EIGENMANN: the CHEIRODONXINiE. 



91 



dd. Dorsal with 12 or 13 rays; depth 2i to 3; A. 23-24; scales 34 to 37; mouth minute; 



maxillary half the length of the eye 54. madeirae Fowler. 



hh. No distinct caudal spot; caudal peduncle narrowly margined with dark; depth 3.6; A. 21; scales 34 or 

 35; premaxillary with 10 to 14 teeth, maxillary with 4 to 7 55. melandeta Eigenmann. 



48. Odontostilbe hastata Eigenmann. (Plate XVI, fig. 1.) 

 Odontostilbe hastatus Eigenmann, Indiana University Studies, No. 18, 1913, p. 27. 

 Range: Magdalena and Atrato basins. 

 5703, C. M., type, cf, 40 mm.; paratypes, twenty-five, largest 37 mm. 



5104 a-j, C. M. 12861a-j, I. U. M., Soplaviento. Eigenmann. 

 5365a, C. M., Certegui. Rio Quito, into Atrato. Wilson. 

 5387a-f, C. M., 13079, I. U. M., many, Rio Atrato at Quibdo. Wilson. 

 5366a-x, C. M., 13045, I. U. M., many, Rio Truando, into Atrato. Wilson. 

 Head 4+; depth 2.8-3.25; D. 11; A. most frequently 19 (18-21); scales 



Fig. 33. Odontostilbe hastata Eigenmann. Caudal scales of &. 



5.5-32 to 35-3; eye 3 in the head, equal to interorbital. Most nearly like Odon- 

 tostilbe paraguayensis, but much slenderer. 



Compressed; dorsal and ventral profiles equally arched; preventral area 

 rounded, with about eleven scales; postventral and predorsal areas narrowly 

 rounded, the latter with a regular median series of about ten scales; occipital 

 process short and broad, its length one-sixth of the length from its base to the dorsal, 

 bounded by three scales on each side; frontal fontanel variable, an equilateral 

 triangle as wide as, and half as long as, the parietal fontanel, or quite minute; 

 skull convex; snout. blunt, the mouth comparatively large; maxillary-premaxillary 

 nearly as long as the eye; five teeth in the premaxillary, two or three in the maxil- 



