366 REPORT OF NEW JERSEY STATE MUSEUM. 



Notropis whipplii analostanus (Girard). 

 Silver Fin. 



This was the most abundant cyprinoid in the Delaware along the 

 shores of Xewbold's Island, Burlington county, on August 13th, 1908. 

 Many young were found in some places, as along the clear, sandy 

 banks, in veritable hosts. The beautiful adults, some of which were 

 males, were interesting, as they had entirely lost the breeding-tubercles 

 and satin-white fin-pigment. Their scales, however, exhibited the 

 beautiful reticulated diamonds in the usual pattern, and the posterior 

 dorsal membranes were marked distinctly with the characteristic black 

 dorsal blotch. 



Abundant in the lower tidal of the Assiscunk Creek, near Burling- 

 ton, on September 15th, 1908. They frequented the shallows, but all 

 seen were young or small in size. They preferred the muddy shoals 

 with the retreating tide, and were seldom found associated with the 

 other small fishes. When disturbed in these places they had a curious 

 habit of skipping or jumping out of the water in their efforts to get 

 away quickly. They would frequently jump several inches in the air 

 and skip a distance of from a few inches to a foot, in this greatly sug- 

 gesting mullets (Mugil) as they jump a cork-line of a seine. They 

 would all then be enabled to reach deep water and so escape. We did 

 not notice the killies do this. 



Found by me in the Delaware at Burlington Island. 



Notropis chalybaeus (Cope). 

 Blue Green Minnow. 



Very abundant in Still Run, near Porchtown, upper basin of the 

 Maurice River, in Gloucester county, April 17th, 1908. They were 

 without breeding-dress, lacking tubercles or orange pigment. Both 

 this and Abrcunis crysoleucas, with which they were associated, were 

 preyed on by the pike which were constantly darting into the schools, 

 seizing a victim and as quickly returning to their original point of 

 vantage. None of the minnows were of the dark cedar-stained type 

 found in other lowland streams. Small or young examples were 

 numerous. 



