SEA LILIES, STAHFISHES, ETC. CLARK. 23 



the basal segments are smooth, while the aboral margins are 

 more or less produced as flattened, spinulose projections ; 

 the distal margins of all the segments, except the first five or 

 six are finely spinulose, but none of these characteristics are 

 at all conspicuous. P3 is much like P2, but a little smaller, 

 while P4, which is probably the shortest pinnule on the arm, 

 is only a trifle shorter than P3 ; succeeding pinnules become 

 very slender, 8-9 mm. long and with 22 or more segments. 

 On the basal half of the arm, the pinnule -segments, except 

 the basal two or three, have distinctly, but finely spinulose 

 aboral edges and distal margins, but on the outer half of the 

 arm they seem to be quite smooth. 



Colour (dry) of centrodorsal, basal portion of the cirri, all 

 arm-segments and pinnules, uniformly pale buff or brownish- 

 white ; cirri gradually become dull purple at tip, the lighter 

 shade being confined more and more completely to the ventral 

 side of the segments and finally is crowded out altogether ; 

 arm joints rich reddish-purple, in sharp and handsome con- 

 trast to the fight segments ; oral surface of pinnules very- 

 dark, almost black. One specimen. 



This seems to be a well-marked species, the long cirri, the 

 flexible first pinnule, and the absence of conspicuous pro- 

 cesses on the basal pinnule-segments combining to distinguish 

 it at once from the other species of the genus. 



Loc. — Eleven miles east-south-east of Clarence River 

 mouth, New South Wales, 35-36 fathoms. 



Family THALASSOMETRIDiE. 

 Genus Ptilometra, A. H. Clark. 

 Ptilometra macronema {Miiller). 



Comatula macronema, Miiller, Monatsb. K. Preuss. Akad., 

 1846, p. 179. 



Ptilometra macronemu, A. H. Clark, Smiths. Misc. Coll., 1., 

 1907, p. 358. 



These ten specimens are all typical examples of this 

 ■characteristic South Austrafian species. 



Locs. — Great Austrafian Bight, about 131° E., 62 fathoms. 



South-east of Ffinders Island, South Austrafia, 37 fathoms, 



Sanders Bank, off Kangaroo Island, South Austrafia, 28 

 fathoms. 



Forty miles west of Kingston, South Australia, 30 fathoms. 



