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in the distal than in the proximal part; outside the disk they are 
in contact merely with the point. Only one small tentacle scale. 
The dorsal plates are transverse oval with an obtuse point in- 
wards, not in mutual contact. Three subequal armspines, about as 
long as an armjoint. Colour of the dried specimens white. 
The larger specimen, measuring 4 mm diameter of disk, has 
all five arms broken; in the smaller specimen, 3 mm diameter of 
disk, the arms are aboiit 5—6 times the diameter of disk. 
Fig. 24 Amphiura hinemoæ Mrtsn. — a. Part of oral side ; — b. part of mouth and 
proximal armjoint of smaller specimen ; — c. part of dorsal side ; —• d. two armjoints 
from middle of arm, dorsal side. i®/i. 
The eggs are not large, 0,i5 mm. Apparently they do not all 
ripen at the same time, which might well indicate that the species 
has not typical pelagic larvæ. However, the material in hånd is 
I rather too insufficient for giving this conclusion a reasonably firm 
base. 
Among the small group of Amphiuras with one tentacle scale, 
j three spines and naked underside of the disk A. seminada Ltk. & 
Mrtsn. and A. carcham H. L. Clark, both from the North Pacific, 
are evidently nearly related to the present species. From the former 
(known only from the mouth of the Gulf of California) it is 
distinguished through the dilferent shape of the outer mouthpapilla 
. (spiniform in seminuda), through the different shape of the radial 
shields (broadly joining in seminuda) and through the primary plates. 
