p. 152. 
t Heterocrinus, relations to Ottawacr. (p. 68), stem (p. 40), compound RR 
(p. 71), syzygies (p. 82), anals (p. 127); Wachsmuth & Springer 
(336). — H. bellevillensis, anals; Wachsmuth & Springer (336) p. 132. 
— H. pygmeeus is young of Dactylocr. oligoptilus; Jaekel (144) p. 44. 
Mlexacrinidce, redefined, analysis and distribution of genera; Wachsmuth 
& Springer (336) p. 741 : defined, includes Dichocr., Hystricr., Hexacr . ; 
Zittel (356) p. 127 : also Arthroacantha , Pterotocr., Talarocr . ; Zittel- 
Eastman (357) p. 140. 
t Hexacrinus \ Frech (88) p. 177: rediagnosed (p. 744), arms (p. 79); 
Wachsmuth & Springer (336). — H. elongatus'i -, Beyer (38) p. 89, 
pi. iii, fig. 77. — H. leai, redescribed; Wachsmuth & Springer (336) 
p. 746, pi. lxxviii. — H. ornatus'l ; Beyer (38) p. 89, pi. iii, fig. 78. 
H. occidentals, Hamilton group, near Davenport, la. ; Wachsmuth & 
Springer (336) p. 745, pi. lxxviii : n. sp. 
t Holocrinus wagneri\ Wagner (337) p. 100. 
Holopidce, defined, includes Cyatliidium, Holopus, Cotylederma; Zittel 
( 356) p. 143, and Zittel-Eastman (357) p. 171. 
t Homocrinus, arm-branching (p. 78), anals (p. 127); Wachsmuth & 
Springer (336). — II. scoparius , cirri; Wachsmuth & Springer (336) 
p. 45. 
\Hoplocrinus, compound RR ; Wachsmuth & Springer (336) p. 71. 
f Hybocrinidce, tegmen; Wachsmuth & Springer (336) p. 116: defined, 
includes Hybocr. and Bacrocr . ; Zittel (356) p. 134 : add Hoplocr. and 
IIybocystis\ Zittel-Eastman (357) p. 151. 
illybocrinus, tegmen (p. 162), baso (p. 67), compound RR (p. 71), anals 
(p. 127); H. conicus, anus (p. 137); Wachsmuth & Springer (336). 
fHybocystis, considered as link with Cystids; Wachsmuth & Springer 
( 336) p. 146. 
\IIydreionocrinus, arms ; Wachsmuth & Springer (336) p. 80. — IIydrei[o\- 
nocrinus mucrospinosus ; Smith (313) p. 236. 
