256 



POPULAR CONCHOLOGY. 



This genus chiefly inhabits the Indian and 

 Chinese seas; it is also found in the 

 Black Sea and the Mediterranean. 



122. Terebellum. — Shell oblong, 

 smooth, and convolute ; spire pointed ; 

 sutures not channelled ; mouth narrow 

 and long ; right lip rather sharp, left 

 lip quite smooth. Animal unknown. 



— 1 species recent, and 2 fossil. 

 These shells are brought from the 



Indian seas ; they are thin, delicate, and 

 prettily marked with bands and cloudy spots. 



123. Ancillaria. — Shell 

 oblong and very smooth; spire mf\ 

 pointed ; sutures not channelled, B|f'/Jm 

 but nearly effaced ; mouth wide 

 and long ; right lip sharp; left ^p , !'; 'l 

 lip having the base thickened, pJ7 / 

 with a shelly ridge. Animal al- ^ 

 most unknown ; the foot, however, is very large. 



— 4 species recent, and 5 fossil. 



This genus is chiefly confined to tropical 

 climates; the shells are smooth, and highly 

 polished, presenting a surface infinitely more 

 even than if produced by artificial means : some 



