166 



WEST COAST SHELLS 



Fig. 153, X t (*) 



ignored. It has been found 



}:)lentiiully in mud off Catalina 



Island, in 16 fathoms of water. 

 The Two-tinted Amphissa, 



A in phis s a bicolor^ is shown in 



Figure 154. 



The shell is 14 



mm. in length, 



and is of a pale 



straw color, 



with a brown- 

 ish base and a 



brown band. 



Specimens were 

 dredged in various places off the 

 coast of southern California, in 

 quite deep water. 



We now come to the great family of the Muri- 

 cidcz. In the warm waters of the tropical ocean the 

 members of the Murex family take on very bright 

 colors and assume very fanciful forms. With us, 

 however, their representatives are more modest, 

 though many of them are full of interest to the col- 

 lector, while some have considerable beauty. 



As has been already explained in the Preface the 

 names of some of the members of this family are still 

 in a process of adjustment. To prevent confusion, 

 where a new name has been definitely announced by 

 the authorities at Washington it will be accepted, 

 but the old name will also be given in parentheses. 

 In most cases it is only the first, or generic, name 



Fig. 154, X \ (*) 



