on the Coast of New England. 135 
ing, perhaps, a few southern species that do not occur in the 
latter locality ; though owing to the fact that we could spen 
ut a few hours at this place, our collection is doubtless quite 
incomplete. On the other hand, we have, with the exception of 
the shells, very imperfect lists of the southern species inhabiting 
the colony in the Gulf of St. Lawrence, so that a complete com- 
parison cannot be made, at “present, except with the shells; 
these agree very closely, according to the lists given by Daw- 
son, : iteaves. 
s the existence of these isolated southern colonies has an 
important bearing upon the question of former changes of cli- 
mate on our coast, and as other facts, to be mentioned further 
on, are intimately connected with them, I give here a list of the 
species obtained by us, in the cove referred to, so far as they 
have been identified. 
List of species collected at low-water in a small cove at the upper 
end of Quahog Bay. 
Those with an asterisk prefixed are decidedly southern species, belonging prop- 
erly to the region south of Cape Cod. 
ARTICULATA, 
Crustacea. 
Cancer irroratus, Gammarus ornatus. Limnoria lignorum. 
*Eupagurus longicarpus. |Amphithoé, sp. *Argulus, sp. 
Crangon vulgaris. *Epelys trilobus Smith | *Limulus Polyphemus. 
*Mysis stenolepis Smith. |Idotea irrorata. 
Balanus balanoides. 
ww 
Annelids. 
Lepidonotus squamatus. |*Rhynchobolus dibranchia-| Fabricia Leidyi- 
Nephthys ingens. Spirorbis borealis. 
Nereis virens. 
Turbellaria. 
*Meckelia ingens. |Nemertes viridis. |*Nemertes socialis. 
OLLU 
Gastropods. 
cinerea, pidula conve: 
Purpura lapillus. *C. forni Lacuna vincta. 
“ily anassa obsoleta. *C, plana. Rissoa aculeus. — 
Tritia trivittata, Littorina rudis. Acmeea testudinalis. 
Natica heros, 
Lamellibranchs. 
Saxicava arctica, [Macoma ilis. *Modiola plicatula. 
Mya arenaria. *Petricola pholadiformis. | Anomia aculeata. 
*Venus mercenaria. | Mytilus edulis. | 
ryoz0a 
Alcyonidium hispidum. | Alcyonidium hirsutum. 
RADIATA. 
Echinoderms 
* Asterias 
Am. Jour, Sct.—Tatrp Serres, Vou. VII, No. 38.—Fes., 1874, 
9 
