ECHINODEHMATA. 
643 
Ophionephthys, g. ii. (Liitken, 1. c. pp. 25 and 29), disco dccies inciso, 
niolli, scutis et sciitellis radialibiis, oralibus, adoralibiis, genitalibus, mar- 
ginalibusque et acervis sqiiamarum qiiinque in dorso disci, scutorum radia- 
lium partes introversas circiimdantibus, exceptis, niido ; brachiis longissimis 
teniiibus, scutellis spinisqiie bracbialibus 4-6 iit in Amphiuris instructis ; 
papillae ambiilacrales singulre adsimt, orales iitrinque 2 vel 3, infradentali 
interna ab externa vel externis duabus intervallo sejuncta. O. limicola^ 
n. sp., Ltk., St. Thomas, W. I. 
Ophionema^ g. n. (Liitken, 1. c. pp. 27 and 28), disco omnino molli, nudo 
scutis radialibiis angusiis genitalibusquo solis exceptis 5 papillis oralibus infra- 
dentalibiis binis, externa vulgo utrinqiie singula, spinis bracbialibus 4-6, pa- 
pilla ambulacrali nulla. Differt ab OpliiopeUi squamulis disci nullis et spina 
brachiali securiformi nulla. O. intricatay n. sp., Ltk., hab. cum prsece- 
dente, 
Ophioconis, g. n., for Pectinura forbesi (Heller), Liitken, pp. 31 & 98. 
Ophiopsammiis, g. n., for Ophiopeza yoldiij Ltk., Liitken, pp. 31 98. 
Opliiochcday g. n. (Liitken, pp. 31 & 98), differt ab Ophioderma rimis geni- 
talibus simplicibus (decern), incisuris disci ad basin brachiorum nullis, disco 
Iitrinque setis gracilibus brovibus (non granulis) dense obtecto ; scuta radialia 
obtecta; cetera Opliiodermcc. O. setosa, n. sp., Ltk., Fiji Islands. 
Amphipholis Jissa, sp. n., Ltk. 1. c. p. 99, Amur. 
Ophiarachna nffinis, sp. n., Ltk. 1. c. p. 99, Fiji. 
Ophiomastix mixta, sp. n., Ltk. 1. c. p. 100, Samoa and Fiji Islands ; O. 
aspertda, sp. n., Ltk. 1. c. p. 100, Fiji j O. caryophyllata, sp. n., Ltk., p. 100, 
Fiji. 
Ophiomyxa australis, sp. n., Ltk. 1. c. p. 99, Bass’s Straits. 
Ojdiioco7na canaliculata, sp. n., Ltk. I c. p. 99, Bass’s Straits. 
Ophiacantha pmtacrinus, sp. n., Ltk. 1. c. p. 99, Antilles, on Pcntacrinus 
miillnri. 
Ophioth'ix striolata, sp. n., Grube, Liitken, 1. c. p. 99, New Guinea, China 
Sea ; O. elegans, sp. n., Ltk. 1. c. p. 99, China seas ; O. trilhieata, sp. n., 
Ltk. p. 100, Samoa Islands ; O. capensis, sp. n., Ltk. p. 100, Cape of Good 
Hope, on Gorgonise. 
Asterias tricolor, Abgd. Liitken (1. c. p. 47) demonstrates that this must 
be a species of Ophiacantha and not of Ophiothrix, as was formerly thought, 
which inhabits the southern coasts of Norway, and that the Ophiactis clavi- 
gera of Ljungman, found in the same locality and at a great depth, is very 
certainly none other than the A. tricolor, and should be quoted as Ophiacantha 
tricolor (Abgd.). He also expresses a wish that the ‘‘ Ophiocoma granulata,'^ 
found by Dr. Wallich at a depth of 1260 feet in the Atlantic, should be 
again examined to see whether it may not also be this species. 
Ophiothrix fragilis, Abgd., of the North Sea, is not, as is generally thought, 
to be met with in the Mediterranean, but is there replaced by two species, 
O. echinata, from the Adriatic, and O. quinquemacidata (D. Ch.), from the 
Gulf of Naples. Liitken, 1. c. p. 61. 
Ophiocoma occllata. Martens, is Ophiarachna incrassata (Lmk.). The genus 
Ophiarachna would appear to embrace two very distinct types — one repre- 
sented by this species, which recalls to mind somewhat the genus Ophiocoma, 
the other embracing O. gorgonia &c., approaching Ophioderma, for which 
Forbes’s name, Pectinura, has the priority. Liitken, 1. c. p. 31 &c. 
