116 CALIFORNIA ACADEMY OF SCIENCES. 



gin pointing toward the tip, on the inner margin toward 

 the base. 



Abdominal region sometimes covered with small 

 papillae; anterior portion of the lateral line with larger 

 papillae or short tentacles. Lateral line sometimes not 

 extending to the caudal fin. 



Chocolate color; head faintly marked with lighter; a 

 zig-zag light bar from the gill-openings across the nape; 

 dorsal dark brown, a short transparent bar on the lower 

 half of the last four dorsal rays; base and posterior third 

 of the caudal dark brown, the intermediate region trans- 

 parent, with dark mottlings; anal dark brown, margined 

 with white, and a white bar on the lower half of the last 

 five rays; ventrals and pectorals dark brown. 



Head 3i; depth 5; Br. 8 or 9; D. I, 6; A. 10. 



No. 8133, one specimen .063 m. Gurupa. 



No. 8157, one specimen .045 m. Tajapuru. 



No. 7732, two specimens .093 m. and .114 m. Tefife,. 

 collected by Professor Louis Agassiz. 



No. 7332, one specimen .12 m. Jutahy. Thayer Ex- 

 pedition, 



XV. Rhamdia. 



Pimelodus Lacepede, Hist. Nat. Poiss. v, (sp.) 

 Pimelodus Cuvier, Regne Animal, 1817 (sp.) 

 Pimelodus Giinther, Cat. Fish, Brit. Mus. v, 1864 (sp.) 

 Pteronotas Swainson, Hist. Fish. Rept. Amph. ii, 309, 

 1839 {b-tentacidatus) preoccupied in Mollusks. 



Rhamdia Bleeker, Ichthyol. Arch. Ind. Siluri. 197,, 



1858 (sp.) 



Rhamdia Bleeker, Nederl, Tijdschr, Dierkunde, i,, 

 1863, 101 (queleni). 



Pimelonotus Gill, Ann, Lye. Nat. Hist. N. Y. iv, 391, 



1859 (vilsoni). 



Notoglanis Giinther, Cat. Fish. Brit, Mus. v, 136, 1864 

 {7)iultiradiatus) . 



