in the Gulf of St. Lawrence. 217 
fifteen or twenty fathoms, the summer temperature is high, 
being affected by surface conditions. Three small specimens 
of Echinocucumis typica M. Sars were collected here, as well as 
examples of *Molgula papillosa V. and M. producta St. On the 
ilne Bank we dredged quantities of the common Hehinarach- 
mius ; an abundance of fine Hydroids and Polyzoa; a few 
shells; and some small algve. 
Between Cape Bear and Pictou Island the bottom is sandy, 
with shells and a few small stones. Three kinds of sponges 
were collected here, many hydroids, echinoderms (all common 
forms), annelids, crustacea, and tunicates. Among the latter 
are specimens of * Molgula littoralis V. Shells were particularly 
abundant, among them are Pecten tenuicostatus, Modiola modiolus, 
Crenella nigra, Astarte undata Gould, Cyprina Islandica, Callista 
convexa, Pandora trilineata?, Orepidula fornicata, Lunatia tri- 
seriata, Mamma immaculata, and several species 0 
The fauna of the region north of Pictou, between the west 
coast of Cape Breton and the east of Prince Edward Island, is 
essentially of an Acadian type. To the north, northwest, and 
west of Cape Breton, the deep water assemblage has probably 
an Arctic character. 
n the marine slip at Pictou, I collected specimens of Teredo 
navalis and T. Norvegica, burrowing into the black birch of 
which the roller frames of the cradle are composed. t Souris, 
(Prince Edward L), the common periwinkle of England (Litto- 
rina littorea) was plentiful, and it was subsequently observed at 
Charlottetown. An Argulus, closely allied to A. Alose of Gould, 
if not identical with it, was taken off Pictou Island, in towing 
nets, attached to Gasterosteus biacul-atus? and other small fishes. 
Idotea trrorata Say, was common on the surface at the same 
place, and was subsequently obtained at Shediac Bay, and else- 
Where. On the shores of the Magdalen Islands it is tolerably 
common. 
Chene f ailed ourselves of the opportunity to 
e tor two days, we availed ot Fe Wathen bods, from 
¢ Ba eds, fro 
low water mark down to three fathoms, the following species 
were met with: 
MOLLUSCA. 
Cancer irroratus “Say. Ostrea borealis Lam. 
Crangon vulgaris Fab. O. Virginiana Lister. 
mal Mytilus edulis Linn. 
ammarus ornatus . 2 solus La 
Idotea irrorata Say. Modiola modiolus Linn. 
