28 
Indiana University Studies 
Curimatus elegans nitens Holmberg. 
17137, 35, 65-95 mm., Huachi. Aug., 1921. 
17138, 1, 75 mm., Rurrenabaque. Oct., 1921. 
Curimatus biuotatus Pearson, sp. nov. Plate IX, fig. 1. 
17285, 1, 155 mm., Rurrenabaque. Oct., 1921. 
Head 4%; depth 3|||; D.13; A. 10; scales 11-74-8; eye 3.33 
in head; compressed; dorsal profile high; depressed over the 
eyes; prevented area flat; abdomen rounded; predorsal area 
scaled, narrowly rounded ; mouth inferior, on a level with the 
lower level of the eye; suborbital long and narrow; origin of 
dorsal about equidistant from the tip of the snout and adi- 
pose; dorsal obliquely truncate; the caudal deeply forked, the 
lobes considerably longer than the head ; pectorals not near 
reaching ventrals; ventrals not quite reaching the anal; anal 
emarginate, the tip of the third ray almost reaching the 
lower caudal fulcra when depressed; all scales deeply and 
regularly crenate, regularly increasing in size from the back 
ventrad except posterior to the origin of the anal ; fins naked ; 
lateral line nearly straight. 
Iridescent, light brown above, a rather indistinct lateral 
band; a dark spot in front of the dorsal, another behind the 
tip of the occipital ; fins unmarked ; the lower caudal lobe 
darker than the other lobes of the fins. 
Subfamily parodontin^e. 
Parodon hilarii Reinhardt. 
17147, 50, 66-110 mm., Tumupasa. Dec., 1921. 
17148, 28, 50-120 mm., Rio Colorado, Lower Bopi. Sept., 1921. 
17149, 12, 40-53 mm., Rio Iniqui, Upper Beni. Sept., 1921. 
17150, 3, 44-52 mm., Rurrenabaque. Oct., 1921. 
17151, 2, 60 and 88 mm., Popoi River, Upper Beni. Sept., 1921. 
The specimens from Tumupasa have the head 4.3 to 5 ; 
depth 3 1/3 to 4 2/5; a single specimen has the dorsal 13; 
lateral line 37 to 38. Those from the Rio Colorado, head 4.2 
to 4.7 ; depth 4 to 4.8 ; lateral line 35 to 38 ; those from the Rio 
Iniqui, head 4.1 to 4.6; depth 4.1 to 4.5; lateral line 36 to 38. 
