24 MEMOIRS OF THE CARNEGIE MUSEUM 



45. Pimelodus cristatus Muller & Troschel, p. Takutu and Mahu. 16-18 in. = Pimodella cris- 



628. tata (Muller & Troschel). 



46. Pimelodus foina Muller & Troschel, p. 628. Takutu. 7-8 in. = Rhamdella foina (Muller & 



Troschel. 



47. Pimelodus eques Muller & Troschel, p. 628. All rivers. 16-18 in. = Gceldiella eques (Muller 



& Troschel). 



48. Pimelodus stegelichii Muller & Troschel, p. Forest brooks. 10-12 in. = Rhamdia sebw Cu- 



628. vier & Valenciennes). 



49. Calophysus macropterus Muller & Tros- Essequibo. 12 in. = Callophysus macropterus 



chel, p. 629. (Lichtenstein) . 



50. Auchenipterus maculosus Valenciennes, p. Essequibo. 4-6 in. = Trachycorystes galeatus 



629. (Linnaeus). 



51. Auchenipterus furcatus Valenciennes, p. Essequibo. 6-8 in. = Pseudauchenipterus nodo- 



692. sus (Bloch). 



52. Doras armatulus Valenciennes, p. 629. Rupununi and Awaricuru. 10 in. = Doras costa- 



tus (Linnaeus). 



53. Doras niger Valenciennes, p. 629. All rivers. 10-12 in. = Oxydoras niger (Valen- 



ciennes). 



54. Doras carinatus Valenciennes, p. 629. Essequibo. 10-12 in. = Hemidoras carinatus 



(Linnaeus). 



55. Doras maculatus Valenciennes, p. 629. Essequibo. 2 ft. = Doras granulosus (Valen- 



ciennes). 



56. Callichthys coelalus Cuvier & Valenciennes, Trenches. 4-6 in. = Callichthys callichthys 



p. 630. (Linnaeus). 



57. Callichthys exaratus Muller & Troschel, Trenches. 4-6 in. = Hoplosternum thoracatum 



p. 630. (Cuvier & Valenciennes). 



58. Callichthys pictus Muller & Troschel, p. Trenches. 4-6 in. = Hoplosternum thoracatum 



630. (Cuvier & Valenciennes). 



59. Aspredo Icevis Valenciennes, p. 630. Waini. = Aspredo aspredo (Linnaeus). 



60. Aspredo tibicen Temminck, p. 630. Coast. 10-12 in. = Aspredinichthys tibicen 



(Temminck). 



61. Acanthicus hystrix Spix, p. 630. Takutu and Rio Branco. 3-3^ ft. = Acanthicus 



hystrix Spix. 



62. Loricaria cataphracta Linnaeus, p. 631. Rupununi. 8-10 in. = Loricaria cataphracta 



Linnaeus. 



63. Loricaria acuta Valenciennes, p. 631. Rupununi. 8-10 in. = Loricariichthys microdon 



Eigenmann. 



64. Loricaria platyura Muller & Troschel, 631. Rupununi. 8 in. = Loricariichthys platyura 



(Muller & Troschel). 



65. Hypostomus commersonii Valenciennes, p. Takutu. 6-8 in. = Plecostomus verres (Cuvier 



631. & Valenciennes). 



66. Hypostomus itacua Valenciennes, p. 631. Takutu. 3-4. = Hemiancistrus braueri Eigen- 



mann. 



