226 TURBO. TURBAN. 



the mouth, strongly and regularly striate longitudinally in 

 a nearly straight direction, with nine flat volutions divided 

 by a very fine line only : aperture somewhat orbicular, with 

 a deep impression at the upper end ; the margin very broad, 

 thick, white, and much reflected ; pillar-lip a little detached 

 from the body, with two tooth-like folds : length five-eighths 

 of an inch : breadth one-eighth. 



In Hyde Park, and Battersea : very rare. 



84. Turbo perversus. Reversed Turban. 



Montagu, pi. 11. f. 12 Linn. Trans, viii. pi. 5. f. 2-r- 

 Dorset Cat.pl. 19. f. 11. 



Shell slender, tapering to a rather obtuse point, yellow-, 

 ish or greenish horn-color, obscurely wrinkled longitudi- 

 nally but not 1 regularly striate, with eight or nine rather 

 rounded and deeply divided volutions : aperture somewhat 

 orbicular, with a thin white margin ; the outer-lip a little 

 reflected ; pillar-lip not detached nor reflecting on the 

 body, generally without teeth, but in old shells may be ob- 

 served an obscure round knob or tubercle at the edge of the 

 upper angle : length about a quarter of an inch; breadth a 

 fourth of its length. 



On the trunks and in the bark of trees, and in old walls. 

 v. v. 



85. Turbo Vertigo. IFry-mouthed Turban. 

 Montagu, pi. 12. f. 6. 



Shell oval or somewhat cylindrical, obtuse, brown, 

 opake, with five rather rounded and well defined volutions, 

 faintly striate longitudinally : aperture somewhat triangu- 

 lar j with the angles rounded, slightly margined and in- 

 dented or toothed, with one white tooth on the outer-lip, 

 and two on the pillar, besides a laminar protuberance at 

 the angle of the outer-lip : sometimes there are six teeth, 

 and even the rudiment of a seventh : length half a line:, 

 breadth half its length. 



It has much the contour of T. sexdentatus, but is less,; 

 has.the volutions reversed, and differs much in the aperture 

 and teeth. 



Ivy-clothed walls at Sandwich, and drifted sand of tb& 

 Avon. v. m. 



I. Flat, 



