LS 4 
T. ARENARIA.—SaBELLA. A. Mont. p. 532.—Tube 
extremely fragile, free, cylindrical, not tapering, com- 
posed of pure sand, slightly cemented together, without 
an internal membrane. Common on the Dorset coast, 
about the thickness of a Raven's quill. 
T. SuscyLinpRIcA.—SABELLA. S. Mont. p. 552.— 
Tube long, subcylindrical, slender, fragile, not attached, 
composed of fine sand and minute bits of broken shells, 
cemented together on a fine membrane, adhering by 
their flat sides. Diam.0,10. Salcomb bar. 
T. Setrrormis —SaBeiia. 8. Mont. p. 553.— 
Tube free, long, slender, gradually tapering to half its 
diameter, composed of very fine fragments of shells and 
minute flat bits of stone, agglutinated together at their 
edges, lying on each other subimnbricately, and standing 
oblique towards the larger end. 3 or 4. diam. double 
that of a hog’s bristle. Jn sand, Saleomb Bar, Devon. 
T. Curta.—SaBetia. C. Mont. p. 554.—Tube 
upright, affixed at the base to the shingles, near which 
it is merely membraneceous and not covered as else- 
where, by sand and miuute bits of flat stones or uniform 
fine sand on a tough membrane; diameter that of a crow 
quill, slightly tapering. 1. Closely gregarious in the 
inlet near Kingsbridge. 
T. Compressa.—SaBELLA. C. Mont. p. 555,.—Tube 
short, broad, and extremely flat, composed of large 
