24 Proceedings of the Royal Physical Society. 



7. Salmacis bicolor, Agass. 

 A. Ag., Rev. Ech., p. 471. 

 Localities, — XXXIII., Christmas Island, 23 fathoms, sand and mud; IX., 

 Bentinck Island to Courts Island, 12 to 26 fathoms, coral and sand; 

 . XXV., Gregory Group, 4 to 14 fathoms, sand and shell ; II., Iron Island, 



10 to 25 fathoms, stones and mud. 

 In general appearance these specimens bear a strong resemblance to those 

 which I have referred to S. globator, Bell, but on closer examination they 

 prove to be distinct. The sutural furrows are marked, and the sutural pores 

 conspicuous ; the tubercles are prominent even above the ambitus ; the spines 

 are numerous all over the test, the ambital ones attaining a length of 15 mm. 

 Height, 30 mm. 27 mm. 24 mm. 



Diameter, 43 mm. 41 mm. 34 mm. 



Actinostome, 13 mm. 12 mm. 10 mm. 



Kecorded from the Western Indian Ocean, Ceylon, and the Philippines ; 

 and from King Island, Mergui Archipelago, by Dr Anderson. 



8. Salmacis Dussumieri, Agass. 

 A. Ag., Rev. Ech., p. 473. 



Localities. — XXXIII., Christmas Island, 23 fathoms, sand and mud; IX., 



Courts to Bentinck Islands, 12 to 26 fathoms, coral and sand ; XVI., 



Alligator Rock, 8 to 18 fathoms, rock and sand ; XXX., Fly Island 



(High Peaked Island), 8 fathoms, sand; XXV, Gregory Group, 4 to 14 



fathoms, sand and shell. 



A good series of this species, all with the spines complete. Spines 



spathiform and up to 17 mm. in length at the ambitus; much shorter, 5 mm., 



sharper and relatively stouter on the abactinal surface ; on the actinal surface 



mostly spathiform, especially around the actinostome, and from 5 to 7 mm. 



in length. Only ambital and actinal spines banded with purple. 



Height, 19 mm. 19 mm. 19 mm. 11 mm. 



Diameter, 42 mm. 41 mm. 42 mm. 29 mm. 



Recorded from the China Seas, the Philippines, and " East India 

 Islands"; and from King Island, Mergui Archipelago, by Dr Anderson; 

 also Mozambique. 



9. Salmacis sulcata, Agass. 

 A. Ag., Rev. Ech., p. 470. 

 Localities. — IX., Bentinck to Courts Islands, 12 to 26 fathoms, coral and sand ; 

 X VIII., Off Paway Island, 10 to 21 fathoms, sand and shell; XVII., Sir 



