26 
THE VOYAGE OF H.M.S. CHALLENGER 
The following forms are more or less imperfectly known and need to be re-examined. 
They seem to belong to the same group as Synapta inhcerens. 
Synapta viridis [Holothuria), Lesueur, 1824 ; Lamarck, 1840. Hetero synapta viridis, 
Verrill, 1867-1871. 
Tentacles unequal, eight larger with twelve to fourteen digits (pennatulee), and four 
smaller destitute of digits. Body covered with small prehensile tubercles. 
Deposits unknown. 
Habitat. — St. Thomas (Lesueur). 
Synapta Tiydriformis {Holothuria), Lesueur, 1824 ; Lamarck, 1840. Leptosynapta 
hydriformis, Verrill, 1867— 1871. 
Tentacles twelve, equal, with twelve to fourteen digits, united at the base by a 
diaphanous membrane. Body furnished with very small, distant tubercles. 
Deposits unknown. 
Habitat. — Guadaloupe (Lesueur). 
Synapta verrucosa [Chirodota), Eschscholtz, 1829 ; Grube, 1850. Leptosynapta 
verrucosa, Verrill, 1867— 1871. 
Number of tentacles unknown. Each tentacle with nine digits ; the terminal digit 
longer than the rest. Body covered with small reddish warts. Deposits 
unknown. 
Habitat. — Sitcha (Eschscholtz). 
Synapta lumhricoides {Chirodota), Eschscholtz, 1829 ; Grube, 1850. 
Number of tentacles unknown. Each tentacle with eleven digits of almost equal size. 
Deposits unknown. 
Habitat. — Eadak (Eschscholtz). 
Synapta pourtalesii, Selenka, 1867. Synapta viridis, Pourtales, 1851. Leptosynapta 
pourtalesii, Verrill, 1867— 1871. 
Tentacles twelve, with about twenty digits. Deposits nearly of the same shape as 
those in Synapta inlixrens. 
Habitat. — Biscayne Bay in Florida (Pourtalfes). 
The species must be very nearly allied to Synapta inhcerens. 
