10 PROCEEDINGS OF THE ACADEMY OF [Jan., 



City, Brown's Branch near Harrington, and the Choptank headwaters 

 near Marydel. 



Esox reticulatUS Le Sueur. "Pickerel." 



One of the most valued food-fishes, though its game qualities are 

 generally best exhibited after it has been hauled into the boat. Dr. 

 Phillips found it in fresh w r ater near Rehoboth, and it is also said to 

 have been abundant in the canal at St. Georges. Many examples 

 from Millsboro, Milford, Brown's Branch near Harrington, Laurel 

 and Marydel, were examined. 



Umbra pygmsea (De Kay). " Mud Minnow.'' 



A seclusive little fish, often found buried in the muddy bottoms of 

 little pools, or in quiet weedy or choked-up coves, always in fresh 

 water. Dr. Phillips found it in fresh water near Rehoboth and 

 Dr. Burgin has taken it in Bellevue Creek and near Bombay Hook. 

 My numerous examples from Newcastle, Delaware City, Rehoboth, 

 Brown's Branch near Harrington, and Laurel. 



Fundulus heteroclitus maorolepidotus (Walbaum). 



Abundant in almost all tidal waters as well as the costal salt ponds 

 and ditches, where in many places they swarm by the thousand. 

 My examples from Naaman's Creek, Holly Oak, Claymont, State Road, 

 Armstrong's Creek, Red Lion Creek, Delaware City and Rehoboth. 

 Doubtless F. majalis is abundant, as reported, about Lewes and 

 Rehoboth in salt water, though I have no examples. 



Fundulus diaphanus (Le Sueur). 



I have not found this species out of fresh water, though it ranges 

 down close to the ocean. Abundant in Naaman's Creek, Wilmington, 

 Delaware City, Rebohoth and Laurel, where I have obtained many 

 examples. 



Cyprinodon variegatuB Lace"pede. 



Abundant about Lewes and Rehoboth. It enters fresh water near 

 the seaj though usually not beyond the reach of tide. My examples 

 collected by Dr. Phillips at Rehoboth. 



Gambusia gracilis (Heckel). 



This little fish has been credited with ranging as far north as Dela- 

 ware, on the Atlantic coast of the United States, for some years past. 13 

 I have been unable, however, to locate the original source of this 

 information, as well as the exact locality in the State where the fish 

 was obtained or observed. I have recently shown 14 that it also ranges 



13 Gambusia aflinis Jordan and Evermann, Bull. U. S. Nat. Mus., No. 47, I, 

 1896, p. 680. 



" Science, XXVI, November 8, 1907, p. 639. 



