74 THE NAUTILUS. 
ground, becoming rocky. These stretches of hard bottom are often 
the resort of great numbers of Pecten magellanicus, known to the 
natives as “scallops.” This giant among the Pectens is gathered 
somewhat extensively for the markets, but does not make a particu- 
larly dainty dish. It is best colleeted by sinking or draging along 
a fishing-line over the bottom of the scallop beds. The big fellows 
seize the line viciously and permit themselves to be hauled out of 
the water ; unfortunately, adult specimens are usually badly eroded. 
Such stations contain Crenella glandula ; they swarm with Nassa 
trivittata, and seem literally to be paved with Nucula proxima. The 
mud bottom is fairly rich in Lunatia triseriata, Yoldia limatula and 
thracieformis, and again Nucula proxima. Leda tenwisulcata is 
occasionally met. 
Passing out to the open sea the water very gradually deepens, 
and patches of shelly bottom are frequent. These places, made up 
for the most part of broken shells, fine gravel and sand, offer good 
rewards to the collector. Dentaliwm entalis, Turritella erosa, Pecten 
islandicus (dead), Cardium pinnulatum, Astarte sulcata and Tere- 
bratulina septemtrionalis, the latter, invariably imbedded in sponges, 
may be readily obtained. 
Upon the rocks between tides, the usual Litorinas, together with 
Purpura lapilius, are always abundant, a splendid red variety of the 
latter occurring near Otter Cliffs. Just below the low-tide mark, 
Chrysodomus decemcostatus and a degenerate form of Buccinum un- 
datum, range. Their home among the rocks protects them from 
the dredge, but they may be easily tempted by bait. In all rocky 
places of moderate depth the pretty little Margarita undulata, 
tinged with red and iridescent within, can be found. 
On flats, exposed by the receding tide, of which there are a few 
in the vicinity of Mt. Desert, the soft clam, Mya arenaria, lives 
buried several inches below the surface. The number of these 
creatures annually taken by fishermen for bait from the “ Bar” at 
Bar Harbor, figures well into the hundreds of thousands, yet the 
supply never seems to diminish. 
A few dead valves of Arctica islandica indicates the presence of 
this boreal species in the bay. A more thorough examination of the 
depths of the harbor would undoubtedly reveal many more interest- 
ing things to the explorer than I came across in my two or three 
moderately successful dredging expeditions at Bar Harbor last 
summer. 
