REPOET ON THE HOLOTHUEIOIDEA. 
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Thyone musculosa [Thyonidium), Ayres, 1854; Semper, 1867. 
HaMtat . — Massachusetts Bay (Ayres). 
Thyone longidentis, Hutton, 1872. Pentadactyla longidens, Hutton, 1879. 
Habitat . — New Zealand (Hutton). 
The descriptions of Hutton are very defective, and certainly give a wrong idea of the 
species in question. In his later “ Notes ” Hutton says that the species 
“ belongs to the family Aspidochirotae, and must form the type of a new genus 
distinguished hy having only five tentacles,” &c. Judging from his description of 
the “ dental apparatus,” which is “ very long, nearly half the length of the body, 
tubular for half its length, the rest cut into five teeth,” I suppose the species to 
be a Dendrochirote, though possibly not a Thyone. 
Thyone hrevidentis, Hutton, 1872. 
Habitat . — New Zealand (Hutton). 
Thyone aurea [Holothuria), Quoy and Gaimard, 1833 ; Semper, 1868. Cladolahes 
aureus, Brandt, 1835. 
Habitat . — Cape of Good Hope (Quoy and Gaimard). 
Thyone inermis, Heller, 1868. 
Habitat . — Mediterranean Sea (Heller). 
Excepting a network in the ends of the pedicels, no deposits. 
Thyone andrewsii, Farran, 1852 (according to Kinahan, 1859). 
Habitat . — Ireland (Earran and Kinahan). 
Thyone Jlexus, Hodge, 1865. 
Habitat . — Northumberland (Hodge). 
Thyone elegans, Norman, 1868. 
Habitat . — Shetland (Norman). 
Excepting terminal plates in the pedicels and irregular cribiform plates in the tentacles, 
no deposits. Skin thin, very delicate. Pedicels numerous, scattered all over 
the body. 
