RECORDS OF IV. A. MUSEUM. 
[i3i 
Neometra gorgonia ; Forty arms, 95 mm. long ; cirri XIX, 39-50, 
35 mm. to 45 mm. long ; edges of all the ossicles smooth ; all of 
the dorsal processes on the cirrus segments triple, the terminal often 
with two additional elements (south-western Australia; 80-120 
fathoms). 
From an examination of the data given above it is evident 
that N . conaminis belongs to the group of species characterized by 
the possession of twenty arms, including N. alecto, N. multicolor, 
and N. spinosissima. 
The Japanese N. multicolor is much smaller than N. conaminis, 
and possesses shorter cirri with considerably fewer segments ; N . 
spinosissima from the Andaman Islands is much larger with pro- 
portionately shorter cirri which have more numerous segments; 
N. alecto is of about the same size as N. conaminis, and possesses cirri 
with the same number of segments ; the cirri of N. alecto are 
proportionately noticeably longer and more slender than are those 
of N. conaminis, while the brachials and cirrus segments have 
slightly produced distal edges, these being smooth in N. conaminis. 
Fam : Thalassometridae, A. H. Clark. 
Genus : Ptilometra, A. H. Clark. 
PTILOMETRA MACRONEMA, J. Muller. 
Ptilometra macronema, 1911. A. H. Clark, Bull, du mus. d'hist. nat. de Paris, 
No. 4, 1911, p. 255, fig. i B, p. 256. 1911, A. H. Clark. The Recent 
Crinoids of Australia, p. 781. 1911, A. H. Clark, Ergebnisse der 
Hamburger sudwest-Australischen Forschungreise, 1905, Bd. 3, Lief. 13, 
S. 461. 1912, A. H. Clark, The Crinoids of the Indian Ocean, p. 189. 
Locality. Off Geraldton ; “ very abundant.” 
Depth. 25-40 fathoms. 
Material. Ten specimens, all of medium size, the arms being 
45 mm. to 55 mm. in length from the radials and the longest cirri 
about 45 mm. long, composed of 69-78 segments; six of the 
examples have twenty arms, two have nineteen, one has sixteen 
and one has fourteen. 
The colour in life is recorded as purple, the cirri red. In 
spirits the colour is yellowish-brown, the cirri becoming deep purple 
in the outer half. 
