EEPORT ON THE HOLOTHUEIOIDEA. 
167 
small conical papillae also on the sides of the body above the lateral ventral pedicels. 
The colour is also somewhat different, the specimens mentioned being light greyish 
inclining to brown. 
The species here described is e^ddently nearly allied to Stichopus natans, Sars, and 
Stichopus tizardi, Theel. 
Stichopus sordidus, n. sp. (PL VIII. fig. 3). 
Tentacles twenty. The ventral pedicels not very obviously arranged in three series, 
the middle one broader than the lateral. A simple row of rather large conical processes 
present along each side of the body. Also larger and smaller processes or papillee on 
the dorsal ambulacra, and some smaller ones spread over the interambulacra. Processes 
or papillae not crowded, excepting round the mouth, where they form a crown. De- 
posits — tables alone, composed of a rounded or quadrangular, perforated disk with 
smooth margin and a spire of four rods and a single transverse beam. Spire of the tables 
terminating in about sixteen teeth. Dorsal papdla strengthened by numerous, curved, 
smooth, or slightly spinous rods ; pedicels supported by a few rather large, irregularly 
bilateral, perforated plates. Colour in alcohol, dark brown, almost black, inclining to 
violet. Length in contracted state, 80 to 90 mm. 
Habitat . — Station 167a, June 27, 1874 ; lat. 41° 4' S., long. 174° 19' E.; Queen 
Charlotte Sound, near Long Island (New Zealand); depth, 10 fathoms; mud; eight very 
contracted specimens. 
All the specimens are very contracted and wrinkled, their true shape and size being- 
unrecognisable. For the same reason, the position of the dorsal ambulacral appendages 
is not fully clear. Excepting the simple row of conical large prominences along each 
side of the body, which is always well defined, there seems generally to be an alternating 
row of equally large processes along each dorsal ambulacrum, and, besides, some smaller 
papillae scattered not only on the ambulacra, but also on the interambulacra, where, how- 
ever, they seem to be very rare. Consequently it appears that the processes and papillae 
are principally collected on the two dorsal ambulacra as well as along the sides of the 
body. The larger processes have a length of about 8 mm. and a breadth at the base 
of 5 or 6 mm. 
The calcareous ring is of the usual form, the radial pieces considerably larger, almost 
quadrangular and slightly incised posteriorly, A single madreporic canal and Polian 
vesicle are present. All the individuals have lost their -vdscera, excepting one which 
has a thin bundle of long, very narrow and slender genital tubes, several times branched, 
on each side of the dorsal mesentery. 
Only one kind of deposit seems to be present, viz., tables (FI. VIII. fig. 3, a, b, c) ; but 
it must be noted that I have also found a few oval buttons of the well kno-wn form -with 
i 
