158 REPORT OF NEW JERSEY STATE MUSEUM. 
his catch alive more or less submerged in the water. The bait 
is the common earth-worm. At times they are attacked by 
lampreys, which bore into them, as in the case of the shad. 
The young, though most abundant in small clear brooks, may 
easily be distinguished by their beautiful variegated color pat- 
tern, and are quite attractive in the aquarium. ‘They also have 
the lateral line inconspicuous, or entirely absent when very 
young. ‘The adults are rosy-tinted during the spring or spawn- 
ing season, and the males sometimes with a faint rosy lateral 
band. The anal and lower caudal lobe of the male is also cov- 
ered with small tubercles, and the fins, together with the pectorals 
and ventrals, are also highly charged with more or less bright red 
pigment in both sexes. In the Great Egg Harbor River they do 
not appear to ascend above the dam at May’s Landing. My 
examples are from Crosswicks Creek, near Trenton, where it is 
abundant. 
Catostomus commersoni Jordan, An. N. Y. Acad. Sci., I, 1879, 
p. 114. 
> Catostomus commersonii Fvermann, Recreation, April, 1902, 
Dp. 202. 
Catostomus communis Le Sueur, Journ. Acad. Nat. Sci. Phila., 
I, 1817, p. 95.—Abbott, Nat. Rambles, 1885, p. 479. 
Catostomus bostoniensis Abbott, Geol. N. J., 1868, p. 825.— 
Abbott, Am. Nat., IV, 1870, p. 390. 
Catostomus teres Bean, Bull. U. S. F. Com., VII, 1887, p. 150. 
Catostomus nigricans (Le Sueur). 
Black Sucker. Mud Sucker. 
Head 324; depth 424; D. 11, 10, 1; A. 111, 6, 1; scales 47 im 
lateral line to ‘base of caudal, and 3 more on latter; 7 scales 
obliquely back from origin of dorsal to lateral line; 5 scales 
obliquely up from base of ventral to lateral line; snout 124 in 
head; eye 5; interorbital space 2'/,,; least depth of caudal 
peduncle 3. Body rather elongate, tapering from dorsal fin. 
Head thick, attenuated inferiorly to mouth. Eye small, high, 
posterior, and a little ellipsoid. ‘ Lips thick, upper especially so, 
