MUSEUM OF COMPARATIVE ZOOLOGY. 213 
Bolina alata, Ac. 
This beautiful specimen of Ctenophores was found once, but there is: reason 
to believe that it is common in the Bay of Fundy. 
In the few specimens which were’seen there were no parasitic Actinians in 
the body, as is found in the related Muemiopsis from Newport. Of course, 
negative evidence of this kind may not mean much, for early in the season at 
Newport none of the specimens of Mnemiopsis have specimens of Actinians * 
in their chymiferous tubes or stomachs. 
Beroé roseola (Aa.). 
Several specimens were found at Grand Manan. 
SIPHONOPHORA. 
Nanomia cara, A. Aa. 
Plates I., I1., II. 
The only Physophore which was captured at Grand Manan is the interesting 
medusa called by A. Agassiz | Nanomia cara. This jelly-fish, described many 
years ago, has been repeatedly mentioned in text-books and general works on 
zoédlogy, but since its discovery nothing has been added from direct observa- 
tion to our knowledge of its anatomy and somewhat exceptional embryology t¢ 
as made known by A. Agassiz. It was therefore with much enthusiasm that 
I first saw from the wharf back of the Dominion House at North Head, Grand 
Manan, many specimens of this beautiful animal swimming in the water. As 
is well known, many interesting and doubtful details of anatomy remain yet to 
be made out in regard to this animal, and it was with keen pleasure that the 
medusa was captured in abundance and placed in aquaria for study. 
* Tt is, however, an interesting fact that I went directly from Eastport and 
Grand Manan to Newport, and on my arrival there, not more than five days after 
leaving the northern localities, plenty of Actinians in Mnemiopsis were found. 
The yearly record of the time of the appearance of this parasite at Newport 
shows it much earlier in other years than at the time I was at Eastport. 
t Proc. Bost. Soc. Nat. Hist., xe 181; North American Acalephe, Illust. Cat. 
Mus. Comp. Zool., II. 200-213 ; Seaside Studies in Natural History, pp. 76-85. 
¢ Although nothing has been added to a knowledge of its anatomy and devel- 
opment, the possibility that a closely allied Physophore occurs in the Arctic is 
commented upon by Moss and by the author. So little is known of the generic 
characters of the Physophore supposed to be Nanomia from Robeson’s Channel 
and Lady Franklin Bay, that we cannot definitely say they are the same. There 
seems no good reason to doubt their identity. 
