118 '"endeavour" scientific results. 



Family STRONGYLOCENTROTID^. 

 Genus Heliocidaris, L. Agassiz and Desor. 

 Heliocidaris erythrogramma {Valencienes). 



Echinus erythrogrammus, Valenciennes, Voy. Venus, Zooph., 

 1846, pi. vii., fig. 1. 



Heliocidaris eurythrogramma, Agassiz and Desor, Ann. Sci. 

 Nat., ZooL, vi., 1846, p. 371. 



The specimens from Oyster Bay, Tasmania, are typical 

 examples of the species, about 50 mm. in diameter, dark 

 purpUsh in colour, becoming dull green with a purplish cast 

 when dry. The specimen from Flinders Island, Bass Strait, 

 is 68 mm. in diameter, with the test very pale brownish and 

 the spines hght olive green, as in H. tuherculata. The short- 

 ness of the primaries and the absence of any arcs of pores 

 with more than 7 pairs show it must be referred to H. erythro- 

 gramma. I do not feel satisfied, however, that there are 

 really four species of Heliocidaris on the southern and 

 western coasts of Australia, as Doderlein affirms in his recent 

 revision of the genus,i but I think it quite possible that these 

 four forms will prove to be either a single species or perhaps 

 two. I may here protest against Doderlein's action in 

 putting the Peruvian Echinoid, Coenocentrotus gihhosus, into 

 Heliocidaris. The differences in ambulacra, abactinal system, 

 coronal plates and spines far outweigh the single resemblance 

 in globiferous pedicellarise. If the latter is such a weighty 

 character, the species ought to be put in the family Temno- 

 pleuridse, for the globiferous pedicellarise are surprisingly 

 similar to those of Salmacis and Temnopleurus ! On the 

 other hand, I think Doderlein is right in refusing to include 

 the Japanese species crassispina in Heliocidaris. It is better 

 left in Strongylocentrotus, if one is unwilling to recognise the 

 genus Anthocidaris for its reception. Four specimens. 



Locs. — Oyster Bay, Tasmania, 30 fathoms. 



East coast of Flinders Island, Bass Strait. 



Family CLYPEASTRID^. 

 Genus Clypeaster, Lamarck. 

 Clypeaster AUSTRALASIA [Gray). 

 Echinanthus australasice, Gray, Proc. Zool. Soc, 1851, p. 34. 

 Clypeaster australasice, H. L. Clark, Mem. Mus. Comp. Zool. 

 Harvard, xlvi., 1914, p. 32. 



The smallest of these individuals is 46 mm. long, 42 mm. 

 wide and 14 mm. high ; the largest is 90 x 80 x 30 mm. The 



1. Doderlein — Fauna Siidwest-Australiens, iv., 1914, pp. 475-487. 



