220 TURBO. TURB.1N. 



attach to the body of the volution : length more th;iu a 

 quarter of an inch ; breadth not half its length. 

 At the roots of juniper bushes : very rare. 



C,9. Turbo Muscorum. Cylindrical Turban. Y\<*.' r j'6. 



Montagu, pi. 22. f.3 Da Costa, pi. 5. f. \C> Donovan, 

 pi. m Dorset Oct.. pi 21. f. 16. 



Shell nearly cylindrical, very obtuse, dark horn-color, 

 glossy, transparent : spires six, rounded and well defined 

 by the separating line, finely striate or wrinkled longitudi- 

 nally : aperture somewhat orbicular, a little produced at 

 the base, with abroad Hat glossy- white margin, and a tooth 

 close to the front of the mouth and placed near the outer- 

 lip, appearing as if it were a curved continuation of the outer 

 rim ; pillar-lip with a large and deep perforation behind it : 

 length rather more than the eighlh of an inch ; breadth a 

 third of its length. 



The unformed shells have the base and the aperture 

 shaped much like a Trochus. 



Among dry moss ; under stones ; and in old walls, v.v. 



70. Turbo Chrysalis. Aurella Turban. 



Shell cylindrical, very obtuse, nearly opake, yellowish 

 white or pale horn-color : spires seven, rounded, wrinkled 

 and shaped like the last : aperture orbicular, inclining to a 

 crescent-shape, and not produced at the base ; the outer 

 edge very thin, and not in the least margined, on the back 

 of which is a strong raised rounded rib extending from the 

 outer angle to the perforation behind the pillar ; the tooth 

 is either very obscure or very minute, placed far within the 

 mouth, exactly in the centre between the two I'-ps, and not 

 near one side as in the last : length two-tenths of an inch ; 

 . breadth not a third of its length. 



This species, so very distinct from T. Muscorum, and 

 for which it has questionless been overlooked, is an inha- 

 bitant of the banks of rivers and marshy Huts subject to be 

 overflowed, and from whence they are carried clown by 

 floods. It is never found mixed with the last, from which 

 . it may be known at a single glance, by its larger size, more 

 cylindrical form, and yellowish-white or cream-colored, hue. 



The 



