1890.] A Zovlogical Reconnoissance. 431 
growth. A colony composed of fifty or more, each resembling 
a bright red spot on the rock, was taken by my friend Mr. Owens, 
The young of Crebrella when the arms begin to push out from a 
pentagonal disk do not differ from those of Asterias, but as the 
arms develop it was found that there was no prominent row of 
dorsals, and that the plates were irregularly scattered over the 
back. ; 
The number of individuals of the Echinoidea at Grand Manan 
is very great, but the variety is small. Echinarachnius and 
Strongylocentrotus are the mostcommon. The former were often 
found in such abundance as to clog our dredge, and on the points 
of land at low tide we gathered many on the shore. White 
specimens of Strongylocentrotus were found which resemble in 
every respect the green colored. The boring habits of this genera 
I have already mentioned in a former number of the NATURALIST. 
The gaint among the Holothurians, Pentacta Srondosa, is very 
common at Grand Manan, where it is known as the “sea pud- 
ding.” Cuvieria is rare, but its bright red body may often be de- 
tected as the animal clings by its suckers to the rocks at the line 
oflow tide. This Holothurian is sometimes calledthe “sea orange” 
or “sea lemon.” The very young Cuvieria were found clinging 
to the rocks by two terminal suckers, in which are embedded 
scales composed of an open calcareous lattice-work. Scales or 
perforated plates are also found in the tentacles, which are but 
little branched. - In the younger stages the color of Cuvieria re- 
minds one of a young Actinian. 
The summer of 1889 at Grand Manan was exceptional in the 
variety of animals from southern waters which were collected. 
Among these were Physalia arethusa, and the well-known 
Anatifer which is often so common in Narragansett Bay. <A 
floating half cocoanut, covered with the ordinary “ Goose Barna- 
cle,” was picked in the bay near Gannet Rock. The long voyage 
which this fragment had taken in the waters of the Gulf Stream 
need not surprise one ; but the fact that it was found in the cold 
waters of the Bay of Fundy is an unusualone. All the hydroids 
mentioned by Stimpson, with the exception of Grammaria, were 
collected by us. In place of this problematical genus a beautiful 
