EiGENMANN: On Apareiodon. 75 



A dark band from tip of snout along lateral line to tip of middle 

 caudal rays, a silvery band below it; back with faint dark cross- 

 shades, narrower and usually more numerous than in piracicabce, one 

 below tip of adipose, one in front of the adipose, two or three between 

 adipose and dorsal, one or two below dorsal, one just in front of dorsal, 

 one or two between dorsal and nape, and one at nape. Sometimes only 

 one between dorsal and the one just in front of adipose, and but one 

 between that under the dorsal and that at the nape. Some of the 

 smaller specimens with only three cross-shades; at the adipose, under 

 the dorsal, and at the nape. Sometimes the cross-shades in front 

 of the dorsal are broken. 



Parodon affinis was described by Steindachner as having two teeth 

 on the side of each mandible. I have examined the types in the Vienna 

 Museum, and was not able to detect any teeth. I had, however, 

 described a new species, Parodon paraguayensis, largely because it 

 differed from affinis in having no teeth on the sides of the lower jaw. 

 The two species seem therefore to be synonymous. None of the many 

 specimens examined have teeth in the mandibles. The figure (PI. XI, 

 fig. i) is from the type of P. paraguayensis. 



4. Apareiodon hasemani, sp. nov. (Plate XII.) 

 6587 a, C. M. Type, 75 mm. Pirapora, Dec. 15, 1907. Haseman, 



6585 a-l, C. M. Paratypes, 61-75 mm.; same place and date. Hase- 

 man. 



6584 a-J, C. M. Paratypes, 35-63 mm. Cidade do Barra, Dec. 6, 



1907. Haseman. 

 6583 a-/, C. M. Paratypes, 44-68 mm. Januaria, Dec. 12, 1907. 



Haseman. 



6586 a, C. M. Paratype, 53 mm. Lagoa Pereira, Dec. 23, 1907. 

 Haseman. 



6582 a-j, C. M. Paratypes, 72-85 mm. Penedo, March 20, 1908. 



Haseman. 



Head 4.5-5; depth 4.5; dorsal 11 or 12. Anal 7 or 8; interorbital 



equal to snout, 3 in head in the smaller specimens; 2.66 in 6582 a, 



in which the interorbital is a trifle greater than the snout. Lateral 



36 37 38 40 41 ^ , , , 10, II 12 , , , , , 



line ^, ^^, ^^, ^^, ^^. Predorsal scales -- — , — ; depth of caudal 

 4-9931 22 21 3 



peduncle half, or more than half the greatest depth. 



In general shape like the other species of the genus; dorsal and ventral 

 profiles equally curved from the snout; mouth inferior, below the middle 



2 Number of individuals having the given character. 



