48 NOTES. 
row at the actinal and abactinal poles, with an irregular arc of 
three pairs of pores to each plate, and a single pore at each 
angle of connection, a row of milliaries and a shallow marginal 
suture divide each plate in both areas. The anal system large, 
all the ocular plates external. This remarkable Urchin will be 
more fully described hereafter, my object at present is merely to 
call attention to some of the peculiarities exhibited in the test, 
although in the color of the spines it resembles an Amblypneustes, 
the sutures and pores show it to be closely allied to, if not a true 
Salmacis ; there are no actinal cuts, but the auricles resemble 
those of Salmacis. For this species I propose the mame of 
Salmacis Woodsiv. 
SALMACIS ALEXANDRI. SBell. 
This very beautiful species abounds in Port Jackson, in one 
haul of the trawl in 5 to 10 fathoms no less than 80 specimens 
have been recently taken, varying in color and form in a 
remarkable degree. In some the test is conical, in others 
rounded and depressed with the actinal surface flattened, the 
sutures between the plates varying from shallow to deep grooves, 
which can be plainly seen before the tests are denuded of their 
spines, in others the actinal surface is swollen or rounded. 
The color of the spines varies from pure white with violet or 
rose tips to dull green, some of a rich violet, purple-rose color, 
or pink, tipped with white ; frequently specimens all white with 
a tinge of rose color may be found. The tests vary considerably 
in height, some being quite conical others flattened and depressed, 
and many malformed individuals are obtained; the tests grow 
very rapidly ; in the young the sutures and pores between the 
plates are very conspicuous, but become almost obliterated in 
very old individuals. The tests of the young of about two 
inches across bear a close resemblance to a half grown 
Temnopleurus torewmaticus ; others with the base green or purple, 
the centres violet or brick-red, and the tips white, occasionally 
all these colors may be found blended, the test itself white, forming 
a pleasing contrast with the color of the spines, which however 
whether dry or in spirits soon lose their brilliancy ; none of the 
spines in this species are ringed with the various colors as is the 
case with S. bicolor and 8. rarispinis. The most common variety 
has the test white, the base of the primary spines green, the 
ceutres violet or purple, and the tips white. 
SALMACIS RARISPINA. 
Specimens dredged in Port Jackson along with S. alexandri 
(BELL) agree exactly with numerous specimens from Port 
Denison, and in a great degree with Bruu’s description and 
