1912.] natural sciences of philadelphia. 51 



Maryland. 



Most of my own collections were made in Cecil County, while a 

 few smaller ones are from Baltimore. In that city I have also 

 examined many market fishes, especially those alleged to have been 

 taken in Chesapeake Bay. Mr. E. G. Vanatta made collections at 

 Chestertown, and Messrs. Hermann Behr and T. D. Keim at 

 Jennings, in Garrett County. 



Petromyzon marinus Linnaeus. 



Abundant in the spring and in early June in Clearwater Brook 

 at Bacon Hill, tributary to the Elk River basin. In this stream I 

 have secured many young, and also in the Little Bohemia Creek. 

 Fishermen say lampreys are abundant in the Elk and North East 

 Rivers and at Rock Hall. 



Acipenser sturio Linnaeus. 



Scarce now in the Elk, North East and Susquehanna Rivers. 

 I have seen examples in the Baltimore markets, though none now 

 in our collections. 



Lepisosteus osseus (Linnaeus). 



A small mounted example recently examined, though not obtained 

 for our collection, was taken in the Elk River. This fish was rather 

 abundant at times about the fisheries along the North East River. 

 Pomolobus mediocris (Mitchill). 



Runs in the Elk and North East Rivers, also Little and Big Bohemia 

 Creeks in their lower reaches. A number of examples examined at 

 the fisheries and in the markets of Baltimore. This fish, also P. 

 cestivalis and the next, are taken at Rock Hall. 



Pomolobus pseudoharengus (Wilson). 



Abundant in the Elk, Bohemia, North East and Susquehanna 

 Rivers, and ascending well above tide or in the small fresh branches. 

 The multitudes examined were from the Little Bohemia Creek, 

 Bohemia Mills, Big Bohemia Creek, Bohemia Bridge, Elk Neck, 

 North East, and from Chesapeake Bay (Baltimore markets). 

 Alosa sapidissima (Wilson.) 



Runs in the larger streams, as the Elk, Bohemia, North East and 

 Susquehanna Rivers, from all of which I have examined material. 

 I have collected, however, only young examples in the Little and 

 Big Bohemia Creeks, and at Elk Neck and North East. In the 

 fishing season many fine examples may be seen exposed in the Balti- 

 more and other markets. 



