THE NAUTILUS. 41 



Columbella aurantiaca Dall. Between tides ; rare. 



Columbella tuberosa Carpenter. Low tide to fifteen fathoms ; 

 common. 



Columbella gausapata Gould. Common from the shore line to 

 12 fathoms. 



Columbella gausapata, var. carinata Hinds. With the preceding 

 and in greater numbers. 



Murex carpenteri Dall. 12 fathoms ; one of the finest species in 

 the Bay. It is very different in appearance from the M. carpenteri 

 of San Pedro. 



Murex petri Dall. A few young shells referred to this species by 

 Dr. Dall were dredged with M. carpenteri and the Calliostoma in the 

 blue-clay region. 



Murex foliatus Marty n. 12 fathoms ; with the preceding; three 

 or four splendid examples. 



Murex nuttalli Conrad. At low tide. 



Murex {Ocinebra) barbare?isis Gabb. 12 fathoms ; two good live 

 and several dead shells. 



Murex { Ocinebra) squamuliferus Carpenter. Two living examples 

 dredged with the preceding. 



Murex {Ocinebra) gracillimus Stearns. Between tides. 



Murex {Ocinebra) circumtextus Stearns. Fairly common at low 

 tide. The specimens run much larger tlian in the southern part of 

 the state. 



Murex {Ocinebra) luridus Middendorf. Between tides; rather 

 common. Specimens were found connecting this species with the 

 following variety. 



Murex {Ocinebra) luridus, var. asperus Baird. Between tides; 

 not common. 



Murex {Ocinebra) luridus, var. mundus Carpenter. Between 

 tides ; less common than typical luridus. 



Murex {Ocinebra) interfossus Carpenter. Shore to 15 fathoms ; 

 not uncommon. 



Murex { Oc inebra) peritus Hinds. One living specimen found at 

 low tide. 



Murex ( Ocinebra) subangulatus Stearns. Low tide ; one specimen. 



Purpura saxicola Valenciennes. Between tides; very common. 



Purpura lima Martyn. Between tides ; rare. 



Monoceros lapilloides Conrad. Between tides. 



