202 WORMS. TEStfACEA. 66. 67. 



cula, fpotted with red, and furnished with a double frumnet- 

 shaped probofcis. 



620. S. triquetra. While or reddish, rugged, creeping, 

 variously twisted, triangular. 



Br. Zoo/, t. 91./. 157. Donovan t. 95. Sow. Misc. t. 31. 



Shell refembling the last, but is carinate along the back, and has 

 • generaJly the bafe a little fpread, giving it a triangular appearance. 

 Inhabitant with double feathered tentacula, and -a single trumpet- 

 shaped proboscis. . . 



621. S. tubular ia. White, round, taper, slightly rug- 

 ged, affixed and convolute at the smaller end. 



Montague Brit. Shells p. 513. n. 14. 



Shell 4 or 5 inches long, 2 tenths of an inch wide at the larger 

 end, with an orbicular aperture, detached and afcending at the 

 larger end, affixed and fiexuous or convolute at the fmaller. Inha- 

 bitant with double yellowish feathered tentacula annulate with 

 pink, without the trumpet-like proboscis; head long, white, 

 barred with pink and green. 



66. TEREDO. Ship-vcorm. 



622. T.navalis. Extremely thin and brittle, cylindrical, 

 taper, smooth. 



Donovan tab. 145. Philos. Transact. 1806. t. 12. 13. 



Shell 4-6 inches long, whitish, a little fiexuous, more or less 

 obtufe and strong at the tip, finely striate longitudinally, with 

 internal plates contracting the part to a fmall orifice : aperlurc 

 orbicular. 



67. SABELLA. 



623. S. alveolata. With numerous parallel tubes cemen- 

 ted together, with their mouths somewhat funnel- 

 form. 



Donoian t. 139. Br. Zool. t. 92./. 162. Ellis Corall.p. 90. tab. 35. 



. Tubes nearly straight, 2 or 3 inches long, forming large masses, 

 compofed of sand and fine fragments of shells, with their apertures 

 dilated, refembling apiece of honey-comb. 



624. S. P.eniciUus. Brown, cylindrical, taper, with an 

 interior smooth coriaceous subpellucid coat. < 



Sowerby Misceli. r. 12. Ellis: Corall.p. 92. t, 84. 



Tube folitary, 6 'or '7 inches long, nearly straight, fmall and 

 fiexuous at the fmaller end, fometimes faintly wrinkled; the 

 outer-coat compofed of the finest particles of land and earth ag- 

 glutinated : aperture a quarter of an inch wide. 



625. S. granulata. Straight, thin, brittle, tapering, with- 

 out internal coat. 



Donovan £.233. Br. Zool. t. 92./. 163. 



Tube folitary, brownish, 2 inches or more long, 3 eighths* 1 of an 

 inch wide at the larger end, tapering to about half as much at the 

 fmaller, compofed of fine agglutinated fand. 



626. S. Chrysodon. Cylindrical, papyraceous, nearly 

 of equal size throughout, straight, surrounded with 

 branched fibres at the mouth. 



Pall. Mise. Zool. t. 9./. 14-16. Montague p, 546. n. 4. 



Tube folitary, about the size of a goofe-quill, compofed of fand, 

 fragments of shells, or fmall fiat pieces of stone clofely cemented on 

 a tubular membrane : aperture furnished with numerous long fibres, 



