176 LIVERPOOL BIOLOGICAL SOCIETY. 
distinctive, but having examined a number of examples of 
the undoubted young of O. pentaphyllum in which con- 
siderable variation was displayed, I have no hesitation in 
referring our specimen to that variable species. 
ASTEROIDEA. 
Family. ASTERIADZ. 
Stichaster roseus, Muller (sp.). 
Astertas rosea, Muller, “Zool. Dan. Prodi, Wipes 
No. 2837. 1776. 
Cribella rosea, Forbes, ‘‘ British Starfishes,”’ p. 106. 1841. 
Asteracanthion roseus, Muller and Troschel, ‘‘ Syst. ies 
Asteriden,”’ p. 17. 1842. 
This is perhaps the rarest of the five additions to our 
list of Echinoderms in which the “Hyena” expedition of 
1888 resulted. It is a northern species, and an inhabitant 
of deep water. The specimens under notice were obtained 
off the south-eastern corner of the Isle of Man, from a 
depth of 20 fathoms. 
Asterias rubens, Linn. 
This species is very abundant at Beaumaris, and not 
uncommonly attains a very large size. I have seen at 
least a dozen specimens which measured from 12 to 15 
inches in diameter. ‘These approached A. violacea in the 
possession of numerous clavate spines, especially amongst 
those bordering the ambulacra. In the deeper parts of the 
Menai Straits, especially to the west of Garth Ferry, I 
have on two occasions dredged numbers of small Asterids, 
which, from the fact that they exhibit more or less 
markedly some of the characters of A. hispida, I have felt 
inclined to refer to that species; but, after carefully 
studying a number of examples from Puffin Island, in 
addition to those in my own collection, I have come to 
mee Ts 
= 7. 
