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. Some 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 described from the latter as Hybognathus 
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 amarus, 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 
