H. T. MENNELL ON THE MOLLUSCA. 255 
days’ work are recorded in the third column. §o ended our 
expedition, which was not without its results to science generally 
and greatly added to our knowledge of our local fauna. All the 
specimens obtained were very carefully preserved, and on the re- 
turn of the boat were committed to several gentlemen competent 
in their various departments, to catalogue and report upon. 
Special reports on each branch follow these general remarks, 
and obviate the necessity of further words from me. A tabular 
statement of the whole number of species obtained accompanies 
this paper. 
Besides the scientific results, we may count as very valuable, 
the experience in and the taste for dredging acquired by a number 
of our members, and the consequent impetus given to investiga- 
tions of this nature. 
Report on the Mollusca. By Henry T. Mennell. 
The number of species of Mollusca obtained on the expedition 
was 138, viz:-— 
Ocpnalopodaani Wat: nee 1 
GOSicropoddy an ube erat 66 
Prosobranchiata 53 
Opisihobranchiaia... Sin @ 
Nudibranchiata 6 
Lamellibranchiata. . . . . 60 
JEIROG OUI en — 
MET UCOL ON gos OR oat are aes itl 
138 
A full list of these accompanies my report, in which the com- 
parative rarity of each species, and its occurrence in the three 
different localities dredged, are recorded. 
This renders it only necessary for me to draw attention to a 
few of the more interesting species, and to add a few remarks 
suggested by a study of the list. 
In the first place several species were obtained in such a con- 
