110 Echin. 
XIV, ECHINODERMA. 
(olim Rkodocr. Lyriocr. vel Archceocr.) White, redescribed (p. 251, 
ph xi); Wachsmuth & Springer (336). 
D. hieroglyphicus (p. 252, pi. x), and D. perplexus (p. 249, pi. xi), Trenton 
group, near Knoxville, Tenn. ; Wachsmuth & Springer (336) : n. spp. 
\Diamenocrinus , arms ; Wachsmuth & Springer (336) p. 80. 
t Dichocrinus, rediagnosed, incl. Cotyledonocr. Cass. & Ly. (p. 753), arms 
(p. 79), arm-branching (p. 77), syzygies (pp. 81, 84), cirri (pp. 41, 44); 
Wachsmuth & Springer (336). — D. angustus , redescr. (p. 768, pi. 
lxxvi) ; I). blairi, redescr. (p. 778, pi. lxxv) ; D. ductus , redescr. (p. 746, 
pis. lxxv, lxxvii); D,. comis , redescr. (p. 770, pi. lxxv); D. constrictus 
M. & W., an idem ac Talarocr. decoruis t (p. 789); D. coxanus , redescr. 
(p. 763, pi. lxxvi); D. crassitestus , redescr. (p. 769, pi. lxxvi); D. dicho- 
tomy, redescr. (p. 777) ; D. ficus, redescr. (p. 774, pi. lxxviii) ; D. 
hamiltonensis, redescr. (p. 772, pi. lxxvi) ; D. humburgi, redescr. (p. 777) ; 
D. inornatus, cirri (p. 44), redescr. (p. 770, pi. lxxvii) ; D. lachrymosus, 
ambulacrals (p. 103), redescr., inch Platycr. subspinulosus W. & Sp. 
(p. 754, pi. lxxvii) ; D. Icevis, redescr. (p. 765, pi. lxxvii) ; D. lineatus, 
redescr. (p. 761, pi. lxxvi); D. liratus, redescr. (p. 759, pis. lxxvi & 
lxxvii) ; D. ornatus , redescr., inch D. sculptus Cass. & Ly. non Do Kon. 
(p. 762, pi. lxxvii); D. ovatus, redescr. (p. 760, pis. lxxvi & lxxvii); 
D. parvulus, cirri (p. 44), redescr. (p. 778) ;' D. pentalobus (olim Coty- 
ledonocr.) Cass. & Ly., redescr. (p. 775, pi. lxxviii); D. pisum , redescr. 
(p. 763, pis. lxxvi & lxxvii); D. plicatus , redescr. (p. 758, pi. lxxvii); 
D. polydactylus, ambulacrals (p. 103), redescr., inch I). expansus M. 
& W. non De Kon. (p. 756, ph lxxvii); D. scitulus, redescr., inch 
D. pocillum Hall (p. 767, ph lxxviii); D. striatus, redescr. (p. 757, ph 
lxxvii); D. ulrichi , redescr. (p. 772); Wachsmuth & Springer (336). 
D. bozemanensis, Upper Burlington or Lower Keokuk, Bridger Mts., near 
Bozeman, Montana ; Miller & Gurley (235), Bull. Illinois Mus. xii, 
p. 44, ph iii. — D. delicatus , Kinderhook group of Marshall Co., Ia., and 
Lower Burlington Limest. of Burlington, la., cirri (p. 44); Wachs- 
muth & Springer (336), p. 766, ph lxxvii. — D. huntsvillcc, St Louis 
group, Huntsville and Whitesburg, Ala., inch Platycr. parvulus M. & 
W. (norm preocc. S. A. Miller); op. cit. p. 773, ph lxxv. — D. obloncjus, 
Warsaw Limest., near Bloomington, Ind. ; op. cit. p. 759, ph lxxvii. — 
D. pendens, Upper Burlington Limest., Burlington, Ia. ; op. cit. p. 774, 
ph lxxviii. — D. superstes, Kaskaskia group, Pulaski Co., Ky., and 
Huntsville, Ala. ; op. cit. p. 767, ph lxxvi. 
hicijclica Bather, criticised ; Wachsmuth & Springer (336) p. 157. 
t Dimerocrinus, made syn. of Thysanocr.\ Wachsmuth & Springer (336) 
p. 191. — D. oligoptilus Pacht., referred to Dactylocr. Quenst, ; Jaekel 
( 144) p. 45. — D. oligoptilus and D. aptilis, referred to Taxocr.; 
Wachsmuth & Springer (336) p. 192. 
\ Dizygocrinus, n. g., with genotype D. indianensis ; Wachsmuth & 
Springer (336) p. 413. — D. andrewsianus (olim Actinocr. et Batocr.) 
McChesney, redescr. (p. 433, ph xxix); D. biturbinatus (olim Actinocr. 
et Batocr.) redescr., inch Batocr. lyonanus Miller & Gurley (p. 427 ph 
xxxiii); D. crawfiordsdllcnsis (olim Batocr.), Miller’s description trans- 
lated (p. 417); D. decoris (olim Batocr.) S. A. Miller, redescr. (p. 420, 
ph xxxv) ; D. dodecadactylus (olim Actinocr. et Batocr.) M. & W., redescr. 
(p. 432, ph xxix); D. euconus (olim Batocr.); M. & W., redescr., inch 
B. subconicus Worthen (p. 430, ph xxxv); var. abscissus (olim Batocr. 
absdssus Rowley & Hare) inch B. venustus S. A. Miller (p. 431, ph 
xlvi); D. facetus (olim Batocr.) Miller and Gurley, redescr. (p. 418); 
(?) D. gorbyi (olim Batocr.) S. A. Miller’s description translated (p. 426) ; 
D. gurlcyi (olim Batocr.) S. A. Miller non Rowley & Hare, redescr. 
(p. 422, ph xxxiv); D. indianensis, redescr., arm-branching discussed 
(p. 415, pis. xxxii, xxxv); n. var. simplex, Keokuk group, Crawfordsville, 
