THE NAUTILUS. 23 



ally disappearing in the dorsal region, where a broad smooth plate 

 separates them from the cardinal teeth ; nacre dead white, except for 

 a small area in the posterior part which is silvery, iridescent. 



Diameter 1.25, length 2, width 1.8 inches. 



Habitat Escambia River, Escambia County, Florida. 



Type in National Museum. 



Remarks : This species is clearly a member of the circulus group, 

 and its southernmost member. Compared with N. circttlus Lea, it is 

 more uniformly inflated, black, longer laterals, teeth all less promi- 

 nent, deeper beak cavity and the superior forward cicatrices are 

 deeper and shorter. It is to be regretted that thus far the type 

 specimen is the only one in hand, and that does not show the beaks, 

 which are much eroded. It is, however, so radically distinct that 

 we do not feel any hesitancy in according it specific rank. 



CORRECTION: In description of U. Harper i Wr., in NAUTILUS 

 for May, p. 6, " N," first line, should be " U." 



( To be continued.^) 



AGASSIZ ASSOCIATION DEPARTMENT. 



[Conducted in the interest of the Isaac Lea Conchological Chapter of the 

 Agassiz Association, by its General Secretary, Dr. W. s. Strode.] 



COLLECTING IN SOUTHERN CALIFORNIA. 



[Extract from the report of Mrs. E. H. King. From the Transactions of the 

 Isaac Lea Conchological Chapter for 1898.] 



I spent the winter and spring of 1898 in Southern California, and 

 visited the seaside a number of times. Redardo, Santa Monico, San 

 Pedro, Terminal Island and Dead Man's Island. I collected a great 

 quantity of fossils (about 20 species) on Dead Man's Island, among 

 them a beautiful Fusns which I prize very highly. At the base of 

 the Island in shallow pools I found a number of living Nassa mendica. 

 The tide came in while we were on the Island and we were com- 

 pelled to return on the sea wall, which is built of huge blocks of 

 granite piled promiscuously. We scrambled over these and often 

 had to jump from one to another, the burning hot sun blistering our 

 faces, but we held on to our shells and finally reached the shore. 

 We were told the sea-wall was a mile and a quarter long. 



