Edentulous Oenera of Curimatince. 431 



Head 3i-3f ; depth 2i-2f . D. 12-13; A. 13-14. Scales 14-51 to 53- 

 6 or 7. 



Three of the specimens from Fonteboa differ considerably from the 

 rest. They have the back much less elevated. Eye H-lf in interorbital. 

 Highest dorsal ray equal to the length of the head. Ventrals not reach- 

 ing to vent, pectorals scarcely to ventrals. Anterior and upper margin 

 of the dorsal black; a blackish band on the middle of the back from dor- 

 sal to caudal. 



Depth 2|-2^. 



35. CURIMATCS SCHOMBURGKII. 



Curimatus schomhurgMi Gthr., '64, 291 (British Guiana ; Demerara). 



Habitat, Guianas. 



One specimen, .19 m. to base of caudal. Surinam ; Prof. Wyman. 



Preventral region flat, with strong lateral keels ; postventral region 

 trenchant, with a median series of equitant scales ; dorsal rounded. 



Profile depressed above the eye. Premaxillary broad, the mouth in- 

 ferior. Eye a little longer than the snout, 3^ in head, If in interorbital. 



Scales crenate, those of the back little smaller than those on the sides 

 below the lateral line ; caudal naked. 



Origin of dorsal little nearer to tip of snout than to base of caudal. 

 Base of anal about equal to snout and eye to posterior margin of pupil. 

 Tip of highest anal ray extending little beyond base of last ray. Ven- 

 trals not reaching to vent, pectorals not to ventrals. 



Yellowish golden, darker above. 



Head 3f ; depth 2^. D. 12; A. 12. Scales 14-55 to 59-8. 



36. CURIMATUS ESSECIUIBENSIS. 



Anodus cyprinoides M. and T., '49a, 7 (non auct.). 

 Curimatus essequibensis Gthr., '64, 291 (Essequibo). 



37. CURIMATUS PL ANIROSTRIS. 



Oharax, No. S78; Gronow, Zoophyl., I., 123, 1781. 



Char ax planirostris Gronow, "'54a, 154." 



Curimatus planirostris Gthr., '64, 293 (copied). 



Curimatus abramoides Kner, '59a, 142, pi. 2, fig. 3(Barra do Rio Negro). 



Habitat, Amazon and Rio Negro. 



Four specimens, .11-.18 m. Rio Negro ; Obidos. 



Compressed, elevated. Preventral region rounded ; postventral region 

 trenchant, without carination. Median line before dorsal naked ; post- 

 dorsal region trenchant. Scales small, more or less deciduous, thin and 

 strictly cycloid. 



Anterior profile concave. Eye somewhat greater than snout, about 

 3 in head, li-li in interorbital, A strong anterior and posterior lid in 

 adult. 



