. re : Ney memes” 
216 SHELLS OF SAN PEDRO BAY—WILLIAMSON, 
Genus PTERONOTUS Swainson. 
Pteronotus festivus Hds. 
In tide pools, often inhabited by crabs. 
Genus MURICIDEA Swainson. 
Muricidea barbarensis Gabb. 
One dead example. Mrs. Emma King. 
Muricidea incisa Brod. 
Dead shells common at Catalina; live ones not often collected. 
Rare in the bay. Alive at Laguna Beach, Orange County. 
Genus CHORUS Gray. 
Chorus Belcheri Hds. 
Occasionally found alive in the spring. Often brought in by fisher- 
men. Three young specimens collected at Catalina Island were very 
thick for their size. 
Genus TROPHON Montfort. 
Subgenus BOREOTROPHON Fischer. 
Trophon (Boreotrophon) triangulatus Cpr. 
Two or three dead shells. One splendid specimen, found at San 
Pedro by Miss Hale, and now in the National Museum, is figured in 
Proc. U.S. Nat. Mus., Vol. xtv, Pl. v, Figs. 1, 3, and 6, 1891. 
Family BUCCINID A. 
Genus CHRYSODOMUS Swainson. 
Section KELLETTIA Bayle. 
Chrysodomus (Kellettia) Kelletti, Fbs. (Siphonalia of Carpenter, not of Adams). 
Dead shells rare. Live ones brought in by fishermen. Dredged 
alive in Catalina Harbor. (W. H. D.) The original Siphonatia is iden- 
tical with the much earlier Strepsidura of Swainson, but there is no 
reason to suppose that Kellettia belongs to that group. (W. H. D.) 
Genus MACRON Adams. 
Macron lividus A. Adams. 
Living at low water on Catalina Isiand and Laguna Beach, 
