Worms. MOLLUSCA. 2J. Onchldium. 23. Lapllfia. 75 
Found early in the fpring in hollows of woods, filled with dry 
leaves: lo lines long; whitilh with a yellowilh cai . 
I 
*^anceoIa^ Linear-lanceolate and very (harp at each end ; the margin 
furrounded with a membranaceous border : tentacula 
or feelers o. 
Pall. Spicil. Zool. 10, p. 19> ^S' • r' 
Found on the coaft of Cornivall: of a very uncertain (ienus. 
22. ONCHIDIUM. M;; oblong, creeping, 
flat beneath : mouth placed betore : Jeel- 
ers 2, fituate above the month; arms 2, 
at the ficles of the head : vent betiind, 
and placed beneath. 
Onch. I £ . 
Inhabits Be>,gal. on the leaves of thv Typha elephmtina . about 
an inch lo^ng and i of an inch broad, but linear 
when creeping, in appearance it very 
max, but ditfers principally in wanting the (hield and lateral 
pore, and in being furniihed with a vent behind. 
bL above convex, ath-colour. and covered with irregular g.|«- 
dular tubercles j beneath fiat and imooth : W ycibi'">(h, 
fmall and placed beneath, which when the animal is in mo- 
tion is perpetually changing its form and lize, and dr. wn 
in when at reft: mouth placed lengthways and continually va- 
xying us (hape from circular to linear: faen retrace, re- 
fLbling thofe of the Slug, and apparently tipt with ey^ 
arms dilatable.-folid, comprclfed and foiticwhat palmate wl*ft 
fully expanded. 
23. LAPLISIA. Body creeping, covered with 
redebted membranes, with a membrana- 
ceous fliiekl on the back covering the 
lungs: aperture placed on the right fide: 
vent above the extremity of the back ; 
feelers 4, refembling ears. Sea-hare. 
^P‘htn, Body pale lead-colour, immaculate. 
Petmant Brit. 7 .oal.\'t . tab. 21, fig- 21. 
Barbut'i Genera of IVorms, p, 32, tab. 3, fig. 5»^' 
Sela Mil/. 3. tab, j, Jig. 8, 9. 
K 2 
Inhabits 
