204 
BUNOD1D.E. 
It is manifest that this species departs considerably from 
the type of Bunodes. The irregularity of the warting, the 
conical form of the tentacles, and their style of colouring, 
in alternate undefined rings, and the occasional eversion 
of the walls of the throat, indicate a sensible approach 
to the following genus. It is always to abeiTant species 
that we look for cross affinities ; and therefore I was more 
gratified than surprised to see in this animal evident 
marks of connexion, both in appearance and habit, with the 
Sagartiadce. Before I had seen it expand, I suspected it 
to be S. parasitica, especially when in the act of unfolding. 
It has much resemblance to that species, as well as to 8. 
coccinea, with which it was associated ; for a number of this 
little species occurred in the same dredge-hauls ; these also 
adherent to the shells of the Turritellce. The whole aspect 
of the Diadem Pimplet, including the colouring, is that of 
a Sagartia, though the preponderance of its characters deter- 
mines it to Bunodes. It is interesting, in this relation, to 
notice, that one specimen in my possession protruded from 
the mouth a bundle of what appeared to be true acontia. 
The species lives well in a tank ; where it readily deserts 
its shell, and attaches itself to stones, or the vessel. It is 
lively, opening freely, frequently constricting its column, and 
changing its form with considerable rapidity; its vivacity and 
brilliant colour render it an acquisition to the aquarium. 
Both the scientific and the English appellations by which 
I distinguish the species, allude to the coronet of purple 
spots which surround the margin. 
Berry Head, P. H. G. : Torbay, E. W. H. H. : off 
Teignmouth, G. II. King. 
Ballii. 
Sag. parasitica. CORONATA. Sag. coccinea. 
T. crassicornis. 
