178 
Ou 09 BS 
— 
SODNIAAP WHE 
foal 
—_ 
DISTRIBUTION OF BRITISH ECHINODERMS. 
(2) Incompletely known. 
Cucumaria fucicola. 
andrewst. 
. Thyone flecus. 
elegans. 
. Colochirus andersoni. 
(3) Deep-water forms. 
. Stichopus tizardt. 
. Holothuria aspera (single specimen). 
. Astropecten sphenoplax (diagnosed in 1892). 
. Bathybiaster vexillifer (single specimen). 
Pentagonaster greeni (single specimen). 
. Mimaster tizard. 
. Rhegaster murrayt. 
. Cheilaster fimbriatus. 
. Lasiaster villosus. 
. Pteraster personatus (described in 1891). 
. Hymenaster giganteus (described in 1891). 
12. Odinia pandina. 
= 
OO 
. Ophiochiton ternispinis. 
. Ophiobyrsa hystricis. 
15, Ophiomyxa serpentaria. 
eS 
a en) 
Of the third category it may be confidently predicted that some 
of the species will be found to be synonyms of others already 
described, and that the range of most will be extended by future 
. Cidaris purpurata. 
gracilis (‘probably immature” ; described in 1891). 
dredgings in deep water. 
Tasie I11.—List of British Echinoderms, arranged by grades of 
Not known 
beyond 
10 fms. 
20 fms. 
30 fms. 
40 fms. 
50 fms. 
60 fms. 
70 fms. 
80 fms. 
90 fms. 
100 fms. 
Depth from above downwards. 
Number 
of Species. 
Strongylocentrotus lividus’. 5.2.5 os oseles ee eclen «see ' 
Holothuria nigra, Ophiocnida brachiata..... 0... 0602 eee 2 
Synapta buski, Cucumaria planci, Palmipes placenta...... 3 
Asterina gibbosa, Spherechinus granularts. ... 0.00. ccc 2 
Cucumaria pentactes, C. lactea, Amphiura securigera, 
Ophiopsila .annulosa, Echinus miliaris... 6... ees 5 
OpROTTBOTTAGUIS . 50) avn eh oy Sine Cine alee ee i! 
Phyllophorus pellucidus, Asterias glacialis, A. murrayt 3 
Synapta digitata, Thyone fusus, Phyllophorus drummondi. 3 
Luidia ciliaris, Ophiocoma nigra, Echinocardium cor- 
CAROL Os 65 TI AS Os SOEUR TOES oe oC one 3) 
Synapta inherens, Antedon bifida, A. petasus, Ophiura 
CONGIATE Merteteel oc sc 28 sales cea chen ere ee eer eee 
