158 CLASS IV. 
Oncinolabes Branpt. Body covered all over with recurved 
hooklets. (Differs from Pentacta by defect of respiratory organs.) 
Thyone OKEN, Mulleria FueM. (not JAnc.) Feet equal, nume- 
rous, scattered through the whole body. Body cylindrical. 
a) Tentacles ramose, often unequal (Phylloporus GRuBE, Anaperus 
Troscu., Orcula TROSCH.) 
Sp. Thyone papillosa, Hol. papillosa, Zool. dan. Tab. 108, fig. 5, Fors. Brit. 
Starf. p. 233; in the North Sea, &e. 
b) Tentacles peltate (Sporadipus BRANDT). 
Sp. Sporadipus Ualanensis Br. &e. 
Holothuria nob. (Species of genus Holothuria Li.) Feet of two- 
fold structure and figure, some cylindrical, dilated at the tip, 
usually occurring in the abdomen only, others situated on the back, 
not dilated at the tip, emerging from warts on the back. Body 
cylindrical, or flattened in the abdomen. 
a) Tentacles peltate or wmbellate usually 20 (Stichopus Br., Diploperi- 
deris Br., Holothuria Br., Bohadschia Janc., Mulleria Jauc., Trepang 
J AEG.) 
Sp. Holothuria tubulosa, Fistularia tubulosa LaM.; Holothwria tremula GMEL., 
Cuv., Bonapscu de quibusd. Animal. marin. 1761, Tab. vi., TIEDEMANN 
Anat. Tab. 1., Cuv. R. Ani. éd. ill. Zooph. Pl. 20, fig. 3 ; one of the largest 
of the species in the Mediterranean. Twenty tentacles, placed alternately 
in two circles, surround the mouth. Holoth. argus, Bohadschia argus 
JarceR de Holoth. Tab. m1. fig. 1, on the coasts of Celebes and Timor. 
Holoth. edulis, Trepang edulis Janc., Luss. Cent. Zool. Pl. 46, fig. 2, 
GuERIN Iconogr. Zooph. Pl. 4, fig. 7; this species lives on the coral-reefs of 
the Molucca, Philippine and Carolina islands, and is fished up in large 
quantities with other species under the name of Zrepang, to be dried and 
smoked and prepared with condiments for the use of the Chinese and 
Malays, who consider it an exceedingly nutritive and stimulating (aphro- 
disiacum) article. 
b) Tentacles ramose. 
Genera: Cladolabes Branpt (tentacles 20), Colochivus 'TRoscn. 
(Tentacles ten, two smaller). 
Psolus OKEN (in part). Feet equal, disposed on a ventral flat 
disc, on the back none. Tentacles ramose. 
Psolus Janc., Br. Body attenuated backwards, covered with 
skin rugose or scaly. Three rows of feet in the ventral disc. 
Sp. Psolus phantapus, Holoth. phantapus L., Zool. dan. Tab. 112, Fors. Br. 
Starf. p. 203, GUER. Zconogr. Zooph. Pl. tv. fig. 1; in the North Sea. 
