fo.8 WORMS. MOLLUSCA. 40. Derris. 41. Holothuri*. 
Boify hyaline, 2 | inches long, with an opake yellowilh nucl«’'* 
covered with white pellucid gluten: rfl// eftfiform. more th>‘ 
twice the length of the trunk, and furnilhed v/ith a dou^'i 
40j. I)I)RRlSj Body cylindrical, compoli-^^ 
pi articulations: mouth terminal: 
*^anguinea Derris. 
^ranfaa. Linn. Soc. iii. 67. /ai. 13. ifv. t. 2. 
Inhabits the Coaft of Pemhrokejliire, 
cylindrical, gradually tapering to a point behind, compofd 
ot joints and capable of great flexibility ; covered with a men'' 
branaceous tranfparent coat, through which the internal part? 
are viable : head extended beyond the outer skin, lefs tha‘' 
the anterior part of the body, to which it is connefted b/ » 
membranaceous covering forming a neck : feelers white, fit"' 
ated at the top of the head, and capable of being raifed o‘' 
deprefled at pleafure : mouth conflfting of 2 lipj, the upper' 
one hooked and moveable, the lower-one ftraight and fixed- 
- ■ It moves by an undulatory motion of the whole body. 
4-1. HOLOTIIURIA. Body detached, cy 
iindrical, thick, naked, and open at tb^’ 
extremity; mouth furrounded by tlclb}' 
branched b'ntacula or feelers. 
Thefe are all inhabitants of the Tea, and expand or contrafl thcnil 
felves at pleafure: the anterior aperture ferves them both 
a mouth and a yent, and from the hinder one they reje'i* 
waters which had beeii previoufly fucked' in : the tentacula 
rctraftile, 
Erelant. ’^jth 20 branched tentacula ; body papillous, above reddiil’? 
beneath white. . ■ . 
Mull. fqol. Dan. l. p. t.tah. f.fg. 1 — 3. 
Gunner 'AH. Sceckh. 1767. tah. i,. f^. 3. 
Inhabits the Northern Seas, and fquirts out water like a fipi'O''* 
from the lower prifice : 8—1 1 inches long. 
Body varied with red and white : papilU pointed diftant, thob 
of the back difpofed in 6 tows: teutaeula flefliy white, 
tip furniflicd witlr’a tuff of fibres which are' tuh-'r-.-ulai' 
y-jthin. 
VrorM^‘ 
