150 Annals of the Carnegie Museum. 



Predorsal region rounded, with, or without, a complete series of eleven 

 median scales. Occipital process short, about 6 in the distance from 

 its base to the dorsal, bordered by two or three scales. Frontal 

 fontanel an almost equilateral triangle, narrower than the parietal 

 fontanel, and 1.6 in the parietal without the occipital groove. Sec- 

 ond suborbital leaving a naked margin behind and below. Snout 

 short and moderately blunt, less than the eye, 4 in the head. Max- 

 illary shorter than the eye, equal to the length of the snout, ellip- 

 tical in outline, the front and back not parallel. Mandible equal 

 to the eye. Premaxillary with four or five five- to seven-pointed 

 teeth in the inner row, and three three-pointed teeth in the outer 

 row. Maxillary without teeth. Dentary with a graduated series 

 of four or five five- or six-pointed teeth, followed by four or five 

 minute teeth on the sides. Gill-rakers 6 + 8. Anal sheath very short. 

 Lateral line with pores developed on seven or eight scales. Origin 

 of the dorsal half the length of the eye nearer to the caudal than to 

 the snout. Longest dorsal ray 4.7 in the length. Origin of the 

 anal on the vertical from the third or fourth scale behind the dorsal; 

 anal truncate, the longest ray equal to the length of the base. Caudal 

 shorter than the head, 4 in the length. Ventrals on the vertical 

 from the first dorsal ray, very small, reaching the third or fourth 

 scale in front of the anal. Pectorals normal, but small, reaching 

 the third to fifth scale in front of the ventrals. No humeral spot. 

 Lateral stripe narrow, lead-gray, extending from the humeral region 

 to the triangular caudal spot. Caudal spot narrowed abruptly 

 behind and continued to the tips of the middle caudal rays. Dorsal, 

 anal, ventrals, and pectorals unmarked, but somewhat dusky. 

 Scales silvery below the lateral line. 



3. Hasemania bilineata sp. now 

 Plate I, fig. 3. 



Type, one specimen, 41 mm. C. M. No 3004. Alto da Serra, Sao Paulo, in a 

 creek. 



Colypes, four specimens, 38 to 20 mm. C. M. No. 2938. Mogy das Cruzes. 

 Cotypes. four specimens, 16 to 14 mm. C. M. No. 2939. Mogy das Cruzes. 



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 



