340 PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
but one of these twenty-nine the arms were of very unequal size, 
those with eight and nine having three or four large arms and the 
others quite small. It will be seen from these figures that the star¬ 
fishes from Coney Island average 5.91 arms each, while those from 
Harrington Sound average 6.93. In other words, 82% of those 
from Coney Island had six arms or less, while this was true of only 
24% of those from Harrington Sound. The number of star-fishes 
examined was too small to warrant any conclusions being drawn, 
but the facts are interesting, and make further investigations desir¬ 
able. Of the other star-fishes which I collected, Asterina folium 
was rather common on the under side of rocks at Coney Island. All 
of those seen were blue. A very large specimen of Linckia guil- 
dingii was found under the bridge at Coney Island. It had only 
four arms, and one of these was broken, but the perfect arms meas¬ 
ured 20 cm. long, and 7 cm. in circumference. 
No echinoids except Toxopneustes were found by me, but that 
species is very abundant almost everywhere. Brittle-stars are 
abundant, particularly Ophionereis reticulata , which may be found 
anywhere in the sand. Ophiura appressa was found rather common 
near Coney Island, and Ophiocoma echinata was common at the 
same place and elsewhere. A single small specimen of Ophiocoma 
pumila with six arms was collected under the bridge at Coney 
Island, and in the same locality a very small, sfas-armed Ophiactis 
was found, which I refer with some hesitation to mulleri Ltk. The 
colors are bright green and white, and the specimen agrees exactly 
in this and some other particulars with 0. savignyi Ljn.; but as 
mulleri has been recorded previously from Bermuda, it seems best 
to refer my specimen to that form. The most interesting ophiuroid 
seen was Ophiomyxa faccida, of which a number of specimens 
were collected under the bridge near Coney Island, in three feet of 
water. The largest measured 26 mm. across the disc, and the arms 
were 130 mm. long. The color varies most remarkably. Two 
specimens were uniform tawny orange; others were olive-green, 
the arms banded with darker; one was yellowish green; and several 
had the olive-green disc crossed and marked with dirty white. These 
colors are pretty well kept in both alcoholic and dried material. 
This species was previously known from Bermuda from a single 
specimen, so that its occurrence in some numbers is of no little 
interest. It is a very active animal, and makes its way about among 
the broken slabs of rock Avitli great rapidity. The arms are so brittle 
that it is difficult to capture an uninjured specimen. 
