[MCMURRICH] THE ACTINIARIA OF PASSAMAQUODDY BAY 65 
states in one place (p. 347) that Linnaeus founded his P. equinus on the 
figure of senilis given by Baster, a statement for which I have found no 
evidence, and in another place (p. 418) he states that Baster’s fig. 2, PI. 
XIII according to Linnaeus’ citation is A. senilis, but according to his 
description it is A. felina. I cannot find any evidence of such a confusion; 
Linnæus’ description of the column of senilis as “transverse rugosa” 
agrees well with Baster’s description of the form represented on his PI. 
XIII, fig. 2, as “rugis orbicularibus”, and certainly does not agree with 
Baster’s description of the form cited by Linnæus as A. felina, which is 
said to be “rugis longitudinalibus.”’ It is to be noted that Andres gives 
A. jelina L. as a synonym of A. dianthus, an error based on that just 
mentioned. 
All this confusion has led to the general disuse of Linnzeus’ term 
senilis, but from the discussion of the term given above it would seem 
perfectly clear that Haddon was quite correct in principle when he 
stated that “If strict priority be observed, the species commonly known 
as Actinoloba dianthus (Ellis) will have to be called Metridium senilis 
Clann)” 
URTICINA FELINA (L) HADDON. 
Examples of the form which I identify with this species were ob- 
tained from the rocks between tide marks, and also by dredging in 
deeper water, about 22 metres, in the St. Croix River, All were very 
evidently identical with the Rhodactinia Davisii of L. Agassiz. 
The largest individual was found under a rock ledge, a short distance 
above low water mark, and its dimensions were as follow: The column 
had a height of 4 em. and a diameter of 5 cm., the disk reaching a dia- 
meter of 7.5 cm; the tentacles were stout and had a length of about 
2 or 3 cm., with a basal diameter of 0.7-0.9 cm. 
The coloration shown by all the specimens was exceedingly 
attractive. The column was either of a uniform red or else had a ground 
colour of pale red or yellowish, upon which were closely set irregular 
blotches, and streaks of carmine (Pl. I, fig. 1), so that the general 
effect was that of brilliant carmine. The somewhat massive tentacles 
were of a beautiful translucent pink, sometimes uniform throughout, in 
other cases deepening somewhat in tone at the tips and also at about 
the middle, where an indistinct band occurred. At the base each ten- 
tacle was surrounded by a pair of deeper pink streaks, which were pro- 
longed some distance upon the disk. This was pink in colour; the 
peristome was dotted and streaked with crimson and the gonidial angles 
were flesh colour. 
. The base was strongly adherent and more or less expanded in all the 
examples obtained. The column wall in individuals preserved in 
