Hutton,—0n some New Zealand Echinodermata, 307 
test is white with pink tubercles; the integument a pale brownish yellow. 
The spines on the upper portion are reddish purple with white tips; on the 
lower portion they are white, getting yellow towards the base. 
Diameter 2 inches. Height 1:4 inches. 
Echinocardium australe. 
A specimen of this species, presented to the Museum by G, Joachim, 
Esq., from Northport, Chalky Inlet, measures 23 inches in length. 
Molpadia coriacea, Hutton. 
This is evidently not a true Molpadia. It is probably a Caudina or an 
Echinosama, but as the type is in the Wellington Museum, I cannot 
re-examine it. 
Cucumaria thomsoni, sp. nov. 
Body fusiform, scarcely subpentagonal. Skin rough, wrinkled. Ambu- 
lacra with the tubercles densely crowded in about 5 or 6 rows. No feet 
on the interambulacral areas. Tentacles—? 
Rich brown, the white tips to the feet giving the ambulacral areas a 
spotted appearance. Length, 14 inches. 
Stewart Island. Presented to the Museum by G. M. Thomson, Esq., 
after whom I name it. A single specimen in spirit. 
Echinocucumis alba, Hutton. 
The receipt of another specimen of the Chirodota (? ) alba of my catalogue 
has enabled me to dissect it, and I find that it has five well-marked 
ambulaera, and should be placed in the genus Echinocucumis. 
Labidodesmus turbinatus, sp. nov. 
Body rounded, suddenly contracted posteriorly into a short-pointed tail, 
and anteriorly into a rather long cylindrical neck; skin smooth, slightly 
transversely wrinkled ; the two dorsal ambulacra, with two rows each of 
rather distant feet; the three ventral ambulacra either like the dorsal or 
with more crowded feet in several rows. Tentacles—. Body white, covered 
with a brown epidermis, which easily peals off, except round the ambulacral 
feet. Length, 21 or 3 inches. 
Stewart Island. Presented to the Museum by G. M. Thomson, Esq. 
Two specimens in spirits. 
PENTADACTYLA, gen. nov. 
Feet evenly spread over the greater part of the body.  Tentacles five, 
peduneulated, frondose ; dental apparatus very large. 
Pentadactyla longidentis, Hutton. 
In the Catalogue of the Echinodermata of New Zealand (1872), p. 16, I 
described a Holothurian under the name of Thyone longidentis, It is, how- 
