SHELLS WITHOUT CANALS 



205 



Fig. 198, X I {*) 



high, and its surface is nearly 

 smooth. Most specimens are 

 chestnut - brown throughout, 

 but some have bancis, as is 

 shown in the figure. The colu- 

 mella is broad and white. 



Closely allied to the litto- 

 rines are the little Chink- 

 shells, a little picture of one 

 of them being shown in Figure 

 1 99. Its name is Lacuna imi- 



fasciata^ Cpr., the One-banded Chink-shell. 



It is a very little thing, about one-sixth of an 



inch in length, and it consists of but few 

 Fig. 199 whorls. Externall}^ it is brown and glossy, 



with the color broken into dots on the keel 

 of the body- whorl. The aperture is semi-lunar in 

 shape, and the flattened columella has a small um- 

 bilical fissure, from which circumstance it receives 

 its name. It is well worth looking for, and may 

 often be found on sandy shores, while living speci- 

 mens may sometimes be gathered at low tide. 



Lacuna porrecta, Cpr., the Wide Chink-shell, re- 

 sembles the last figure, but is broader and more com- 

 pact. The umbilical chink is large and the outer 

 lip is extended. It is found living on kelp. 



Lacuna solid ula, Lov., the Solid Chink-shell, is a 

 species found chiefly in the north. It is large, having 

 a shell nearly half an inch long. There are three or 

 four whorls, smooth and strong. The umbilicus is 

 small, the columella white in color, though the gen- 

 eral surface is brown. 



