THE NAUTILUS. 71 



cotton batting, long rubber boots, an immense sun bat, a cbisel to 

 detach Haliotis shells from the rocks, etc. 



I arrived here at seven in the evening and although the trip doAvn 

 was rough, and our little "tub "rocked dreadfully, causing me to 

 be sea-sick, it nevertheless did not prevent me from starting right in 

 and collecting as soon as my feet rested on terra firma. On that 

 evening, I began collecting at seven o'clock and as it was very light 

 at that hour, I continued to collect along the beach until eight. I 

 am very glad I did so, as it netted me some beach-washed species 

 which I have not come across since. 



I selected a week when the early morning small low tides 

 occurred. Thus, one morning I devoted to the collection of Hali- 

 otis cracherodii, another morning I went in search of Littorina 

 planaxis, another for Chlorostoma costatum, Acmrea scabra, Nassa 

 mendica, etc. 



During this second week, when no morning low tides have 

 occurred, I have gone among the rocks, gathering any and every 

 species which was so unfortunate, nay, I should say, fortunate, as to 

 be placed within my reach. 



Priene Oregonensis Redf will be noted as having been collected 

 here. I do not as yet understand how this large and beautiful 

 northern shell should be found so far south. It could not have 

 drifted into the bay, as it was a fresh, perfect-lipped specimen. 



I may also mention that in a letter recently received from Mrs. 

 M. Burton Williamson, of University P. O., Cal., that lady informed 

 me that Psammobia rubro-radiata Nutt., fe not found north of San 

 Pedro Bay. As will be noted, I found one specimen, alive and per- 

 fect. It is truly a beautiful shell. The inside of both valves 

 resembling delicate porcelain. 



I am exceedingly sorry to think that I have no dredge here with 

 me, as I feel positive I could gather at least five times as many 

 specimens as I have already collected. 



In the following list, the number of specimens taken is given 

 after each name, and will serve to show the relative abundance of 

 the species. 



Arionta californiensis Lea, 51 ; dupetithouarsi, Desh., 4 ; nicklin" 

 iniana, Lea, 1. Acm?ea asmi Midd., 33; mitra Esch., 11 ; patina 

 Esch., 5 ; pelta Esch., 2 ; persona Esch., 2 ; scabra Nutt., 2 ; spec- 

 trum Nutt., 6. Amphissa corrugata Rve., 64. Astyris gausipata 

 G-ld., 12. Bittium filosum Gld., 24 ; filosum Gld. var. esuriens 



