ANNOTATED LIST. 121 
No fewer than 61 specific or varietal names have been used in connection with the 
generic name Ophiocoma, but many of these were listed when the genus was not so 
readily recognized as at present. When proposed by Agassiz, although he mentioned only 
2 species, the limits of the genus were very broad, including all brittle-stars with long, 
mobile arm-spines. In 1840, Miiller and Troschel restricted the name to those forms with 
long arm-spines, in which the spines are smooth, the disk is covered with granules conceal- 
ing the radial shields, there are only 2 genital slits in each interradius, and oral papillae 
are present. In 1842, they recognized the presence and importance of dental papilla and 
defined the genus in such terms that its natural limits are made quite clear; of the 18 
species they list, however, 7 are not Ophiocomas, even according to their own diagnosis. 
In spite of Miller and Troschel’s work, many subsequent authors ignored their delimita- 
tion of Ophiocoma and referred to it species which lack dental papilla, and for this, or some 
equally evident reason, are not members of the genus. Including Miiller and Troschel’s 
7 species, just referred to, some 22 brittle-stars which are not Ophiocomas have been 
assigned to the genus; their true position is indicated in the following list: 
Ophiocoma arctica Miiller and Troschel, 1842 =Ophia- 
cantha bidentata (Retzius). 
Thompson, 1840=Ophiactis 
(Thompson). 
bellis Forbes, 1839 (Ophiura bellis Fleming) = 
Ophiopholis aculeata (Retzius). 
bidentata Miller and Troschel, 1842 =Ophia- 
cantha bidentata (Retzius). 
brachiata Forbes, 1841=Amphiocnida bra- 
chiata (Montagu). 
didelphys Wyville Thomson, 1876 =Ophia- 
eantha vivipara Ljungman. 
echinulata Forbes, 1852 =Ophiacantha biden- 
tata (Retzius). 
filiformis Forbes, 1841 =Amphiura filiformis 
(O. F. Miiller). 
goodsiri Forbes, 1841 =Ophiactis ballii 
(Thompson). 
granulata Forbes, 1839 (Ophiura granulata 
Fleming = Ophiacantha  spherulata 
(Pennant). 
isocantha Miiller and Troschel, 1842 =Ophio- 
stigma isacanthum (Say). 
ballii ballii 
Ophiocoma minuta Forbes, 1839 = Ophiothrix fragilis 
(Abildgaard). 
neglecta Forbes, 1839 (Ophiura neglecta 
Johnston) = Amphipholis squamata 
(Delle Chiaje). 
nigra Miiller and Troschel, 1842 (Asterias 
nigra Abildgaard) = Ophiacantha sphe- 
rulata (Pennant). 
nillsoni Miller and Troschel, 1842 =Ophia- 
cantha spherulata (Pennant). 
ocellata von Martens, 1867=Ophiarachna 
incrassata (Lamarck). 
papillosa Lyman, 1875=Ophiopteris papil- 
losa (Lyman). 
picta Miiller and Troschel, 1842 =Ophiar- 
thrum pictum (Miiller and Troschel). 
punctata Forbes, 1841=Paramphiura punc- 
tata (Forbes). / 
raschii G. O. Sars, 1872 =Ophiacantha ras- 
chii (G. O. Sars). 
rosula Forbes, 1839 =Ophiothrix pentaphyl- 
lum (Pennant). 
vivipara Wyville Thomson, 1877 =Ophia- 
cantha vivipara Ljungman. 
In addition to these 22 names, there are 21 others, which, while correctly associated 
with the genus Ophiocoma, do not seem entitled to recognition, since they refer to species 
which have previously received some other valid name. These are as follows, with an indi- 
cation of the correct name to which they are equivalent: 
Ophiocoma alternans von Martens, 1870=scolopendrina. 
brevispinosa Smith, 1876 =brevipes. 
Ophiura crassispina Say, 1825 =echinata. 
Ophiocoma dentata Miiller and Troschel, 1842 =echinata, 
according to Lyman who examined the 
type in Berlin. The original descrip- 
tion indicates brevipes var. insularia. 
dentata Liitken, 1859=brevipes var. varie- 
gata. 
déderleini de Loriol, 1899=brevipes var. 
variegata. 
lineolata Miiller and Troschel, 1842 =pica. 
lubrica Koehler, 1898 =scolopendrina juv. 
marmorata Marktanner-Turneretscher, 1887 
=brevipes var. variegata. 
molaris Lyman, 1861 =scolopendrina. 
nigra Michelin, 1863 =erinaceus?, 
Ophiocoma placentigera Liitken, 1856 =pumila. 
sannio Lyman, 1861 =pica. 
serpentaria Miiller and Troschel, 
echinata. 
Ophiura squamata Lamarck, 1816, is probably based on 
a specimen of brevipes, but as there is 
some room for doubt, and the locality 
is given as the Atlantic Ocean, it is not 
permissible to use the earlier name. 
Ophiocoma tartarea Lyman, 1861 =erinaceus. 
tenuispina de Loriol, 1894=brevipes var. 
insularia. 
ternispina von Martens, 1870=brevipes var. 
insularia. 
tumida Miiller and Troschel, 1842 =echinata, 
variabilis Grube, 1857 =scolopendrina?. 
valentie de Loriol, 1894, p. 29 =valencix, 
1842 = 
