284 
Addenda. 
After the above was printed I have received Bigelow’s 
paper: Medusae and Siphonophorae collected bj the IT. S. Fisheries 
Steamer “Albatross” in the Northwestern Pacific, 1906 (Proceed. 
U. S. Nat. Mus. Vol. 44, 1913). 
In this paper Bigelow mentions some species, also mentioned 
in the present paper, and not previously known from the area in 
question. The new localities have been added in the above (marked 
Bigelow 1913), but the following species need further remarks, 
which could not be inserted in the proof-sheet. 
Rathkea octopunctata (Sars) is supposed to be identical with 
R. Blumenbachii (Rathke); some specimens were found in the 
Bering Sea. 
Browne (1907) and May er (1910) have pointed out, that it 
would be very desirnble to obtain a comparison between Atlantic 
and Pacific specimens of Staurophora. Bigelow has been able to 
make such comparisons, and he States, that the Atlantic species S. 
arctica (Håeckel) and laciniata Agassiz are identical with the Pacific 
S. Mertensii Brandt. 
Aglantha rosea (Forbes) is considered to be identical with A. 
digitalis (O. Fr. Muller); the species is very common in the north- 
western Pacific. 
From deep-water hauls a great many specimens have been 
obtained of a Pantachogon, recorded as P. Haeckelii Maas; the 
thorough description and the figures agree exactly with the Green- 
landic specimens described above as P. rubrum Vanhoffen and there 
can be no doubt, that they belong to the same species. It is a 
very interesting faet, that this species, previously known from 
tropical and antarctic deeps only, has now been detected in northern 
regions both in the Atlantic and in the Pacific area. From Bige¬ 
low’s description it seems very possible, that P. rubrum is iden¬ 
tical with P. Haeckelii, but the question seems to me still to be open. 
B i g e 1 ow describes and figures an Aurelio\ referred to A. 
limbata Brandt, which seems to have a great likeness to the above 
