330 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Opiiiuroidea. 
There are only nine representatives of this group in the entire 
collection ; and, although preserved in alcohol, they are all more or 
less broken and imperfect. 
Ophioglypha liitkeni Lym. 
There are live specimens of this species, varying from 4 to 17 mm. 
across the disc. Only one has the scales on the disc noticeable and 
overlapping, or shows any variegation in the color of disc and arms. 
The others are uniformly smooth and light. 
Ophiopholis caryi Lym. 
There are three specimens of this form, 6, 7, and 9 mm. across 
the disc. Color pinkish purple ; arms slightly banded; under side 
of arms, and ring around mouth, almost white. 
? Amphiura urtica Lym. 
There is one specimen of an Amphiura with most extraordinarily 
long arms. The upper half of the disc is gone, so that it is impos¬ 
sible to determine its original size or decide positively to what 
species the specimen belongs.* At the present time the disc is only 
G mm. across, while the rays measure 300 mm. Color, in alcohol, 
light yellowish gray. I suspect that this is an undescribed species, 
but it seems better at present to consider it simply as a mutilated 
specimen of urtica. 
/ 
% 
Eciiinoidea. 
Although none of the Eciiinoidea in the collection are new to 
science, several of them are of interest because their occurrence in 
Puget Sound considerably extends their known geographical range. 
All of the ecliinoids before me are dried specimens. 
