THE NAUTILUS. 101 
nary open sailing boat, with a crew of three men and a single home- 
made dredge. I should mention that 15 species were taken both 
between tides and by dredging, so that the actual number of differ- 
ent species taken in the three and one-half days was 156. 
In shore collecting, no attempt was made to collect the very com- 
mon shells in quantity, or the numbers might have been swelled 
indefinitely. In fact, I was looking more especially for Chitons, of 
which I took seven species (183 specimens), and the smaller shells, 
such as Volutella pyriformis Cpr. (40 specimens), and species of 
Odostomia, which occurs commonly under rocks at low water. I 
took also on this occasion a very fine series of Terebratella trans- 
versa Sby., which was found literally in thousands attached to the 
rocks on the south side of the bay. 
Fine series of several Macomas were dug in the sand, and a few 
specimens of the curious Lepton rude Whiteaves were found attached 
(as is their habit) to the central segments of specimens of Gebia 
pugetensis, which we dug out of the muddy shores. 
When dredging, everything that came up was preserved, and the 
finer sand and mud boxed, awd afterward dried and examined at 
home. 
Of the Pelecypoda dredged, by far the commonest specimen was 
Acila Lyalli, of which at least a couple of thousand specimens were 
taken. Another common bivalve was Cryptodon sericatus Cpr., 
about 300 specimens. Venericardia borealis Conrad, Nucula tenuis 
Mont., and Lueina tenuisculpta Cpr., came next in order, about 
100 of each being taken. 
Of rarer shells may be mentioned, Pecten Vancouverensis W hiteaves 
and hastatus Sby., Amusiwm caurinum Gould, Modiolaria levigata 
Gray and nigra Gray, Crenella decussata Mont., Cardiwm blandum 
Gould, Fulvia modesta Ad. and Rue., Cryptodon flecuosus Mont., 
Astarte Esquimalti Baird, and wndata Gould, Psephis Lordi Baird, 
Clementia subdiaphana Cpr., Venus Kennerleyi Reeve, Macoma yoldi- 
formis Cpr., Cuspidaria pectinata Cpr., Kennerlia filosa Cpr., ete. 
Of the Gasteropoda the most abundant were, Nassa mendica Gould, 
Nitidella Gouldii Cpr., Olivella baetica Cpr., Mesalia reticulata Mighels, 
and the deep-water variety of Margarita pupilla Gould, of each of 
which more than one hundred specimens were obtained. 
Of rarer shells the following is a partial list: Drillia incisa Cpr., 
and cancellata Cpr., Mangilia sculpturata Dall, Cancellaria cireum- 
cincta Dall, Velutina laevigata Linn., Turbonilla torquata Gould, 
