114 " ENDEAVOUR " SCIENTIFIC RESULTS. 



while at the third plate of ambulacrum IV it is 46 mm. ; the 

 sixth or seventh ambulacral plate is about on a level with 

 the genital pores. Another specimen is remarkable in that 

 four genitals are developed as madrepo rites ; to judge from 

 the position of the anus they are genitals 1, 2, 4 and 5 ; each 

 genital plate except 2 has two genital pores, so there are 

 nine such pores altogether. In neither of these exceptional 

 specimens is there any ocular insert. The same is true of 

 the largest normal specimen, but there are 6 specimens in 

 which ocular I is more or less broadly insert. Eight speci- 

 mens. 



Logs. — Oyster Bay, Tasmania, 20-40 fathoms. This speci- 

 men has been selected as the holotype. 



Six miles east of Cape Hawke, New South Wales, 47-50 

 fathoms. 



Eight miles east of Sandon Bluffs, New South Wales, 35-40 

 fathoms. 



Salmacis sph^roides {Linne). 



Echinus sphceroides, Linne, Sys. Nat., 10th ed., 1758, p. 664. 

 Salmacis sphceroides, Loven, Ech. Linn., 1887, p. 69. 



These specimens range in diameter from 40 to 80 mm.; the 

 height ranges from .65 to .75 h.d. The colouration is excep- 

 tionally red, the actinal primaries in particular being bright, 

 almost vermilion, red with several bands of white ; abacti- 

 nally, however, the primaries, even in the reddest specimen, 

 are green or greenish at base. Seven specimens. 



Log. — Twenty miles north-north-east of Double Island 

 Point, Queensland, 29-30 fathoms. 



Salmacis virgulata {L. Agassiz and Desor). 



Salmacis virgulata, L. Agassiz and Desor, Ann. Sci. Nat., 

 Zool., vi., 1846, p. 359. 



The specimens without definite locality are large, typical 

 examples of this species, showing little or no trace of the 

 horizontal sutural furrows of S. alexandri : they measure 

 75 and 90 mm. h.d. respectively. The specimen from off 

 Double Island Point, Queensland, is much smaller (only 48 

 mm. h.d.) and has the sutural furrows well marked ; its 

 most striking feature, however, is the colouration of the 

 primary spines, which at first glance seem to be whitish with 



