134 REPORT OF NEW JERSEY STATE MUSEUM. 
along its anterior lobe 144; length of anal measured along its 
anterior lobe 144; least depth of caudal peduncle 5; length of 
lower caudal lobe measured along its lower margin 1% ; pectoral 
1*/,; ventral 2; head 114 in upper caudal lobe. Body long, slen- 
der, rather cylindrical anteriorly, and becoming compressed pos- 
teriorly, greatest depth about midway in length of entire pre- 
dorsal region, and profiles similar. Caudal peduncle small, a 
little compressed laterally, and its least depth 214 in its length 
measured posteriorly to last lateral scute. Head large, broad, 
depressed especially anteriorly, posteriorly above broadly convex, 
sides rather steep, and entire under surface depressed or flattened. 
Upper profiles of head rather evenly convex from tip of snout to 
occiput, but lower less inclined. Snout very broad, convex, de- 
pressed medianly, and as viewed above, rather narrowly con- 
vergent, and its length about 4 its width. Eye small, a little 
ellipsoid, high, and placed about first */, in length of head. 
Mouth large, broadly transverse below, and its front margin 
falling about opposite middle of eye. Lips rather thick and 
little free. Edges of jaws rather obtuse. Tongue large, thick, 
fleshy, and apparently not free. On under surface of snout mid- 
way in its length as measured to front of mouth, 4 slender 
barbels, subequal or about equal to half of width of mouth. 
Nostrils large, close together before eye, anterior smaller, a 
little superior and near last ?/, in length of snout, and posterior 
a*crescent just below margin of eye well anterior. Interorbital 
space elevated convexly, and depressed medianly where it 
is level, this level surface also extending nearly to tip of snout. 
Opercle large. Gill-openings large, only continued forward for 
about last eighth of length of head. Gill-rakers 17 short com- 
pressed cuneate firm points, largest about 3 in horizontal diame- 
ter of eye. Gill-filaments long, longest about 21% in interorbital 
space. Pseudobranchie about 34 of eye-diameter horizontally, 
and extending as a narrow submarginal arc all around under 
surface of gill-opening. Isthmus broad, depressed, and its least 
width 2?/, in interorbital space. Skin and bony surfaces where 
exposed all finely rugose, especially most all of head. On opercle 
rugose surface forms radiating strie. A dorsal series of bony 
bucklers, all rugosely striate, with a median longitudinal keel 
