516 
ECHINODERMATA. 
Ophionephthys (?) phahrata^ sp. n.,p. 229, pi. vi. figs. 7-9 (Philippines); 
Lyman, 1. c. 
OpMopsammium^ g. n. (nearest allied to Ophiothela) [the name can 
hardly be retained, because of its resemblance to Ophiopsarnmus, Ltk.]. 
Numerous tooth-papilla) arranged in a vertical mass, as in Ophiotlirix ; 
no mouth papilla) ; disc and arms naked below, closely granulated above ; 
arm-spines stout, thorny, on a crest-like arm-plate, as in Ophiothrix ; 
tentacles long, covered with papillae and issuing from the sides of the 
arms, which have a tendency to roll on themselves, as in Ophiochondrus. 
O. semperi, sp. n., id. 1. c. p. 232, pi. iv. figs. 11-17. 
Ophiocnemis ohscura^ Ltk., is not Ljungman’s species, but 0. {Ophiomazd) 
cacaotica ; id. 1. c. p. 233. 
Notes are given on Ophiothrix comata^ M. Tr. (1. c. p. 233, pi. iv. 
figs. 27 & 28 ; allied to 0. suensoni, but apparently distinct) ; 0. fa- 
maria, M. Tr. (pi. iv. figs. 33-36) ; 0. ciliaris, M. Tr. (pi. iv. figs. 29- 
32) ; 0. aspidota, M. Tr. (p. 234) ; 0. propinqua, Lym.,* wrongly described 
by the Recorder as the young of 0. longipeda ; 0. clypeata, Ljgm., is 
the young of an Ophiocnemis {marmorata ?). The following new species 
are described : — 0. martensi, p. 234, pi. iv., pusilla, p. 235, pi. hi. figs. 21- 
30, exigua, p. 236, pi. iv. figs. 24-26, and plana, p. 238, pi. iv. figs. 1-8 
(Philippines) ; stelligera, p. 237, pi. hi. figs. 15-20 (Philippines and 
Borneo); radis,p. 339, pi. hi. figs. 11-14 (California). After a critical 
discussion of the European species, eight typos are pointed out, of which 
five or six however are doubtful: — 1, Ophiothrix fragilis (Abgd.), = 
0. rammelshergi, M. Tv., alha, Gv. (Scandinavia, Fsero, Iceland); 2, O. 
quinquemaculata, (d. Ch.) Ltk. (Mediterranean) ; 3, 0. echinata, M. Tr. 
(Mediterranean) ; 4, 0. alopecurus, M. Tr. (Adriatic) ; 5, 0. pentaphyllum, 
(Put.) Ljgm. (British and French shores) ; 6, 0. lusitanica, Ljgm. 
(France, Portugal, Madeira); 7, 0. maculata, Ljgm. (Josephina Bank) ; 
8, 0. luetheni, W. Th. (Atlantic, abyssal). Lyman (10). 
Astrophyton cacaoticum, p. 250, pi. vi. figs. 1-3 (Guadeloupe), nudum, 
p. 251, pi. vi. figs. 4 & 5 (Philippines) ; id. 1. c. spp. nn. 
The likeness in external appearance, colours, &c. (“ mimicry ”) of 
Hemieuryale pustulosa and Gorgonella guadelupensis, d. M., on which it 
lives, is commented upon by Mobius, Schr. Ver. Schlesw. Holst, i. 
pp. 204-206). 
An abstract of the Recorder’s paper on new or little known Ophiuridat 
[1872, Zool. Rec. ix.] is given in J. Zool. ii. pp. 444-450. 
Crinoid^. 
Ilolopus rangii, d’Orb. (ten-armed), and Rhizocrinus rawsoni, Pourt. 
(fearbadoes', are figured and shortly described byPourtales (2), pp. 51-52, 
& 27-31, pis. x. & V. In Ilolopus, the mouth is surrounded by five 
triangular plates, by which it can apparently be almost or entirely 
closed ; an “ anal ” plate was visible, but no opening could be detected 
near it ; sutures could not bo ascertained in the lateral body-wall; some 
details are figured, for comparison, of R. lofotensis from Florida ; it is 
here always 5-armed, and no enlarged upper stem-joint has, as supposed 
