224 THE AMERICAN CHARACIDAE. 



Specimens examined. 



Catalogue Number of Size 



' number specimens in mm. Locality Collector 



3001 C. Type 1 41 Alto da Serra, Sao Paulo Haseman 



2938 C. Paratypes 4 20-38 Mogy das Crazes Haseman 



2939 C. Paratypes 4 14-16 



Head 3.5; depth 2.8 to 3; D. 11; A. 14 to 17; scales 5-33 or 34-4; eye 

 2.5 to 3 in the head; interorbital equal to the eye. 



Compressed. Depth of head at the base of the occipital process 1.33 in the 

 greatest depth. Preventral region rounded, without complete series of median 

 scales. Predorsal region rounded, with a regular series of about 11 scales. 



Occipital process short, 6 or more in the distance from its base to the dorsal. 

 Interorbital almost flat. Frontal fontanel truncate, not so wide as the parietal, 

 three fourths as long as the parietal without the occipital groove. Second 

 suborbital with narrow naked margin behind and below. Maxillary less than 

 the eye, 3.6 in the head. Mandible equal to the eye. Premaxillary with 

 four 7-pointed teeth in the inner row and one conical or tricuspid tooth repre- 

 senting the outer series. Maxillary without teeth. Dentary with three broad, 

 chisel-shaped teeth with 8 or 9 points. 



Gill-rakers 8 -Ml. 



Anal sheath very short or lacking. Lateral line with pores on the first 3 

 to 6 scales. 



Scales cycloid. Probably no interpolated scales or rows of scales. 



Origin of the dorsal equidistant from the snout and caudal, the longest 

 ray 3.8 in the length. Origin of the anal on the vertical from the last dorsal 

 ray. Anal rounded, the longest ray equal to the base. Ventrals on the verti- 

 cal from the third or fourth scale in front of the dorsal. Ventrals reaching 

 to the third or fourth scale in front of the anal. Pectorals, (of fishes over 16 mm.) 

 normal in form and reaching the fourth or fifth scale in front of the ventrals; 

 pectorals of specimens of less than 16 nun., archaic. Adipose lacking. 



No true hmneral or caudal spots. A heavy black lateral stripe from the 

 caudal peduncle to the head, much fainter over the region of the body-cavity. 

 An almost straight black Une from the caudal along the under side of the caudal 

 peduncle to a point just above the origin of the anal. Last four scales of the 

 back black. Fins all unmarked. Scales above the lateral stripe heavily out- 

 lined with dusky. 



