*86 WORMS. TESTACEA. 58. Turbo. 



C. With the whorls turning in a contrary direction. 



491. T. hidens. Taper, smooth, brown, pellucid, with 10 

 or 11 whorls slightly crenate in the suture : aperture 

 2-toofhed behind. 



Linnean Tranfactions \\'\\.p. 178. tab. 5./. 3. 



Shell about half an inch long, armed with white minute papillre 

 or denticulations at the juncture of the whorls. 



492. T, laminatus. Taper, smooth, rufous horn-colour, 

 pellucid, with 10 rather raised whorls: aperture 

 attached to the whorl, 2-toothed behind. 



Montague Br. Shells p. 359. tab. 11./. 4. 



Shell 3 1 quarters of an inch long : aperture suborhicular, contract- 

 ed and joined to the body whorl ; lip white, slightly margined 

 and reflected ; pillar not detached from the larger-whorl, furnish- 

 ed with 2 white tooth-like folds. 



493. T. biplicaius. Taper, opake, brown, longitudinally 

 striate, witb 12 or 13 whorls : aperture slightly 

 detached from the whorl, 2-toothed behind. 



Montague Brit. Shells p. 361. teh w.f. 5. 



Shell the size of the last, from which it differs in being strongly 

 striate longitudinally, and in having the angle of the aperture not 

 joining the larger whorh 



494. T. nigricans. Taper, opake, blackish, minutely 

 striate, with 11 or 12 whorls : aperture with 2 rather 

 remote teeth behind. 



Donovan t. 72. Br..Zool. t. 82./. 116. T. perverfus. 



Shell about halfan inch long, refembling the 2 last, but is less, of 

 a black ish-browiy, colour, is very finely striate, and the teeth arc 

 not contiguous,. 



*95. T. labiatus.. Taper, opake, light brown, longitudi- 

 nally striate: aperture 2»toothed, with a dilated 

 thick white margin. 



Montague t. tx.f. 6. Da Costa tab. 5./. 15. 



Shell 5 eighths of an inch long, with numerous strong regular 

 striae : whorls g,.flat,.feparated by a fine obfeure line : aperture fub- 

 orbicular, with a sinus at the upper end, and furnished with 2 

 tooth-like laminae; pillar a little detached from the larger 

 whorl.. 



496. T. perversus. Taper, pellucid, yellowish-horny, 

 obscurely striate*, with 8 or 9 slightly rounded 

 whorls : aperture toothless. 



Montague I. w.f. 12. Linn* Tr. viji. f. 5./. 2. 



Shell a quarter of an inch long, rather obtufe • aperture fuborbi- 

 cular, with an obfeure knob in the older-ones : pillar not detached ; 

 the edges thin, white. 



491. T. Vertigo, Oval, opake, brown, obtuse, with 5 

 faintly striate whorls : aperture somewhat triangular, 

 toothed. 



Montague Brit. Shells, p. 363. tab. 12./. 6. 



Shell hardly a line long, generally with 3teefh, one on the lip, 

 and two on the pillar, with a protuberance at the angle of the lip ; 

 fometimes with 6 teeth, and even with the rudiments of a feventh: 

 aperturt slightly margined, indented. 



