REPORT ON THE HOLOTHURIOIDEA, 
207 
radial pieces of the calcareous ring are more than twice as large as the inter- 
radial, while in the latter they are of nearly equal size. Even the deposits in 
the body-wall present some small differences. 
Holothuria marenzelleri, Ludwig, 1883. 
Ventral pedicels more numerous and with larger disks than the dorsal, which on the 
other hand run out from slightly larger warts than the former. Deposits — flat rods 
with short, mostly dichotomous branches in the margin, these branches being 
sometimes united so as to form holes, the rods themselves thus acquiring the 
aspect of irregular plates with the margin uneven or spinous and perforated by 
two to six or more asymmetrical holes. 
Habitat . — Nangkauri (Ludwig). 
(Mus. Holm.) One individual from Nangkauri, agreeing in aU respects with the 
description of Ludwig. It is, however, impossible to distinguish any arrange- 
ment of the ventral pedicels in rows — as stated by Ludwig — nor whether they are 
placed on low warts, which, on the contrary, is the case with the dorsal. AU the 
pedicels, being true pedicels, are exactly Uke one another, excepting that the dorsal 
have a smaller disk and are possibly sUghtly conical. Anus fringed with small 
fine papUlte. 
C. Deposits — tables alone in a higher or lower state of development. 
I. Tables incomplete, either the spire or the disk being absent or highly reduced. 
Holothuria catanensis, Grube, 1840, 1864; Semper, 1868; Heller, 1868. 
Dorsal papillce smaU, indistinctly disposed in seven irregular rows. Ventral pedicels 
indistinctly arranged in three longitudinal series. Deposits — very smaU and 
thinly scattered, rounded disks of tables alone, pierced with four holes ; the spire 
is absent or rudimentary. 
Habitant . — Mediterranean Sea (Grube, Heller, von MarenzeUer, Greeffe, Ludwig), 
Portinho (Greeff). 
Von MarenzeUer kindly sent me three specimens dredged at Lesina. Two are 
blackish-brown, the remaining one is lighter. The dorsal papiUce seem to be 
situated on low warts, and do not present any arrangement in rows. The nunute 
and very thinly scattered disks of the tables often carry four short spines, 
showing traces of a spire. The pedicels have a large terminal plate suiiounded 
by a few slender, sUghtly spinous rods, with the ends dilated and perforated ; 
besides which, the “ disks ” are more frequent in the pedicels than in the body-waU 
itself. The papiUee are supported by a very rudimentary terminal plate and 
numerous crowded, solid, and nearly smooth rods with the ends spinous, or branched, 
or perforated. In the papiUse I have found disks with nearly complete spires. 
