CHAP. 1V.] THE CRUISES OF THE ‘ PORCUPINE,’ 185 
throughout the globe! We believe, however, that a 
thorough examination of the newer Tertiaries would 
materially assist us in the inquiry; and such exami- 
nation is feasible and comparatively easy. Much 
good work has been done in this line; but although 
the researches of Broecchi, Bivona, Cantraine, Phi- 
lippi, Calcara, Costa, Aradas, Brugnone, Seguenza, 
and other able paleeontologists in the south of Italy 
have extended over more than half a century, and 
are still energetically prosecuted, many species of 
molluscous shells are continually being discovered 
there, and have never been published. Besides the 
Mollusca in this dredging from 994 fathoms, Pro- 
fessor Duncan informs us that there are two new 
genera of corals, and /labellum distinctum, which last 
he regards as identical with one from North Japan. 
It coincides with the discovery on the Lusitanian 
coasts of two Japanese species of a curious genus of 
Mollusea, Verticordia, both of which are fossil in 
Sicily and one of them in the Coralline Crag of 
Suffolk.” 
In the same dredging there are a number of very 
singular undescribed sponges, many of them recalling 
some of the most marked characters of one of the 
sections of Ventriculates. ‘These will be referred to 
in a future chapter. 
On- Thursday, the 21st of July, dredging was 
carried on all day at depths from 600 to 1095 fathoms, 
lat. 39° 42’ N., long. 9°43’ W., with a bottom tempera- 
ture at 1095 fathoms of 4°°3C. and at 740 fathoms 
of 9°4C. The dredging was most successful ; many 
of the new and peculiar mollusca of the last dredging 
were taken here alive, with several additional forms. 
