NOTES. 47 



MYCEOCYPHUS ZIGZAG. 



I have never seen this species from the Australian Coast, 

 although Mit. TENISON-WOODS appears to have been more 

 fortunate, and reports it from Tasmania and Port Denison. 



ECHINOSTEEPHUS MOLAEE. 



I have not met with this species on the Australian Coast, but 

 MR. MORTON, during a few days' stay at Lord Howe's Island, 

 obtained a single specimen, which had worn the spines of the 

 actiual surface short with burrowing in the rocks where it had 

 formed a rounded cavity ; the spines above the ambitus are of 

 the usual length ; it is apparently rare, as no other specimen has 

 been obtained although searched for on several recent occasions. 



SALMACIS DUSSUMIEEL 



This beautiful and well marked species is occasionally found 

 in Port Jackson, ou a bottoii of sandy mud and shells, in 8 to 

 10 fathoms. It appears to be more plentiful further north in 

 similar situations at Port Denisou ; the Museum possesses one 

 very large specimen, the test being 3^ in. in diameter, and l\ in. high, 

 obtained in shallow water at the Solomon Islands. The flattened 

 spines round the ambitus and actinostome are fluted and tinged 

 with violet at the tip, the test and base of the spines pure white 

 in some specimens, the spines longest on the ambitus, and 

 radiating therefrom form a fringe round the margin of the test. 



SALMACIS, SP. 



PI. ii., tigs. 1, 2, 3. 



This is a very peculiar pyriform variety or species, of which 

 the Museum possesses but one specimen, without any authentic 

 locality.* The color of the spines above the ambitus, judging 

 from a few sticking to the denuded test, is orange-red at the base, 

 white or greenish-white towards the tips, secondary and milliary 

 spines white, the bosses imperforate, milled and creuulate, 

 mammilla often tinged with orange-red, at the actinostome there 

 is only one row of primary tubercles with a row of secondaries on 

 either side ; between each plate a row of milliaries, towards the 

 ambitus the secondaries enlarge and form a row of three or four 

 primary tubercles across each plate, above the ambitus they 

 become small again, until only one row of primary tubercles 

 reach the anal system ; the spines near the abactiual pole are 

 orange reel. On the plates of the ambulacral area there are 

 only two primary rows of tubercles at the ambitus, and only one 



* Said to have been trawled in 35 fathoms off Port Jackson. 



