186 TORNATINA. 



narrow, dilated at base; columella spirally one-folded. Alt. 6, 

 dijiin. 3 mill. (Swi.). 



Rio Janeiro. 



T. liratispira E. A. SMITH, Ann. Mag. N. H. (4), ix, p. 354. 



This species is allied to T. knockeri from West Africa, but it may 

 be known from it by its larger size, and the absence of the plications 

 at the upper part of the body whorl ; the columellar fold also is less 

 strongly developed. The very fine ridge in the middle of the sutural 

 channel produces the appearance of a double edge to the whorls 



Some specimens of T. canaliculata show a spiral thread in the 

 sutural channel. 



Species of the Californian and Panamic Provinces. 



a. Shell without spiral striae or color lines. 



b. Upper part of body-whorl vertically ribbed, harpa. 

 bb. Entire shell smooth except for growth-striae, cereali*, inculta, 



infrequens, carinata. 

 aa. Shell large, solid, brown, with spiral striae, culcitella. 



T. HARPA Dall. PL 22, fig. 16. 



Shell small white of four and a half whorls; tabulate and sharply 

 carinate above, characterized by sharp grooves and raised lines 

 parallel with the lines of growth, which extend half over the 

 whorls and become obsolete anteriorly ; apex mammillated, minute, 

 globular, prominent, suture canaliculated. Anterior portion of the 

 last whorl smooth. Last whorl slightly narrower above. Aperture 

 long, narrow, effuse below, with a deep narrow sinus at the suture. 

 Columella thickened with a thin layer of white callus, columellar 

 plait obsolete in the adult, rather prominent in young shells. Car- 

 ina intersected by the grooves and slightly dentate. 



A It. '24, diam. '12 inch. (Dall}. 



Monterey, California ; adhering to the tentaculae of Actinias ; 

 three specimens. 



Tortiatina harpa DALL, Amer. Journ. Conch, vii, p. 136, pi. 15, 

 f. 11 (Nov. 2, 1871). 



This pretty and very distinct species is unlike any other from the 

 coast, and is readily recognized by the characteristic grooves. 

 (Dall). 



