No. 392.] THE HOPKINS SEASIDE LABORATORY. 631 
shore life, but area for area, the collecting ground about the 
Hopkins Laboratory is probably unapproached by any spot on 
the Atlantic coast. A well-known and experienced biologist 
of the University of Chicago, who spent a summer at the 
Hopkins Laboratory, has said that Monterey Bay and the Bay 
of Naples are much alike in the abundance and representation 
of species. It will be of interest to naturalists to be told in 
some detail of the actual faunistic conditions of the bay and 
ocean shore near the Hopkins Laboratory. The laboratory has 
been long enough established, and the observation and collect- 
ing diligently enough prosecuted, to make it possible to under- 
take this with some confidence. For the statements regarding 
the invertebrate fauna, I am presenting very largely the obser- 
vations of Mr. Harold Heath, assistant professor of zodlogy in 
Stanford University. 
' The sponges are extremely abundant; in certain localities 
they encrust the rocks over a large area. There can be no 
less than thirty species represented. Among the hydroids two 
or three species also are very numerous, literally covering the 
rocks at extreme low-tide mark. Sea anemones are plentiful. 
Certain forms which cover themselves with shells and stones 
occur between tide marks closely packed together to the 
number of many thousands. Annelids are numerous, as are 
certain star worms (Gephyrea), but the vermian class has been 
as yet little studied. A species of Cirratulus, which lives in the 
cracks of the rocks, extends its long, thread-like tentacles up 
through the sand, so that in their abadot and massing they 
look like tufts of delicate seaweed. 
Certain groups of mollusks are unusually well represented. 
Four or five species of Haliotis are abundant, and are used for 
food by the Chinese. Many are dried and shipped to China. 
Limpets are particularly well represented, as also are the nudi- 
branchs, of which thirty or forty species have been noted. 
About thirty species of Chiton have been found, among them 
the giant Cryptochiton, six to ten inches long, the only one 
of the group with a concealed shell. Mytilus forms great 
beds at low-tide mark, and is used to some extent as food. 
Among the cephalopods certain species of Loligo are so abun- 
