RECORDS OF W.A. MUSEUM. 
[lyr 
MOLPADIA, sp. ? 
A specimen from Cottesloe Beach [No. 233 (2983)] is in such - 
poor condition that its identification is impossible, but the stout 
calcareous rin^ with comparatively short posterior prolongations 
on the radial pieces is suggestive of Molpadia rather than Caudina, 
and the fifteen tentacles and absence of tube-feed, taken in connec- 
tion with its general appearance, show that it is certainly a mol- 
padid. The tail is missing : the remaining body measures about 
40 mm. long by 17 in diameter. 
COLOCHIRUS QUADRANGULARIS. 
Holothuria qmdranguiaris. Lesson, 1830. Cent. Zool., p. go, 
Colochirns quadrangularis, Selenka, 1868. Zeit, f.w.zool,, vol. 18, p. 112. 
A single specimen, well preserved and about 55 mm. long, but 
without data, other than “ West Australia,” is the sole representa- 
tive of this species. 
COLOCHIRUS TUBERCULOSUS. 
Holothuria tuberculosa, Quoy and Gaimard, 1833. Voy. de I’Astrolabe, Zool. 
vol. 4, p. 131. 
Colochirus tuheiciilosa, Semper, 186S. Reis, Arch, Phil.: Holothnrien, p. 239. 
A specimen about 50 mm. long, and without other data than 
the simple “West Australia,” represents this species. 
COLOCHIRUS AXIOLOGUS," sp. nov. 
Plate XXV, 
Tentacles 10, large and arborescent, the two ventral ones much 
smaller than the other eight. Calcareous ring only moderately 
stout, about 3-4 mm. broad (high), with no posterior prolongations, 
Polian vessel single, rather large and nearly spherical. Stone-canal 
single, in the dorsal mesentery. Genital glands unbranched, 40-50 
mm. long, in a thick tuft on each side of the mesentery, near the 
middle of the body cavity. Respiratory trees short, but well- 
developed and much branched. Ambulacra! appendages nearly 
or quite confined to the ventral ambulacra; each of these ambulacra at 
the middle of the body carries about eight longitudinal series of well- 
formed, rather large pedicels, the entire band being about 10 mm. 
wide. As the ends of the body are approached, the series of 
1 Gr, Axiologos^rems.rksRAe. 
