"32 " ENDEAVOUR " SCIENTIFIC RESULTS. 



Adambulacrals about 57 on each side of each furrow, dis- 

 tinctly longer than wide, except near arm-tips ; furrow margin 

 with 8 conspicuous spines, the adoral and aboral ones being 

 distinctly smallest, the others about 3 mm. long ; outside of 

 this series is a well-spaced line of 3-5 shorter and more slender 

 spines and external to them is an irregular line of 4-6 small, 

 slender spinelets ; a few extra spinelets may occur on the outer 

 <x)rners of the plates, but there is no tendency to form pedi- 

 cellarial groups. No pedicellarise are to be seen. Oral 

 plates large, swollen, covered by flattened spinelets similar to 

 those on the actinal plates, but distinctly larger ; oral spines 

 coarse and heavy, but neither number nor arrangement is 

 peculiar. Colour, light dirty grayish, more or less yellow on 

 various irregular areas. 



This individual is much larger than either of the species, 

 collected by the " Challenger," and for which the genus was 

 established, is known to be, and it is not impossible that it 

 will prove to be an adult specimen of L. forcipifer, which was 

 taken south of Australia in 1950 fathoms. This seems to me 

 highly improbable, however, for the difference in the form, in 

 the paxillse and in the matter of pedicellariae are very marked. 

 Nevertheless I think there can be Httle doubt that the two 

 forms are congeneric. 



Loc. — Great Australian Bight, 80-120 fathoms. 



Genus Psil aster, Sladen. 



PsiLASTER ACUMiNATUS, Sladen. 



Psilaster acuminatus, Sladen, Chall. Rep., Zool., xxx., 1889, 

 p. 225. 



Except in size, these four specimens show little diversity ; 

 in the smallest R=42 mm.; in the largest R = 100 mm. The 

 actinal interbrachial areas differ considerably in size in the 

 different specimens ; in the one from the Eastern Slope, Bass 

 Strait, they are relatively much larger than in Sladen's figure, 

 which answers well for the other specimens. All four indi- 

 viduals are somewhat rubbed, and the two largest are in rather 

 poor condition ; in none do I find any trace of spines on the 

 superomarginal plates. 



Logs. — Eastern Slope, Bass Strait, 80-200 fathoms. 



South of Gabo Island, Victoria, 200 fathoms. 



Great Australian Bight, 80-120 fathoms. 



