Girardinus Iheringii.

D. 9. A. 9. V. 5. L. lat. 28-30. L. transv. 8.

Height of body about two sevenths of the total length (without caudal), length of head one fourth. Diameter of the eye exceeding the length of the snout, less than the width of the interorbital space. Origin of the dorsal above the middle of the anal in the female, a little nearer the end of the snout than the extremity of the caudal. Anal, in the male, in the anterior third of the total length, half as long as head and body without caudal fin. Twelve or thirteen scales on the median line between the interorbital space and the first on dorsal ray. Caudal fin as long as the head. Pale brown, the scales edged with darker, six to eight vertical black lines on each side of the tail.

Male 25 millim. long, female 42.

Numerous specimens, from Rio Grande do Sul.