202 WORMS. TESTACEA. 66. 67. ' 



cula, fpotted with red, and furnished with a* double trumpet- 

 shaped probofcis. ; 



(520. S. triquetm. White or reddish, rugged, creeping, 

 variously twisted, triangular. 



Br. Zool. t. 9 1./. 157. Donovan t. 95. Sow. Misf. t, 31.. 



,SAe//refembJing the last, but is oarinate along -the. back, and has 

 generally the bafe a little fpread, giving it a, triangular appearance 

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

 shaped. proboscis* 



621. S. tubularia. White, .rouod, taper, slightly rug- 

 ged, affixed and convolute, at the smaller end. 



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



Shelly 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 flexuous or convolute at the fmaller. Inha- 

 bitant with double yellowish feathered tentacula annulate with 

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

 burred with pink and green. 



66. TEREDO. Ship-worm. 



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 flexuous, more or less 

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

 . . internal plates, contracting the part to a fmall orifice : aferture 

 orbicular. 



67. SABELLA. 



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

 ted together, with their mouths somewhat funnel- 

 form. 



Donovan t. 139. Br. Zool. t. gz.f. 162. Ellis Corall.p. 90. tab.^. 



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

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

 dilated, refembling a piece of honey-comb. 



624. S. Penidllus. Brown, cylindrical, taper, with an 

 interior smooth coriaceous subpellucid coat. 



Soiverby Misctli. t, 12. Ellis Corall. p. 92. t. 84. 



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

 flexuouj at 'the frnaller end, fometimes faintly wrinkled ; .the 

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

 glutinated : aperture a quarter of an inch wide. 



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

 out internal coat. 



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



Tube folitary, brownish, 2 inches or more long, 3 ejghthst of an 

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

 fmaller, compofed of fine agglutinated fand. 



626. S. C/irysodon. Cylindrical, papyraceous, nearly 

 of equal size throughout, straight, surrounded with 

 branched fibres at the mouth. 



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



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

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

 a tubular membrane -.-aperture furnished with numerous long fibre-- 



