23 Echin. 
Systematic — Crinoidea. 
1031 
Ophiocten squamosum sp. n. Chile, 
Clark Proc. Biol. Soc. Washington 30 
p. 157 ; 0. sericeum, Grieg 62. 
Opliioderma pentacantha sp. n. Gala- 
pagos Is., Clark Bull. Mus. Comp. 
Zool. Harvard Coll. 61 p. 443 ; O. 
panamensis, annulata nervous system, 
Hilton 76. 
Ophiodermatidae, Matsumoto 107. 
Opkiodermalinae , Matsumoto 107. 
Ophiogeron , Clark 28. 
Ophioglypha ambigua, brevispina, 
Koehler 89. 
Ophiolepididae, Matsumoto 107. 
Ophiolepidinae, Matsumoto 107. 
f Ophiolapis damesii , Embrey 45. 
Ophioleucidae, Matsumoto 107. 
Ophiomastix bispinosa sp. n. Paumotu 
Is., Clark Bull. Mus. Comp. Zool. Har- 
vard Coll. 61 p. 442. 
Ophiomusium with O. canaliculatum 
p. 448 Pacific, tripassalotum p. 451 
Paumotu Is., spp. n., Clark t.c. pp. 
448-452. 
Opliiomyxa brevirima, Bell 10 ; O. 
australis , Clark 27. 
OpUiomyxinae , Matsumoto 107. 
Ophionereis schayeri , Clark 27 ; O. 
larva, Mortensen 111 ; O ., Clark 28. 
Ophiouotus hexactis , Koehler 89. 
Ophiopezella , Clark 28. 
Ophiopholis aculeata, Grieg 62. 
Ophiophthalmus gen. n. of Ophiacan- 
thidae typo Ophiacantha cataleimmoida 
Clark, Matsumoto J. Coll. Sci. Tokyo 
38 (2) pp. 93, 106. 
Ophiopteron alatum sp. n. North 
China, Clark Proc. Biol. Soc. Washing- 
ton 30 p. 13. 
Ophiosemnotes gen. n. of Ophiacan- 
thidae type Ophiolebes tylota Clark, 
Matsumoto J. Coll. Sci. Tokyo 38 (2) 
pp. 93, 135. 
Ophiosteira koehleri sp. n. Ecuador, 
Clark Proc. Biol. Soc. Washington 30 
p. 173 ; O. antarctica figd., Bell 10. 
Ophiothamnus , Matsumoto 107. 
Ophiothela hadra, Clark 27. 
Ophiothrix , Clark 27, 28 ; O. fragilis 
larva, Mortensen 111. 
Ophiotrichidae , Matsumoto 107. 
Ophiolypa , Clark 28. 
Ophiozonella , Clark 28. 
Ophiura with O. slCnobrachia p. 446 
sp. n. Eastern Pacific, Clark Bull. Mus. 
Comp. Zool. Harvard Coll. 61 pp. 445- 
448 ; O. robusta, Grieg 62. 
Ophiuroidea , B. 2. 
Ophiurothamnus gen. n. of Ophiacan- 
thidae type Ophiomitra dicycla Clark, 
Matsumoto J. Coll. Sci. Tokyo 38 (2) 
pp. 94, 129. 
Pectinura dyscrita , Clark 27. 
Phrynophiurida , Matsumoto 107. 
Trichasterinae, Matsumoto 107. 
F. Crinoidea. 
Amphimetra crenulaia , Clark 27. 
Antedon , Bell 10. 
f Antedon with A . minutissimus p. 169, 
janeti p. 170 ,courvillensis p. 172, spp. n., 
Senonian France, Valette Bull. Soc. 
Sci. Yonne 70 pp. 165-174. 
\ Aiactocrinus, Bather 5. 
f Balanocrinus doliolum, epensensis , 
minutus , senonensis spp. n., Senonian 
France, Valette Bull. Soc. Sci. Yonne 
70 pp. 145, 147, 149, 161 ; B. didaclylus , 
subbasalliformis (— sowerbyi Wetherell 
Ms.) figd., Bather 7. 
]Bursacrinus, Macnair 104. 
Comantheria intermedia sp. n. Japan, 
Clark Proc. Biol. Soc. Washington 29 
p. 105. 
Comanthus perplexum, plectrophorum y 
spanoschistum spp. n. Australia, Clark 
Biol. Results of F.I.S. Endeavour 4 pp. 
14, 15, 17. 
Comatula crater a sp. d. Australia, 
Clark t.c. p. 12. 
Cortuometra incommoda, lovevi t 
Clark t.c. p. 26. 
t Conocrinus lamberti, welschi spp. n. 
Senonian France, Valette Bull. Soc. 
Sci. Yonne 70 pp. 113, 115. 
Cosmiometra dasybrachia sp. n. Aus- 
tralia, Clark Biol. Results of F.I.S. 
Endeavour 4 p. 24. 
f Cyathocrinus pinnatus (?), Faura y 
Sans 46. 
Dicliom,etra dofleini sp. n. Japan, 
Clark Proc. Biol. Soc. Washington 29 
p. 106. 
