98 CALIFORNIA ACADEMY OF SCIENCES. 



67.2. Bagrus 2)unctidatiis Castelnau, 1. c. 33, pi. xiv, 

 fig. 2. 



Deeper than wide. Head with striations. Adipose 

 8 J in the total length; pectoral spine much longer than 

 the dorsal spine and serrated. Eye nearer snout than 

 to opercle. Maxillary barbels longer than the head. 

 Anterior portion of the back with yellow spots. Caudal 

 emarginate. Depth 4 in the total; width 65 ; D. I, 6; 

 A. 11. 



ANALYSIS OF THE AMERICAN GENERA OF PIMELODIN^. 



a. Teeth on vomer noue: adipose fin long or moderate; top of head cov- 

 ered with skin, not granulated. 



b. Snont jioiuted, produced considerablj' bej'ond the lower jaw; denti- 

 tion of both jaws weak, consisting of narrow bauds of loosely-set 

 teeth. Adipose fin long; first ray of the dorsal and pectoral fius 

 articulated, not pungent, as long as, or longer than the following rays; 

 dorsal and anal fins emarginate. Pimelodina xi. 



bb. Snout rather broad, scarcely produced beyond the lower jay; teeth 

 well developed. 



c. Barbels broad and long, aud having a broad membranaceous border 

 on the posterior margins; first ray of the dorsal and pectoral fins 

 articulated, not pungent, as long as, or longer than any of the fol- 

 lowing rays; dorsal and anal fius emarginate. Head entirely cov- 

 ered with skin. Pinirampus xii. 

 cc. Barbels terete or flattened, little, if at all, margined. 



d. Snoiit broad and produced, spatulate. First ray of the dorsal 

 and pectoral fins articulated, not pungent; Occipital process a 

 narrow ridge. Head entirely covered with skin; ujjper portion 

 of the cheek, nasal and occipital surfaces reticulated. Dorsal and 

 anal fins emarginate. Luciopimelodus xiii. 



dd. Snout not produced. 



e. Top of head entirely covered with skin. 

 /. Head as broad as long, or very little narrower; orbit without 

 a free margin; occipital process reaching, or almost reaching 

 the dorsal plate; adipose fin short. Pseitdopimelodus xiv. 

 ff. Head longer than broad. 



g. Occipital process if present, not reaching the dorsal plate. 

 h. Fontanel not continued behind the eye. Ehamdia xv. 

 hh. Fontanel continued to base of occipital process. 



i. Orbit with a free margin; dorsal placed at least par- 

 tially in front of the ventrals; dorsal and pectoral with 

 a iJungent spine. Khamdella xvi. 



