Brett— On the Echinoderm Fauna of the Island of Ceylon. 649 
21. OPHIOMASTIX ANNULOSA. 
Ophiomastiz annulosa. Miller and Troschel, Syst. der Ast., p. 107; Lyman, 
Chall. Rep., p. 175. 
This species was brought home by Dr. Ondaatje in the most excellent con- 
dition. 
22. OPHIACTIS SAVIGNII. 
Savigny, Descrip. de ’Egypte, Echinod., pl. ii., figs. 4 and 5. 
Ophiolepis savignit. Miller and Troschel, Syst. der Ast., p. 95. 
Ophiactis savignit. Lyman, Chall. Rep., p. 115. 
23. OPHIOTHRIX NEREIDINA. 
Ophiura nereidina. Lamarck, Anim. s. Vert., i., p. 544. 
Ophiothriz nereidina. Miller and Troschel, Syst. der Ast., p. 115; Lyman, 
Chall Rep., p. 221. 
24, OPHIOTHRIX PUNCTOLIMBATA. 
Ophiothriz punctolimbata. Martens, Arch. f. Nat., 1870, p. 257; Bell, Rep. 
Voy. Alert, p. 143 ; Lyman, Chall. Rep., p. 227. 
25. OPHIOCNEMIS MARMORATA. 
Ophioenemis marmorata. Miller and Troschel, Syst. der Ast., p. 87. 
Mr. Lyman (Illustr. Cat. Mus. Comp. Zool., i., p. 152) is the authority for this 
species having been found at Ceylon; it was not collected either by Dr. Ondaatje 
or Professor Haeckel. 
26. OPHIOTHELA HOLDSWORTHI. 
Ophiothela holdswortht. TK. A. Smith, Ann. & Mag. Nat. Hist. (5), i., p. 463. 
This species, collected by Mr. EK. W. H. Holdsworth, and described by Mr. 
Edgar Smith, is not mentioned either by Mr. Lyman in the enumeration of species 
given in his Challenger Report, or by Dr. Walter in his account of what pre- 
ceding workers have done for the Fauna of Ceylon. 
27. ASTROPHYTON CLAVATUM. 
Astrophyton clavatum. Lyman, Proc. Boston Soe., I. H., viii., p. 85; Chall. 
Rep., p. 258. 
It is to be hoped that future collectors of this beautiful form will, while their 
specimens are fresh and capable of being moulded into shape, extend the many 
branched arms, and not allow the specimens to dry or harden with the arms 
twisted up. 
