120 THE NAUTILUS. 



and Dr. Paul Bartsch of the U. S. National Museum, and I am 

 under many obligations for their kind assistance. 



The specimens were picked up in a general way and no special 

 effort was made to secure large series or the minute species. 



As my residence is in the extreme northern part of Maine 

 and I have only a small library on shells, I will follow Bulletin 

 No. 37, U. S. National Museum, by William H. Ball. Al- 

 though the classification is not up to date, it has a great ad- 

 vantage as nearly all are familiar with the names used in that 

 work. 



In December, 1891, around Jacksonville I obtained many 

 dead specimens of Polygyra vannostrande Bid. and P. jejuna Say, 

 and in the St. John's River Vivipava georgiana Lea and Cyrena 

 carolinensis Lam. 



In January, 1892, I made two trips to Pablo Beach on my 

 first visit going towards Mayport. For a distance of four miles 

 the beach was covered with the large valves of Cardium magnum 

 Born; such a mass of shells I had never seen. On my second 

 visit, a week later, there was not a Cardium to be found or 

 hardly anything in the line of shells. The two trips to Pablo 

 Beach yielded the following species: 



Purpura floridana Conr. Two specimens. 



Labiosa (Raeta) canaliculata Say. Three single valves. 



TeUina alternata Say. Five perfect specimens. 



Dosinia discus Rev. Four fine specimens. 



Petricola pholadiformis Lam. One single valve. 



Pholas costata Linne. Single valves common. 



Pinna seminuda Lam. Common. 



Pinna muricata Linne. Common. 



Donox variabilis Say. The sand at low water mark was filled 

 with these shells. 



Area incongrua Say. Few fine specimens. 



Area ponderosa Say. Two living specimens. 



Cardium robustum Sol. Common. 



In the month of February I started on a four weeks trip from 

 Jacksonville to Titusville by rail, and then by steamer the whole 

 length of Indian River to Jupiter and Lake Worth. While 

 examining the limestone outcrops at Rock Ledge on Indian 



