KEPORT ON THE HOLOTHURIOIDEA. 
153 
Phyllophorus holothurioides, Ludwig, 1875. 
Tentacles eighteen, thirteen exterior, two ventral of which are much smaller, and five 
small interior. Deposits — tables consisting of an irregular, perforated disk with 
uneven, spinous margin, and a spire reduced to four or six spines. Calcareous 
ring of ten simple pieces, the radial ones larger and provided with two slender 
posterior prolongations, each divided into joints. 
Hahitat . — (?). 
II. Ambulacral appendages of two kinds : smaller cylindrical pedicels only on the 
middle of the ventral surface, and larger conical granular papillae or warts with 
pedicels on the rest of the body. 
Phyllophoriis gramilatus {Psolus), Grube, 1840; Sars, 1857. Hemicrepis granulatus, 
Muller, 1853. 
Tentacles twelve to thirteen in the exterior crown, and six smaller in the interior. 
Deposits — nearly absent on the middle portion of the ventral surface, but very 
closely crowded on the rest of the body, especially in the papillae ; they consist 
of irregular, perforated smooth plates and large, round, very thick reticulate 
scale-hke ones. Calcareous ring of ten simple pieces, the radial with two 
slender undi%'ided posterior prolongations. 
Habitat . — Mediterranean Sea (Grube, Sars, Ludwig, &c.). 
The following tw'o species are incompletely known and need to be re-examined : — 
Phyllophoriis tenuis, Haacke, .1880 ; Ludwig, 1883. 
Hahitat . — Mauritius (Haacke, Ludwig). 
Ludwig hawng seen the type-specimen, states that it is too defective to be 
re-examined. He does not seem to be sure whether it is a Phyllophorus. 
Phyllophoriis fusiis {Holothuria) , Delle Chiaje, 1828 and 1841. 
Habitat. — Mediterranean Sea (Delle Chiaje). 
Family IV. Rhopalodinid 
Dorsal interradial space or bivium highly abbreviated and reduced, ventral surface 
enormously enlarged, consequently the body has a bottle-like appearance wuth 
mouth and anus placed close together in the same narrow proboscis-like pole 
1 Semper referred this peculiar Holothurid to a new class among the Echinoclermata, which he called Diplo- 
stomidea.” 
(ZOOL. CHALL. EXP. PART XXXIX. 1886 .) 
Qq 20 
