190 SHELLS OF LOWER CALIFO-RNIA— STEARNS. vol.xvii. 



Magdalena Bay; Loreto. Sta. Marg:aiita Island, living, Albatross. 

 Kanges from Santa Barbara Islands to Acapulco and Panama.? 



CYPR^A (TRIVIA) RADIANS, Liimarck. 



A few specimens. 



Tres Marias (No. 46320, U. S. N^. M.) ; also from Altata, on the Gnlf 

 (No. 46321, U. S. N. M.), A. J. Gove. Reported from Gnacomayo and 

 said to extend to " Ecnador and Pern." 



CYPR.EA (TRIVIA) PIILLA, (las koine. 



Rare, beach, three examples. 



Tres Marias {No. 46312, U. S. K. M.) ; Mazatlan (I^o. 46313, U. S. N. M.). 

 The single specimen from Mazatlan was collected by the late Henry 

 Edwards. A rare species. Also credited to the Galapagos Islands. 



CYPR.EA (PUSTULARIA) PUSTIILATA, Lamarck. 



Six examples, 



Tres Marias (No. 46334, U. S. N. M.) ; also Altata (No. 46335, U. S. N. 

 M.), A. J. Gove. Ranges sontherly to Acapnlco and Panama. 



ERATO COLUMBELLA, Meiike. 



Rare, living, two examples. Mnlege Bay (No. 46346, U. S. N. M.). 



This locality carries the above further up the Gulf than before 

 reported. Its northerly limit appears to be Monterey, Cal. Occurs 

 also at Acapulco, to the south. 



Family StrombidtE. 



STROMBUS GALEATIJS, Wood. 



Three examples, immature, beach, fresh. Tres Marias (No. 55644, 

 U. S. N. M.). 



In the adolescent stage the above, like other strombs, resembles the 

 cones. The young of this species, as seen in the foregoing example, is 

 beautifully mottled with white, on a warm yellowish-brown ground. 

 In point of size this is the west coast analogue of the Antillean S. 

 gigas; the largest specimen of galeatus that I have seen is much smaller 

 than the average of the West Indian form ; they are entirely unlike in 

 specific characters, such as sculpture, color, etc., the Antillean species 

 far surpassing its west coast relative in beauty of coloring as well as 

 in size. >S'. galeatus is less numerous in the region where it occurs 

 than is 8. gigas in Antillean waters. 



STROMBUS GRANULATUS, S w a i u s o n , 

 Several specimens. 



