120 
THE VOYAGE OF H.M.S. CHALLENGER. 
A. Ambulacral appendages of the ventral surface distributed over the ambulacra, as well as 
interambulacra, an arrangment of them in rows not being indicated or very indistinctly. 
Dorsal papillae scattered, not placed on warts or protuberances. 
• 
Colochirus spinosus {Holothuria), Quoy and Gaimard, 1833 ; Selenka, 1868; von 
Marenzeller, 1881. Cladolabes spinosus, Brandt, 1835. Stolus firmus, Selenka, 
1867. Ocnus spinosus, Semper, 1868. Thy one Jirma, Semper, 1868. Thy one 
spinosa, Semper, 1868. 
Body oval or elongated, not angulated, more tapering' posteriorly, with oval and anal 
portions turned upwards. Dorsal papillae minute, and, like the ventral pedicels, 
scattered irregularly. A row of hard conical points along each side of the 
ventral surface. Deposits — large, knobbed buttons, with four holes; slightly 
smaller flat, spinous cups made up of a ring and a central x -shaped rod ; and 
reticulate thick scales. Perisome hard. 
Habitat . — China (Selenka), Port Jackson (Quoy and Gaimard). 
(Mus. Holm.) Three specimens from Australia. 
Coloehirus inornatus, von Marenzeller, 1881. 
Body elongated or fusiform, not angulated. Dorsal papillae minute, scattered. Ventral 
ambulacral appendages — small pedicels and papiUse of nearly equal size, the 
former disposed in irregular series along the three ambulacra, and, besides, 
scattered on the interambulacra, the latter mingled with the former in the inter- 
ambulacra; the longitudinal series of pedicels being thus indistinct. Deposits — 
reticulate, very flat, spinous cups; knobbed buttons with four to six holes, or 
more; perforated plates; and not very large scales. 
Habitat . — Japan or China (von Marenzeller). 
B. Ventral pedicels in three distinct longitudinal series ; ventral interambulacra naked. 
Dorsal papillae situated on larger or smaller warts or conical processes. 
I. Dorsal papillae in rows on the ambulacra; dorsal interambulacra naked. 
1 . Pedicels, four to eight rows in each ventral ambulacrum. 
Colochirus quadrangularis [Holothuria), Lesson, 1830; Selenka, 1868 [partim); 
Semper, 1868. Colochirus coeruleus. Semper, 1868. 
Body quadrangular. Dorsal ambulacral appendages very large, placed along the four 
angles of the body; four to six rows of pedicels in each ventral ambulacrum. 
Deposits — scales ; reticulate spheres and cups ; and small plates with four larger 
and some smaller holes, and with spines on one end. 
