148 The Shell-Collector’s Handbook. 
SEMILUNAR.—Crescent-shaped. 
SrssiLE.—Destitute of a pedicle. 
Setaceous.—Bristle-like. 
SHAGREENED.—Granulated. 
SInIstRAL.——Applied to a shell when the spire turns 
towards the left, and the aperture points to 
the right. 
SrnvaTE.— With a strongly wavy or recessed margin. 
Sinvous.— Wavy. 
SPH #ROIDAL.—Shaped like a sphere. 
STRIATE 
STRIOLATE 
SuLcus.—A groove. 
\ Marked with fine lines or ridges. | 
TESTACEOUS.—Shelly. 
TRANSLUCENT.—Not quite transparent. 
TRIANGULAR.—Shaped like a triangle. 
TRILOBED.—Provided with three lobes. 
TrocHoID.—Wheel-shaped. 
TruncaTe.—As if cut off at the apex. 
TUBERCULATED.—Marked with tubercles. 
TuBERCULOUS.—Shaped like a tubercle. 
Tumip.—Swollen, enlarged, inflated. 
TURBINATED.—Top-shaped. 
TURRETTED.—Shaped like a tower. 
ae | —Awl-shaped. 
[LIFORM 
Umpiiicatep.—Provided with an umbilicus. 
Uncurrorm.—Nail-shaped. 
VENTRICOSE.—Swollen. 
Virreous.—Glassy. 
