128 REPORT OF NEW JERSEY STATE MUSEUM. 



During May of 1904 the above example, together with many- 

 others were taken in woodland affluents of Crosswicks Creek 

 near Trenton by Dr. Abbott and myself. In life they were pale 

 olive-brown above, with somewhat metallic bluish-green along 

 side of back. A brassy-golden tinge from head to base of 

 caudal more or less sprinkled with minute dusky dots, and some 

 showing through bluish-green. Ventral region white, translu- 

 cent, and with a tinge of straw-color showing through. Side of 

 head brassy-silvery. A median dusky streak on back. Margins 

 of scales not particularly darker though edged with dusky. Dor- 

 sal and caudal pale olive-brown, translucent, or paler along mar- 

 gin of latter, especially below. Pectoral same, a little dusky 

 above. Ventral and anal more translucent or dilute amber- 

 color. Iris glassy-silvery, dusky above. vSome variation was 

 noticeable. The large ones were altogether more opaque-white 

 below, the sides more distinctly bluish above in some lights, and 

 the reflections of more golden-bronze confined to certain places, as 

 the head. Others had streaks on side of caudal peduncle or 

 tail above anal, with a distinct band of golden showing through 

 distinctly like the band on an anchovy. The young do not 

 differ from the adults in color. They resemble the young of 

 other common minnows but may be identified among any other 

 Delaware species, except the Pimephales, by means of the black 

 peritoneum. 



A fairly abundant and beautiful minnow in the Delaware and 

 Raritan basins. It was de'scribed from the latter as Hyhognathiis 

 osmerinus by Cope, which, however, is not different from Hy- 

 bognathus regius of Girard. It differs from the true Hybog- 

 nathus nuchalis of the Mississippi Valley in its larger size. The 

 type of H. osmerinus I have not seen, however, and base the above 

 comparison upon Delaware and Potomac specimens which reach 

 7 inches. It is less common in the Delaware than Notropis 

 hudsonius amanis, with which it is found associated and for 

 which it may easily be mistaken. Few anglers are able to dis- 

 tinguish the two species, and frequently they are called ''gud- 

 geon" alike. I have mostly met with this fish during the summer 

 months in the open river. It is then more or less troublesome 



