EEPORT ON THE HOLOTHHRIOIDEA. 
205 
B. Deposits— simple or branched rods, the branches being sometimes united, the 
rods then acquiring the shape of irregular perforated plates. 
Holothuria glaheriima, Selenka, 1867. 
Ventral pedicels very numerous; dorsal pedicels more thinly scattered. Anus 
fringed with papillae. Deposits — minute narrow rods with the ends slightly 
parted , and minute x -shaped bodies with the ends of the arms carryincf 
processes. 
Eahitat — Hayti, Bahama Islands and Panama (Selenka), Surinam (Semper), Mazatlan 
(Semper). 
Semper refers this species to that group which is characterised by the dorsal 
ambulacral appendages being transformed into papiUae. 
HoLothuria luhrica, Selenka, 1867. 
Ventral pedicels more numerous than the dorsal “wart-pedicels.” Deposits — spinous 
curved rods. 
Hahitat . — Acapulco (Selenka), Sanghir (Ludwig), Mazatlan (Semper). 
(Mus. Holm.) Numerous specimens brought home from St, Bartholomew, which 
may be referred to this species or to the preceding one. At the same 
time it seems very possible that they are identical with Lesueur’s Holothuria 
ohscura, dredged at the same locality ; at least there is nothing which disagrees 
with the smnmary description of this author. Colour — dark brown, lighter 
on the ventral surface ; inner surface of the perisome with blackish spots. 
Anus fringed with small elongate papillse. The ventral pedicels much more 
crowded than the dorsal, whereby a line of demarcation becomes visible on 
the transition between the two surfaces. Very often a narrow naked space is 
to be seen along the odd ambulacrum, separating the ventral pedicels into two 
longitudinal series. It seems somewhat uncertain whether the dorsal append- 
ages are to be regarded as papiUae or pedicels ; like the ventral ones, they 
have a distinct, though smaller sucking-disk and a well-developed terminal 
plate. In some individuals they are more obviously cylindrical than in others, 
and in the very same specimen some are cylindrical others more elongate 
conical, with smaller sucking-disk. The dorsal sucking-disks are dark, while 
the larger ventral ones are pale. With regard to the calcareous ring, deposits, 
I’olian vesicles, and madreporic canals, the specimens from St. Bartholomew 
closely resemble Holothuria luhrica. The calcareous rods have a more or less 
rough surface, are often not very distinctly curved, and have the ends slightly 
spinous. In the larger specimens some Cuvierian tubes are present. 
