Dec. 28,1916. Fishes or PANAMA— MEEK AND HILDEBRAND. 311 
36. Genus Eigenmannia Jordan & Evermann. 
Cryptops Eigenmann, Ann. N. Y. Ac. Sci., VII, 1894, 626 (type Sterno- 
pygus humboldtii Steindachner = Sternarchus virescens Valenciennes). 
(Name preoccupied.) 
Eigenmannia Jordan & Evermann, Bull. U.S. Nat. Mus., XLVII, 1896, 
341. (Substituted for Cryptops.) 
This genus is distinguished from Sternopygus by the absence of a 
free orbital margin. Body elongate, compressed; head rather small; 
snout blunt; mouth small; jaws equal, or the lower included; a large 
frontal and parietal fontanel present; eyes medium, covered by a 
transparent membrane; teeth in upper jaw in 2 almost confluent patches, 
those of lower jaw in 2 lateral patches; scales small, cycloid; lateral line 
complete; origin of anal back of vertical from origin of pectorals; caudal 
filament moderate or long. Size moderate, not exceeding 400 mm. 
52. Eigenmannia virescens (Valenciennes). 
Sternarchus virescens Valenciennes, in d’Orbigny, Voy. Amér. Mérid., 
V, Pt. 2, 1847, 11, Pl. 13, fig. 2. 
Sternarchus virescens Miller & Troschel, in Schomburgk, Reisen in 
Britisch-Guiana, Fische, III, 1848, 640 (Guiana); Ginther, Cat. 
Fish. Brit. Mus., VIII, 1870, 7 (Surinam). 
Sternopygus lineatus Miller & Troschel, in Schomburgk, Reisen in 
Britisch-Guiana, Fische, III, 1848, 640 (Guiana). 
Sternopygus tumifrons Miller & Troschel, Hore Ichthyol., III, 1849, 14. 
Sternopygus humboldtiit Steindachner, Denkschr. K. Ak. Wiss. Wien, 
XXXIX, 1878, 71, Pl. XIV (Rio Magdalena). 
Cryptops virescens Eigenmann, Ann. N. Y. Ac. Sci., VII, 1894, 626. 
Cryptops lineatus Eigenmann, Ann. N. Y. Ac. Sci., VII, 1894, 635. 
Cryptops humboldtit Eigenmann, Ann. N. Y. Ac. Sci., VII, 1894, 625. 
Eigenmannia humboldtit Jordan & Evermann, Bull. U. S. Nat. Mus., 
XLVII, 1896, 341. 
Head 6.05 to 7.15 in length to end of anal fin; depth 5.7 to 7; A. 
165. 
Body elongate, compressed; dorsal profile of head and body convex; 
head short; snout blunt, its length 2.85 to 3.3 in head; eye moderate, 
4-9 to 5.7; interorbital 3 to 3.2; mouth small; jaws subequal, the lower 
included, at least on sides; maxillary about equal to length of eye; teeth 
in the upper jaw in 2 nearly confluent patches, those in lower jaw in 
2 lateral patches; vent about one-half diameter of eye behind vertical 
from posterior margin of orbit; caudal filament in our small specimen 
flat, ribbon-shaped and more than half the length of anal, lost in the 
