912 GLACIAL BOULDERS OF OUR FISHERIES.—-HONEYMAN. 
Geological Formation underlying our Fishing Banks as rather 
allied to the First division of its Glacial Boulders—as Lower 
Cambrian. 
(Appendia). 
We would add a few notes to the Paper read which will bring 
under notice other invertebrates not attached wholly to boulders. 
We are indebted to others for those already noticed. The 
succeeding have been collected in our walks around the shores 
of Point Pleasant. It is many years since we first noticed 
sponges with other attachés on the “so-called roots,” of the 
great quantities of Laminaria and other large algze cast ashore 
by the sea after storms which had torn them from the rocks to 
which they had been attached. Heretofore, we regarded these as 
of no peculiar interest. Choice specimens of the sponges were, 
however then collected, put in proper jars with alcohol, and placed 
in the lowest position in ourAlcoholic Collection. These sponges are 
associated with, and sometimes almost enveloping, large specimens 
of Modiolus modiola, Mytilus edulis. The calcareous alga 
Corallina officinalis very often accompanies these Saxicava old 
and young. The hydrozoa, campanularia and sertularida, bryozoa 
and spirorbes also abound. Gammari swarm. Clusters of the 
egg capsules of Purpura lapillus and the univalve itself are 
found often enough in connection, and the Littorina littorea of 
allsizes. Since we became interested in the sponges, by the discov- 
ery of their siliceous character and the beauty of their skeletal and 
somal spicules and incorporated diatoms and radiolarians, we have 
often explored the piles of kelp after storms and made a large 
collection of the objects described, especially the sponges. 
In this kelp I found, many years ago, when searching for 
marine objects of interest, a densely reticulated alga with the 
spawn of small fish newly developed. Putting it into a small 
bottle having alcohol, I observed a number of small, oval sponges. 
One of these 1 have just examined, and found it to be a Mywilla. 
I have given it the specific name pisciniae. 
I would, in conclusion, notice the valve of a modiola. This 
has attached to it, a bunch of a beautiful alga, and an interesting 
