2 



INDIANA UNIVERSITY STUDIES 



Landonia latidens Eigenmann and Henn, sp. no v. 



Type, 56 mm., paratypes, 5409 a-b C. M., 13100 I. U. M., 14 specimens, 



largest 59 mm. Vinces, Ecuador. Arthur Henn. 

 5493 a-d C. M. 13101 I. U. M. 22, 28-52 mm. Colimes, Rio Daule, Ecuador. 



Artliur Henn. 



Head 4 ; deptli 3.3-4 ; D. 11 ; A. 31-32 ; scales 8 or 9-45 to 50-5 or 6 ; 

 eye 2.5 in head, greater than interorbital. 



Compressed, clupeoid, ventral regions rounded, predorsal area rounded 

 with a median naked line; parietal fontanel longer and considerably wider 

 than the frontal, skull smooth ; lower jaw very oblique, its tip entering the 

 profile ; mouth smiall, maxillary shorter than eye ; dermal border of opercle 

 wide; teeth as in generic description. 



Dorsal pointed, its origin in middle of length, reaching about half way 

 to caudal, about equal to length of head; adipose well developed; caudal 

 equilobed, the lobes about equal to length of head; anal falcate, its origin 

 under end of dorsal ; its lobe about equal to length of head less opercle ; 

 ventrals small, considerably in advance of the vertical from the origin of 

 the dorsal, not reaching anal; pectorals narrow, reaching to or beyond 

 origin of ventrals. 



Scales regularly arranged ; few or no radials ; caudal naked ; a few 

 scales along the bases of the anterior anal rays ; lateral line sagging in 

 front of the dorsal. Male with a glandular pouch and thickenings on the 

 caudal rays just below the middle ones and one to three hooks on each of 

 the anterior anal rays. 



A conspicuous black spot on the basal two-fifths of the middle caudal 

 rays, upper caudal lobe margined with dark ; tip of dorsal dusky ; no 

 humeral i-pot, a narrow silvery band. 



PHENAGONIATES Eigenmann and Wilson, gen. nov. 



Mouth minute, teeth in a single series in each jaw, tricuspid except 

 in posterior part of maxillary where they are conical, gill-opening wide, 

 much compressed ; chest not trenchant ; pectorals large, reaching to middle 

 of ventrals ; anal very long, its origin far in advance of the dorsal ; dorsal 

 a little behind middle of body. No adipose fin, lateral line incomplete. 



Phenagoniates wilsoni Eigenmann, sp. nov. 



5354 G. M. Type, 41 mm. Paratypes, 13030 I. U. M. 7, 21-38 mm. Manigru. 



Charles Wilson, 

 5355a C. M. Paratypes, 30 mm. Certegui. Charles Wilson. 

 5356a C. M., 13031 I. U. M. Paratypes, 30 & 37 mm. Truando. Charles 



Wilson. 



/Head 4.6; depth 8.83; D. 9; A 53-55. Scales 7-7+34-7 (9+35 in one), 

 Eye '2.2 in the liead. 



JNIuch compres^sed, dorsal profile highest at origin Of dorsal, ventral 



jn-ofile deepest at origin of anal ; preventral area rounded, without distinct 



median series of scales ; occipital proefsg about as broad as long ; occipital 



fontanel nmch wider and twice as • ^ , i i 1 



" ..ng as the parietal, cheeks narrow and 



