DEC. 28,1916. FISHES OF PANAMA MEEK AND HILDEBRAND. 257 



mostly small, those between the ventral fins enlarged, a single large 

 plate in advance of vent, bordered anteriorly by 3 enlarged scutes; 5 

 to 7 rows of small plates across the belly; 16 or 17 scutes from anal to 

 base of caudal; origin of dorsal over or slightly behind base of ventrals; 

 dorsal spine usually about equal to width of head; margin of caudal fin 

 concave, the upper rays the longest; the upper spine enlarged, bearing 

 a filament which is usually lost in preserved specimens; anal fin small, 

 its origin a little in advance of the tips of the deflexed dorsal rays; ventral 

 fins reaching nearly or quite to origin of anal; pectoral fins of about the 

 same length as the ventrals, not quite reaching the base of the latter, 

 1.3 to 1.77 in head, with short bristles in adult male. 



Color brownish above, pale below; the back with 5 or 6 dark cross- 

 bars, the first one at nape very indistinct or wanting, the second under 

 base of dorsal. Fins yellowish green, with dark spots on the rays. 



There are numerous specimens in the present collection, ranging from 

 50 to 185 mm. in length. Although this species has been recorded from 

 both slopes of Panama, our extensive collecting produced none from the 

 Pacific side. We are therefore inclined to doubt the validity of the 

 Pacific slope records. Our specimens are all from the Rio Chagres and 

 its tributaries. 



A common species, inhabiting shallow water with swift current, on 

 either sandy or pebbly bottom. 



In the National Museum we have examined presumably the type 

 of L. bransfordi Gill, which evidently is an adult male of this species. 

 The adult male has a broad head and many short bristles on margin of 

 snout and pectoral fins. 



Habitat: Panama. 



13. Loricaria filamentosa latiura Eigenmann & Vance. 



Loricaria filamentosa latiura Eigenmann & Vance, in Eigenmann, Indiana 

 Univ. Studies, No. 16, 1912, 13 (Boca de Certegai, Colombia). 



Loricaria tuyrensis Meek & Hildebrand, Field Mus. Nat. Hist. Pub., 

 Zool. Ser., X, 1913, 81 (Rio Capeti, Panama). 

 Head 4.1 to 4.6; depth 8.7 to 11.5; D. I, 7; A. I, 5; lateral scutes 30 or 



3i- 



Body broad, strongly depressed throughout; caudal peduncle broad, 

 its width at last anal ray 3.6 to 4 in its length; head low and broad, its 

 width at gill-opening equal to or slightly less than head from that point 

 to tip of snout; snout rather acute, granular to its margin, its length 

 1.75 to 1.83 in head; orbital notch distinct; eye 7.2 to 9 in head; mouth 

 small; teeth bifid; each jaw with from 8 to 10 teeth on each side; lips 

 papillose, fringed, barbel longer than eye, but failing quite notably 



