170 THE AMERICAN CHARACIDAE. 
Number of 
Catalogue number specimens Size in mm. Locality Collector 
1464 C., 11917 I. 20 Rockstone Eigenmann 
Paratypes 
1465 C. Paratype 1 45 Gluck Island Eigenmann 
54 45-108 Gluck Island Gimbel Exped. 
Head 3.3-3.66; depth 3.66-4.66; D.11; A. 17 to 20; scales 5-30 to 34-3; 
eye large, slightly longer than wide, 2.75 in the head; interorbital almost flat, 
almost equal to the eye, 3 in the head. 
Subceylindrical, or only slightly compressed; depth of head at the base of 
occipital process 1.25 to 1.5 in the greatest depth. Preventral region rounded, 
without complete series of median scales. Predorsal region rounded, with a 
complete median series of 8 to 12 scales. 
Occipital process about 6 in the distance from its base to the dorsal, 
bordered by 2 or 3 scales. Interorbital nearly flat. Frontal fontanel small, 
triangular, narrower than the parietal; two thirds the parietal without the occi- 
pital groove. Second suborbital leaving considerable naked margins behind 
and below. Maxillary straight, 1.25 in the length of the eye. Mandible a 
little longer than the eye, 2.5 in the head. Premaxillary with three or four 
tricuspid teeth in the outer row, and six tricuspid teeth in the inner row. Max- 
illary with three to six tricuspid, or occasionally conical teeth. Dentary with 
a graduated series of four or five teeth also tricuspid. 
Gill-rakers 6 + 9. 
Caudal sealed over halfway to the end of the lobes. Anal sheath short, 
consisting of the edge of 3 large scales. Lateral line with pores developed on 
7 to 12 scales. 
Origin of the dorsal equidistant from the snout and caudal, penultimate 
ray one third the longest, which is 4 in the length. Origin of the anal on the 
vertical from the third scale behind the dorsal. Anal very deeply emarginate, 
the longest ray just reaching the base of the last ray. Ventrals on the vertical 
from the origin of the dorsal. Ventrals, just barely or not quite, reaching the 
anal, pectorals reaching the second scale in front of the ventrals. 
Humeral spot small, roundish or roughly triangular, often intense. A 
black line at the base of the anal. A narrow black lateral stripe. No true 
caudal spot, sometimes a dusky spot at the base of each caudal lobe. Each 
scale of the back often with a single intense dark spot. Scales of the sides 
often outlined with dusky. Scales of all except the upper three series with 
