.REPORT ON THE MYZOSTOMIDA. 
79 
Finally, I must say that two specimens of Myzostoma which I had in my possession 
were so badly preserved that it was impossible for me to give an exact description of them, 
nor could I determine with any certainty their affinity with any of the described forms. 
The first was taken from Antedon tuberosci, P. H. C. (No. 92), dredged at Station 210 of 
the Challenger Expedition (Philippine Isles), the second from an Antedon also (No. 21), 
from Station 219 of the “Blake” Expedition; this last specimen had some likeness to 
Myzostoma cirriferum. 
A third species, belonging to the Copenhagen Museum, was spoiled before I could 
examine it. It came from a small form of Antedon from Wladivostock (Russian 
Amurland). 
LIST OF THE MYZOSTOMIDA HERE DESCRIBED, ARRANGED ACCORDING 
TO THE SOURCES WHENCE DERIVED. 
(Those marked with an asterisk were only obtained from the source under which they are mentioned.) 
Challenger Expedition. 
Myzostoma horologium. * 
labiatum.* 
echinus, 
gigas. 
calycotyle* 
compressum* 
wyville-thomsoni* 
dentatum.* 
fimhriatum * 
jissum .* 
intermedium .* 
quadrifilum * 
quadricaudatum. * 
filiferum* 
coronatum* 
folium.* 
asymmetricum. * 
pentacrini.* 
deformator .* 
tenuispinum. * 
willemoesii* 
inflator. 
murrayi. 
Stelechopus hyocrini .* 
Total 24 (20). 1 
1 i.e., Twenty-four species in all, twenty of wb 
Dredging Expedition of the U.S.S. “ Corvin,” 
“ Bibb,” “ Hassler,” and “ Blake.” 
Myzostoma longipes. * 
testudo .* 
marginatum .* 
brevipes .* 
areolatum .* 
pidum .* 
crenatum. 
vastum. 
agassizii* 
excisum. 
irregulare. 
caribbeanum .* 
rotundum .* 
oblongum.* 
abundans.* 
elegans. 
bicaudatum* 
filicauda* 
carinatum. 
cysticolum .* 
inflator. 
murrayi. 
Total 22 (14). 
belong exclusively to the Challenger Expedition. 
