WORMS. TESTACEA. 58. Turbo. 179 



3r. Zool. t. 81. /. 111. 111. A. Donov. t. 28. Z> Costa t. 7.f. it. 



Shell an inch and a half long, whitish, fometimes mixed with 

 brown or ferruginous : wkorls rounded, feparated by a deep 

 groove : aperture margined. 



43!. T. Clathratulus. Taper, with 5 or 6 whorls and 

 about 15 approximate longitudinal ribs. 



Mams Microsc. t. 14. /. 19. Walk. min. Shells f. 45. 



Shell minute, white, opake, refemhling the last, except in size, 

 number of whorls and difposition gf the ribs : aperture margined. 



43^. T. niiidissimns. Taper, acute, pellucid- white, with 

 9 smooth much raised and rounded whorls. 



Montague Br. Shell F p. 299. tab. i2.y. i. 



Shell one tenth of an inch long, very slender, with the whorli 

 much fwollen and feparated by a deep depression. 



433. T. unicus. Taper, acute, pellucid white, with 9 

 rounded and raised whorls finely striate longitudi- 

 nally. 



Montague t. 12./. 2. Walker f. 40. Adams t. \\.f. 7. 



Shell 2 tenths of an inch long, with the striae fomewhat undulate, 

 the intermediate fpaces with extremely fine tranfverfe ones: aper- 

 ture inclining to oval. 



43 i. T . dupticatm. Taper whitish, with 1 4 or 1 5 whorls 

 each marked with 2 prominent acute transverse 

 ridges. 



Br. Zool, t,-8i.f. 112. Donovan t. 112. Da Costa t. 6./. 3. 



Shell 2 inches and a half long, finely striate acrofs between the 

 ribs : aperture-fubov&l. 



435. T. subtruncatus. Tapering to an obtuse point, 

 pellucid yellowish-white, with 6 or 7 swollen smooth 

 whorls. 



-Montague Br. Shells f. 300. tab. io./. i. 



Shell 2 tenths of an inch long, fometimes with a few faint lon- 

 gitudinal striae : aperture inclining to oval. 



436. T. truncatus. Cylindrical, glossy, pellucid, horn- 

 colour, with 4 smooth swollen whorls, abrupt as if 

 truncate at the point. 



Montague Brit. Shells p. 300. tab. to./. 7. 



Shell 2 tenths of an inch long, rarely with a few longitudinal 

 striae, or crenulate in the futures : whorls feparated by a deep line : 

 aperture slightly margined, fuborbicular. 



437. T. littoreus. Suboval, pointed, spirally striate ; the 

 first whorl very large: outer-lip thin and spread- 

 ing. 



Perriwinkle. Br. Zool. t. 81. /. 109, Donovan t. 33. /. i. 2. 



'Shell about an inch long, with about 5 whorls feparated by a 

 fine line, various shades of red brown or yellow, plain or fpirally 

 banded with various colours : aperture fuborbicular, 



438. T.jugosus. Suboval, tumid, with 4 spirally grooved 

 whorls ; the first very large : outer-lip thin, slightly 

 crenate. 



Montague Suppl. t. 20. /. 2. L. Trans, viii. t. $./. 7. 



Shell 3 eighths of an inch long, not much pointed, dull yellow or 

 fulvous, with fometimes a greenish or purple cast, with white 

 grooves : pillar broad, fmooth. 



439. T. tenebrosus. Subconic, rather obtuse, dark choco- 



