74 THE NAUTILUS. 
tensis covered the leaves and branches of these bushes, the varieties 
being the yellow and five banded. On the ground Pyramidula 
alternata, Polygyra albolabris and Succinea obliqua were abundant. 
We obtained the famous wine colored variety of P. albolabris, and 
among the specimens discovered a set banded with fine lines, like 
P. multilineata. Time was precious and we collected expedi- 
iously as the tide was coming in. We escaped from the island with 
a slight ducking from the surf, but happy are the results. On Green 
island a few specimens of H. hortensis were found, among them 
two full grown forms, which had for some reason started to grow 
again; extending from the finished lip was a continuation of the outer 
whorl, but of a dirty cream color and rough with ridges. On one 
of the islands Frank discovered the home of the albino P. alternata, 
a valuable prize. Shore collecting gave us a beautiful series of the 
various varieties of Purpura lapillus, and some of the specimens were 
the largest we haveseen. Wealso found Buccinum, Skenea planorbis, 
Turtonia minuta, Rissoa aculeus, Lacuna vinecta, and the common 
shore varieties. Considerable time was given to dredging in depths 
from seven to twenty-five fathoms. One summer is far too short to 
exhaust this region, but many localities were dredged with good 
results. A dozen to fifteen new forms were added to the cabinet, 
and at least fifty duplicate sets, to represent the Bay, found places in 
the collection. Five species of chitons were found, including Amzeula 
Emersonii; a few fine specimens of Pecten magellanicus were dredged, 
among them one that had received an injury and in repairing had 
turned the edges of both valves upward so that they grew at right 
angles to the natural plane. The interesting genus Bela revealed a 
half dozen or more species, harpularia being the most abundant. 
Brachiopods were found occasionally, and sponges, shrimp, echino- 
derms and other invertebrates were abundant, but with much regret 
at not having the means to care for them they were returned to the 
sea. A list of results would contain all of the common forms. The 
more rare species included the genera Thracia, Astarte, Nucula, 
Modiolaria, Crenella, Cylichna, Margarita, Odostomia, Lunatia, 
Velutina, Astyris and others. 
Since the above article was written I have read with much interest 
the article on “ Helix alternata” by Mr. Ormsby. I do not wish to 
take anything from his statements, but to add one or two concerning 
that species. The islands of Casco Bay are good to stand a man on 
his head, figuratively if not literally, for he meets with circumstances 
