a ea ee eee ae ee 
Dec. 28, 1916. FisHes or PANAMA— MEEK AND HILDEBRAND. 265 
was again visited and thoroughly fished, but no more specimens were 
secured. 
This fish differs from H. magdalene Eigenmann in the more an- 
terior position of the dorsal, the less deeply concave margin of the 
caudal fin, the fewer azygous plates in front of adipose spine, the 
shorter coracoids, and in coloration. 
Callichthys (Hoplosternum) thoracatus Steindachner (non C. & V.) 
from the Cauca appears to be very closely related to this species, if not 
identical with it. 
The present species is the most northern representative of the genus. 
Family IV. Cyclopide. 
Naked fishes with robust or elongate bodies; dorsal fin on anterior 
portion of body; usually an adipose fin with or without a spine, or repre- 
sented by a movable spine attached by a membrane to the caudal 
peduncle; teeth in jaws in more than one series. 
These fishes inhabit mountain streams of the Andes of Peru to Vene- 
zuela and Panama. 
14. Genus Cyclopium Swainson. 
Cyclopium Swainson, Nat. Hist. Fishes, II, 1839, 305 (type Pimelodus 
cyclopium Humboldt). 
Body elongate, naked, compressed anteriorly; teeth small; eye small, 
superior; adipose fin a movable spine attached to caudal peduncle by 
a membrane, or a long fin with or without a small embedded spine; ribs 
moderately developed; caudal fin truncate or slightly emarginate, the 
outer rays slightly produced. 
Small, naked fishes inhabiting mountain streams of the Andes of 
Ecuador, Peru, Colombia, Venezuela, and eastern Panama. 
20. Cyclopium pirrense Meek & Hildebrand. 
Cyclopium pirrense Meek & Hildebrand, Field Mus. Nat. Hist. Pub., 
Zoél. Ser., X, 1913, 83 (Rio Cana, Cana, Panama). 
Head 3.3 to 3.6; depth 5 to 6; D. I, 5; A. I, s. 
Body robust, compressed posteriorly; head depressed, broad, its 
width equalling its length; anterior teeth of upper jaw pointed, those of 
the lower bicuspid; snout 1.8 to 2 in head; interorbital 3.4 to 4.1; origin 
of dorsal over ventrals, its distance from tip of snout 2.2 to 2.4 in body; 
maxillary barbel reaching slightly past eye; nostrils with a triangular 
