OF CONCHOLOGY. 301 



5. Hemisin'us simplex, Tryon. — t. 20, fig. 7. 



Description. — Narrowly conical, smooth, spire elevated, apex 

 obtuse, suture scarcely impressed; whorls 5, rapidly increasing; 

 aperture narrow-ovate, angulate at both ends, columella slight- 

 ly thickened, body-whorl without callus. Light olive, bor- 

 dered with yellow below the suture, and with perpendicular 

 zig-zag red stripes. 



Dimensions. — Length 17, diam. 9 mill. 



Habitat. — Quito, (Sr. Patricio Ma. Paz.) 



My Cabinet. Cabinet of Sr. Paz. 



Observations. — More slender, and differently colored and 

 marked from H. Pazi. The aperture is also different at the 

 base. It is a very showy species, of which I have seen several 

 specimens. 



