134 REPORT OF NEW JERSEY STATE MUSEUM. 



along its anterior lobe i ji ; length of anal measured along its 

 anterior lobe i j4 ; least depth of caudal peduncle 5 ; length of 

 lower caudal lobe measured along its lower margin 1 54 ; pectoral 

 I Vt ; ventral 2 ; head i ^ 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 2j4 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 oi head rather evenly convex from tip of snout to 

 occiput, but lower less inclined. Snout ver}^ broad, convex, de- 

 pressed medianly, and as viewed above, rather narrowly con- 

 vergent, and its length about j/i 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 2J5 in interorbital 

 space. Pseudobranchias about % 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-/7 in interorbital space. Skin and bony surfaces where 

 exposed all finely rugose, especially most all of head. On opercle 

 rugose surface forms radiating stri?e. A dorsal series of bony 

 bucklers, all ruTOselv striate, with a median longitudinal keel 



