ANNOTATED LIST OF THE SPECIES 357 
showing it to be quite distinct from that species. Valenciennes was informed by 
Pentland that it was a favorite local food species, known as the pejerrey, noting 
that the name is applied in Spanish countries to the best fish of the region, and that 
Basilichthys also carries that complimentary epithet at Lima. I was not given 
that name, nor informed that it was considered a good food fish at Moho. It 
suggests In its general form some relationship to O. cuvieri, and thought to be 
possibly the young of that species. 
Valenciennes described his O. humboldti in rather fuller terms than either the 
better-known agassizii or pentlandi. The specimens indicated above more nearly 
approach humboldti than any others previously reported, but do not conform per- 
fectly to description. 
Incae-like in the square tail, scaled venter, size of the eye, paucity of teeth. 
Unlike humboldti types apparently by being too short, head too short, dorsal profile 
too elevated. Similar to humboldti in the complete lack of specialized scales, the 
scales reaching to and including the venter, as represented in his figure (which may 
not be reliable), elongation of the caudal peduncle. The figure given by Valen- 
clennes comes very close to my specimens, except for the deeply concave caudal fin, 
but the text describes it as truncate, which fits my specimens. His specimens 
were half an inch longer than my largest, and said to reach a maximum of no 
more than five inches. My largest were sexually mature at 82 mm. or more. 
Elongate, compressed, evenly and moderately convex from occiput to end of 
dorsal fin and from chin to origin of anal; caudal peduncle long, equal to head, 
straight; dorsal and anal bases oblique; depth moderate, 3.6. Crown convex, 
snout short, less than eye; eye large, elevated, slightly elongated out of round, 
nearly equal to interorbital space, equal to snout, nearly 4.0 in the head; mouth 
oblique, rather narrow; teeth few, rather large, first series complete, few in second. 
Seales smooth, flat, thin, concentrically striate, the striae rather roughened, 
none either cornified or granulate, regular, extending well forward on snout, and 
on the cheek beyond the orbit; about 24 small scales on the vertebral series; sides 
and belly fully scaled. 
Dra -l35 Ay 12-13 oP. 14-16. 
Dorsal origin forward of middle of body, fin small, its base equal to depth of 
caudal peduncle, contained 2.5 times in the latter, the tip of fin reaching only one- 
third the length of peduncle; anal fin reaching a little farther; caudal fin long, 
narrow, truncate; pectoral rounded, reaching more than half way to the anal origin. 
These fin and body proportions resemble those of immature specimens and would 
easily be understood as such, except for finding some with well-developed gonads. 
These specimens from the fjérd at Moho resemble other species collected there 
in the waters from the red sandstone of the region in being pale red-brown on a 
ground-color of silver and yellow. The scales rather uniformly and finely punctu- 
late with chromatophores. Few fine markings on fins, not always present; the 
anal usually hyaline. 
Locally named: hispe, hualpuche, silve. 
