Jordan and Evermann. Fishes of North America. 2781 



194. GALEICHTHYS LOXGICEPHALTJS (Eigenmaun & Eigenmann). 



Head3?; depth 6^. D. I, 7; A. 20. Elongate, slender, greatest- width 

 little greater than the depth. Head long and depressed, its greatest 

 width 1^ in its length, it8 greatest depth little more than its length. 

 Top of head with faint grannies almost entirely concealed hy the skin ; 

 interorbital area flat and with 4 ridges which are obscurely granular, the 

 inner two bordering the iontanel, the outer ones curved in front extend- 

 ing obliquely backward from near the posterior nasal opening; occipital 

 process as long as broad, its margins concave; fontanel produced as a 

 deep groove to the base of the occipital process; opercle faintly striate; 

 humeral process entirely covered with thick skin, not granular. Eye 

 lateral, well above the angle of the mouth, its diameter \\ in snout, 6 in 

 head, 3 in interocular; snout depressed and rounded in front. Maxillary 

 barbels extending scarcely beyond base of pectoral, mentals not to gill 

 opening. Upper jaw little projecting ; width of the month 2| in the head; 

 intermaxillary teeth long and slender, the depth of the band 4^ in its width ; 

 vomerino and palatine teeth obtusely conical, the vomerine patches sep- 

 arate, contiguous to, but not confluent with, the palatine patches. Gill 

 membranes not forming an angle where they meet, with a rather broad, 

 free margin. Gill rakers short and thick, 4 -f- 5. Pectoral pore small; 

 vertical series of pores present; distance of dorsal fin from tip of snout 

 2f in the length, the spine If in the head, its outer margin granular- toothed 

 near its base, its inner margin with short teeth ; distance of adipose fin from 

 the dorsal 3g in the length; adipose fin much longer than high, as long as 

 the dorsal fin ; caudal forked, the upper lobe \ longer than the lower, very 

 nearly as long as head, 3jf in the length; anal fin emarginate, scarcely 

 longer than high, its height 2^ in the head; ventrals reaching almost to 

 the anal, about 2 in head; pectoral spine a little longer than the dorsal 

 spine If in the head; its outer edge roughened, inner edge with rather 

 sharp teeth. Brown above, the sides silvery, entire ventral surface 

 sprinkled with brown clots; a black median line on the back; fins dusky; 

 barbels blackish. One specimen, a male, .29 m. long (No. 4972, M. C. Z.). 

 Panama. Steiudachner. (Eigeuuiann &, Eigenmann, Nematognathi, 82.) 



195. GALEICHTHYS RUGISPINIS (Cuvier & Valenciennes) 



Head 3 to 4; depth 5 to 6. D. I, 7; A. 19 to 21. Slender, compressed 

 on the tail. Head broad and depressed, tapering forward; width of the 

 head 1| to If in its length, at the angle of the mouth 2f to 2; depth of 

 head If to 2; profile rather steep. Top of head, humeral process, front 

 and sides of spines, and dorsal plate granular, the granulation not extend- 

 ing forward to above middle of cheeks. Occipital process triangular, 

 about as long as broad, the median ridge not very prominent. Middle of 

 fontauel behind the eye, the posterior portion separated by a bridge, 

 not continued backward as a groove; interorbital region with 4 ridges. 

 Eye small, 3 in snout, 10 in head, 3^ in the interocular. Barbels villiform, 

 Maxillary barbel reaching to or beyond base of pectoral ; postmental to 

 gill opening, mental barbels much shorter. Mouth inferior, lower jaw 



