374 
from the description of the colour also the other specimens (Moly- 
neux Bay) referred by B e n h a m to Ch. gigas would appear to be 
Ch. nigra. 
The present species is very well distinguished from Chiridota 
gigas Dendy & Hindle through several characters, especially the 
totally different arrangement of the wheel-papillæ and the presence 
in the latter species of thick, curved rods with spinous ends. Also 
the colour is quite different, Ch. gigas being, according to J osh ua, 
bright scarlet with white papillæ. From the two other large, dark spe¬ 
cies of the Pacific region, the Hawaiian Ch. uniserialis W. K. Fisher 
and the Japanese Ch. regalis H. L. Clark, it is easily distinguished 
through the absence of curved calcareous rods in the skin and in 
the wheel papillæ in these two species being confined to the mid- 
dorsal interradius. The Arctic Pacific species Ch. discolor Esch. 
might appear to have some relation to Ch. nigra. From* the de¬ 
scription of this species given by H. L. Clark (The Apodous 
Holothurians, 1907; p. 27) it is not easy to gather exactly by which 
characters it is distinguished from the New Zealand species, and 
a pair of poorly preserved fragments received from the U. S. Na¬ 
tional Museum do not allow a doser comparison of the two species. 
Only one important distinguishing character is disclosed, viz. the 
entirely different shape of the ciliated funnels, which are long and 
siender in Ch. discolor (Fig. 57), very short and broad in Ch. nigra. 
That the two species are perfectly distinet is beyond doubt. 
23. Chiridota cavnleyensis n. sp. 
Carnley Harbour, Auckland Islands; ca. 45 fms. 6/XII. 1914. Several 
specimens. 
The species was found to be very hard to preserve; most of 
the specimens were only fragments, without the anterior end. The 
larger of them measure 13—14 cm, by a diameter of ca. 6—8 mm. 
It is thus a rather large form, though not quite so large as Ch. 
nigra and gigas. 
The colour is white-transparent, the radial muscles being di- 
stinctly seen through the skin, which is perfectly smooth. The 
wheels do not form papillæ; they are collected into diffuse round 
