48 NOTES. 



row at the actiual 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, ray 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 Ambtypneustes, 

 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 Woodsii. 



SALMACIS ALEXANDEI. Bell. 



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 seea 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 cousidei-ably 

 in height, some being quite conical others flattened and depressed, 

 and many malfermed 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 toreumaticus ; 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 8. bicolor and 8. r/n-i^nnis. The most common variety 

 has the test white, the base of the primary spines green, the 

 centres violet or purple, and the tips white. 



SALMACIS KARISPIXA. 



Specimens dredged in Port Jackson along with S. alexandri 

 (BELL) agree exactly with numerous specimens from Port 

 Denison, and in a great degree with BELL'S description and 



