1911.] NATURAL SCIENCES OF PHILADELPHIA. 13 



upland streams, such as the Christiana basin. It does not apparently 

 descend so far below and into the tidals as the next species. Many- 

 examples examined from the Brandywine basin at Wilmington and 

 the White Clay Creek at Newark. Dr. Burgin says it was abundant 

 several years ago in the canal at St. Georges. 



Eupomotis gibbosus (Linnaeus). "Sunfish. Yellow-belly." 



Common in most all fresh waters and approaching near to the lower 

 tidals, though I have not seen any from salt or brackish water. Many 

 examples examined from Naaman's Creek, Holly Oak, Shellpot Run, 

 Wilmington, Armstrong's Creek, Delaware City, Millsboro and 3 miles 

 below in the Indian River, Milford, Laurel and Marydel. 



Mioropterus dolomieu Lacepede. " Small-mouth Bass." 



Introduced in fresh water on account of its excellent game and 

 food qualities. My specimens from Wilmington. 



Mioropterus salmoides (Lacepede). "Large-mouth Bass." 



Introduced like the preceding, and though attaining a larger size 

 and valued as food, it is usually less esteemed by anglers. I have 

 examined a number of large examples at Millsboro. 



Peroa flavesoens (Mitchill). "Ring Perch." 



Usually abundant in fresh tidal regions. Dr. Phillips found it 

 common in the canal at St. Georges, and I found it in Naaman's Creek, 

 Armstrong's Creek and Laurel Creek at Laurel, though almost all these 

 examples were small or of moderate size. 



Boleosoma nigrum olmstedi (Storer). 



Usually found in clear shallow water, preferably on sandy or gravelly 

 bottoms, though often among weeds. Very abundant in the Chris- 

 tiana basin. I have examined many examples, those obtained by 

 Cope in "Sussex County" and Dr. Arrott at Fort Delaware, besides 

 those I secured myself in Naaman's Creek, the Brandywine basin at 

 Wilmington, the White Clay Creek near Newark, and the Choptank 

 headwaters near Marydel. All my examples were obtained above 

 tide. 

 Boleiohthys fusiformis (Girard). 



Abundant in almost all lowland fresh waters, at least above tide. 

 It is rather seclusive, and to be found usually associated with Erimyzon, 

 Aphredoderus, Enneacanthus, Mesogonistius and similar fishes. Many 

 examples, besides those Cope obtained in Sussex County, examined, 

 from the Mispillion Creek at Milford and Laurel Creek at Laurel. 



Roccus lineatus (Bloch). "Striped Bass." 



Large examples are sometimes captured during the spring in shad- 



