WORMS. TESTACEA. 88. Sabella. 613 
Schroet. Jliifconch, tab. \ D- 7 * 
Inhabits ‘Thuringta : about an inch lon^. 
Shell fometimes conic, fometimes cylindrical. 
Shell black, the open end cylindrical and narrower, th? 
"• other part turgid and ovate. 
Schroet.Einl.incovcb.Z.tab\6.fg.zi. r ct , 
Inhabits' above ? inches long, compofed of particles of black 
fand ; within fnjooth. 
Shell roundifh, open at both ends, brittle, membranaceous, 
compofed of very rAinutc grains of fand. 
Schreet. Einl. in coveh. 2. p. i<)l. n. 20. . . ■ , r 
Inhabits flornxay t above 4 i*^fhcs long, and about the thickncls 
of a crow’s quill. 
Shell coarfe, creeping, fragile, open at both ends : the in- 
habitant not furnifhed with tcntacula af the mouth, 
with a prickly jointed body. 
O. Fabr.fn. Groenl. p. 374- «; S^g. . , „ 
Inhabits the deeps of the Greenland feat, hxed to Hones. 
Shell grey, compofed of particles of fand cemented to a fomewhat 
convex membrane, within lubricous, polilhed : inhabitant ru. 
fous annulate with white, beneath paler, with ?i joints, each 
armed on the back with 2 fpines, and 2 other terminal ones 
which are unarmed. 
Shell cylindrical, compofed of capillary fubcylindrical ag- 
glutinated cryftals of quartz. 
Jbildg. Schr. Berl. Naturf. 9. p. 144. tab, 4. 
Inhabits the Indian Ocean. 
ORDER 
