92 WORMS. MOLLUSCA. 31. Afcidia. 
Barbata. — Lateral briftles fafciculate: probofcis o. 
Mall. Wurm. p. So. ta. 3. figet—3e | 
Found in the wet hollows of damp woods; 4 lines long, and is 
generally found adhering to fnails. 
Body furnithed with hairs beneath, each fegment with 4 diver- 
gent briftles each fide : gyes 2, black. | 
Caca. Lateral warts briftly: eycs o. 
Mull. Zool. Dan. prodr, 2653. 
Inhabits Northern Seas, and is probab'y the fame as Nereis czca, 
Listorglis, Lateral briftles either o, fingle, double, or fafciculate, 
Mutt. Zool. Dan. 2, tab. 80, fig. 1—8. 
Inhabits the fandy fhores of Copenhagen. 
Body long, filiform, equal, red, very fragile and compofed of nu- 
'' merous crowded annulations, with 16, 30, 37 fegments, each 
furnifhed with a lateral briitle, 
Marine. Body with fingle lateral briflles, and furnifhed with an cx- 
oe fertile tube. . ut 
O. Fabr. fn. Gran] p. 31$. n. 295. 
lahabits fhores of Greenland, under marine confervz; har: 
an inch long, and refembles Nereis prolifera. : 
Body whitith with a ycllowifh-; rey line down the middle, above 
convex, beneath flat, and pointed behind : ejes z. 
Quadriof. Lateral warts bifid and briftly: abdomen furnifhed with 
pidata. cirri. tai! 4-clett. v ig 
O. Fabr. fu. Grenl p 315. n. 296. 
Inhabits fand, co:ft« of /ce/ané, under ftones: 21 inches long. 
Body compofed of 104 annular iegments, iometimes pale red, 
Íometimes reddifh grey with a longitudinal purple line. which 
is of a richer colour beneath ; tapering towards both epds, and 
flatter beneath: eyes and feelers 05. tail ending in 4 procefies, 
31. ASCIDIA. Body fixed, roundifli, and 
apparently iffuing from a fheath:  afer- 
tures 2, generally placed near the upper 
end, one beneath the other. 
Thefe are found in the fea, and adhere by their bafe to rocks, 
‘fhells, and other fubmarine fubftances: they are more or leís 
gelatinous, and have the power of íquirting out the water 
they take in: íome'of them are efculent ; mot of them feffile, 
though a few ire furnifhed with a long ftalk or tubuler ftem, 
4 They alternately contract and dilate themfelves, . 
x . 5d | Papill 
