210 GLACIAL BOULDERS OF OUR FISHERIES.—HONEYMAN. 
also perforated by Saxicava. Two of these occupy cavities. 
There are no other attachés in this and the preceding. 
(T.) Is also a limestone boulder of considerable size. It is 
thoroughly perforated by Saxicava. The top and circumference 
are covered with Nullipores. “Two algve, one of which is Corallina 
officinalis, a lime former, occupy a large part of the nullipore 
covered top. Several ophiurze occupy holes. The hammer 
shows the boulder to be Lower Carboniferous limestone. 
Boulder (U.) Has attachés, Terebratulina septentrionalis in 
abundance—young and old. The latter are coated with the usual 
sponge, a Myzxilla, sessile foramenifera, hydroida, a large Serpula 
tube, an ophiwra, specimens of Chiton ruber. It is of Lower 
Carboniferous limestone. 
(V.) Another L.C. limestone boulder. This is well perforated 
by Saxicava. The greater part of the cavities is occupied by 
Ophiurans, old and young. This is by far the greatest number 
found in any boulder. I have not yet attempted to specialize 
them. All our Ophiurans, or brittle stars, have the usual number 
of 5 rays. An exception will be noted in a future paper. This 
has 6 rays. I simply refer to it in this connection as a notice. 
Other attachés of our boulder are Serpulini, Spirorbes, Bryozoa, 
Corullines, Foramenifera, Incerte Sedis. 
(W.) the last boulder to which I would refer. It is the 
last addition to the Museum collection. The fisherman from 
whom it was purchased informed me that it came from the 
banks, and from a depth of 65 fathoms. It is of Lower Carbon- 
-iferous Limestone, and is thoroughly bored with Saxicava. Some 
of these occupy under cavities. Ophiurans have taken possession 
of others. The upper side of the boulder is covered with 
nullipores. 
Two interesting sponges are seated on the nullipores. Of these, 
the smaller is of dark brown colour, it isa Myxilla. The larger 
is different in appearance from all the other sponges in our 
collection—it is a Reniera. 
I received from Mr. Wilson, Fish Merchant, a splendid specimen 
of Boltenia rubra from our fishing banks. It was detached from 
the stone to which it had been attached. Its stalk is 12 inches 
