On following pages: 57. Yellow-crowned Brush-tailed Rat (/sothrix bistriata); 58. Plain Brush-tailed Rat (/sothrix pagurus); 59. Sinnamary Brush-tailed Rat (/sothrix sinnamariensis); 60. Tuft-tailed Spiny Tree-rat (Lonchothrix emiliae); 61. Ferreira's Spiny Tree-rat (Mesomys hispidus); 62. Long-haired Spiny Tree-rat (Mesomys leniceps); 63. Hidden Spiny Tree-rat (Mesomys occultus); 64. Para Spiny Tree-rat (Mesomys stimulax); 65. Amazon Bamboo Rat (Dactylomys dactylinus); 66. Bolivian Bamboo Rat (Dactylomys boliviensis); 67. Montane Bamboo Rat (Dactylomys peruanus); 68. Atlantic Bamboo Rat (Kannabateomys amblyonyx); 69. White-tailed Olalla Rat (Olallamys albicauda); 70. Greedy Olalla Rat (Olallamys edax). in Echimyidae

On following pages: 57. Yellow-crowned Brush-tailed Rat (/sothrix bistriata); 58. Plain Brush-tailed Rat (/sothrix pagurus); 59. Sinnamary Brush-tailed Rat (/sothrix sinnamariensis); 60. Tuft-tailed Spiny Tree-rat (Lonchothrix emiliae); 61. Ferreira's Spiny Tree-rat (Mesomys hispidus); 62. Long-haired Spiny Tree-rat (Mesomys leniceps); 63. Hidden Spiny Tree-rat (Mesomys occultus); 64. Para Spiny Tree-rat (Mesomys stimulax); 65. Amazon Bamboo Rat (Dactylomys dactylinus); 66. Bolivian Bamboo Rat (Dactylomys boliviensis); 67. Montane Bamboo Rat (Dactylomys peruanus); 68. Atlantic Bamboo Rat (Kannabateomys amblyonyx); 69. White-tailed Olalla Rat (Olallamys albicauda); 70. Greedy Olalla Rat (Olallamys edax).