TURBO. TURBAN. 209 



eight or nine, rounded and deeply divided, rather obtuse 

 at the point, crossed by from fifteen to twenty extremely 

 delicate thin raised ribs or foliations, which are close-set 

 and run down the whole length of the shell in a rather ob- 

 lique direction : aperture a little inclining to oval, and 

 slightly margined : length half an inch ; breadth hardly 

 the eighth of an inch. 



Western coasts, Dublin bay, and Scotland, v. m. 



3^. Turbo elegantissimus. Splendid Turban. 



Mnitagn, pi. 10. f. 2- Walker, f. 39. 



Shell very slender and tapering to a fine point, white, 

 semitransparent, sometimes covered with a brown skin : 

 spires from nine to thirteen, flat but well defined, with equi- 

 distant flattish obl'que ribs running the whole length of the 

 shell, and which are broader than the spaces between them ; 

 aperture nearly orbicular, a little angular at the upper and 

 lower ends ; the inner-lip a little reflected, but without per- 

 foration : length about a quarter of an inch ; breadth not a 

 fourth of its length. 



Western coasts, and Dublin bay. v. v. 



39. Turbo simillimus. Similar Turban. 

 Laskey, IFern. Soc. i. pi. 8. f. 15. 



Shell slender, white, pointed : spires eight or nine, 

 hardly raised, with fourteen ribs or elevated striae, which 

 run in a straight direction along the shell, and are not 

 broader than the spaces between them ; these ribs are 

 slightly arched, and a part of the larger volution is smooth : 

 aperture somewhat oval : length three-eighths of an inch; 

 breadth not an eighth. 



On the shores of Jura : very rare. 



40. Turbo unicus. Pointed Turban, 

 Montagu, pi. 12. f. 2 Walker, f.40^ 



Shell slender, finely pointed, transparent, glos sy- white \ 

 spires nine, rounded and well defined by the separating 

 line, with numerous fine nearly straight longitudinal ridges^ 

 which are slightly undulated, and the spaces between theni 

 crossed with minute transverse striae, which are hardly 

 discernible unless much magnified : aperture somewhat 

 T 3 orbicular. 



