MARINE UNIVALVES 



137 



call up these many and other fairy forms from their 

 homes below. 



Cancellaria crawfordiana^ Dall, Crawford's Can- 

 cellaria, Figure i lo, is another fine species which 

 has been dredged alive in Drake's Bay and Monterey 

 Bay. The surface of the shell is pale brown and 

 rough, while the throat is pure white. Its length is 

 about an inch and a half. It is to be hoped that 

 many more specimens of this fine shell may be 

 brought to the surface by careful dredging. 



Another rare shell belonging 

 to the same genus is shown in 

 Figure 1 1 1 . Its name is Cancel- 

 laria middendorifiana^ Dall, 

 Middendorff's Cancellaria. It 

 comes from the far north, being 

 found in Bering Sea and vicin- 

 ity. Its white shell is only 17.5 

 mm. in length, and it is covered 

 with a pale yellow epidermis. 



One fine summer morning ^. ,,, ., ,^. 



^ Fig. Ill, X r (*) 



some years ago I rose very early, 

 took my long rubber boots, an old hoe and a basket, 

 put a few crackers in my pocket, and silently stole 

 away from the little tent where the rest of my family 

 were continuing their slumbers. I followed the long 

 path which led along the cliffs, here coming down 

 close to the shore and there cutting off a sharp head- 

 land of rocks, till I reached my destination. This 

 was a strip of sandy beach from which the water 

 had all receded, for it was at the very lowest ebb of 

 the early tide. I sat down upon a rock, took a 



