EEPORT ON THE HOLOTHUEIOIDEA. 
123 
ventral ambulacrum. Deposits — delicate, reticulate spheres; more strongly 
formed spheres ; and scales. 
EaMtat. — Bohol (Semper). 
Colochirus cucumis, Semper, 1868. 
Body quadrangular. Each of the two dorsal ambulacra with a row of rather large 
papillfe ; also a few, smaller scattered papilloe on the three upper interambulacra. 
Pedicels two in breadth in each ventral ambulacrum. Deposits — reticulate 
cups and spheres ; scales. 
Hahitat. — Bohol (Semper). 
(Mus. Holm.) One specimen dredged at Japan, 38 mm. long and 14 mm broad, of 
a distinctly quadrangular appearance. Each of the three ventral ambulacra 
composed of two rows of pedicels ; owing to contraction, three pedicels 
seem to be placed side by side in the middle of the lateral ventral ambulacra. 
The dorsal papillje run out from lower or higher conical protuberances, the 
largest about 4 mm. long, forming a zigzag row along the two dorsal 
ambulacra. The sides of the body carry only a few smaller papdlEe, and the 
space above the pedicels seems to be totally in want of them, or bears some 
very minute ones. Deposits — larger and smaller scales ; reticulate spheres and 
other developmental stages of scales ; small reticulate spheres and cups. 
Colochirus peruanus, Semper, 1868. 
Body ..4scidm-shaped. Papillae irregularly scattered over the back. Pedicels forming 
two rows along each ventral ambulacrum. Deposits — scales, and reticulate 
cups. 
Habitat. — Peru (Semper). 
Colochirus tuherculosus [Holothuria), Quoy and Gaimard, 1833; Semper, 1868. Holo- 
thuria pentagona, Quoy and Gaimard, 1833. Stichopus tuberculatus, Brandt, 
1835. Stichopus pentagonus, Brandt, 1835. (?) Colochirus quadrangularis, 
Troschel, 1846. Cercodemas anceps, Selenka, 1867. Cucumaria pentagona, 
Semper, 1868. Colochirus anceps. Semper, 1868. 
Body more or less elongatedly oval, not angular, or indistinctly so. Dorsal papillae 
irregularly scattered, never attaining any considerable size. Pedicels forming four 
to six rows on each ambulacrum. Deposits — reticulate spheres or cups, and 
large irregular scales. 
Habitat. — Tonga (Quoy and Gaimard), Port Jackson (Quoy and Gaimard), Port MoUe, 
Port Denison, Torres Strait (Bell), Macassar (Ludwig), Malacca (Troschel), 
Singapore, Bohol (Semper), Hong Kong (Selenka, Semper), Amoy (Ludwig), Japan 
(Semper). 
(Mus. Holm.) Two specimens, one from Australia, and the other from Guam, the 
