GUYANA: Mazaruni-Potaro: Kartabo, AMNH 70971; Membaru River, upper Mazaruni River, UMMZ 85168; Oko Mountains, FMNH 26722-3. North West: Amakura River, Haulover, UMMZ 83558-9. Rupununi: Marudi River, AMNH 46233; Shudi-kar-wau, AMNH 49252. West Demerara: Dunoon, UMMZ 52449, 52508.
PERÚ: Junín: Chanchamayo, BMNH 1911.12.13.79-80. Loreto: Andoas, AMNH 79984-5; Cashiboya, AMNH 43454; San Antonio, Río Itaya, AMNH 43218. Puno: Yahuaramayo, BMNH 1913.2.25.7.
SURINAM: Suriname: Powakka, CM 44217.
SOUTH AMERICA: No specific locality, NHMW 6208.
Osteocephalus leprieurii
BRASIL: Acre: Tarauacá, FMNH 83247. Amazonas: Rio Javarí, Benjamin Constant, CAS-SU 12620; Río Uaupés, north of Rio Japú, NHMG 489.
COLOMBIA: Amazonas: Gino-goje, lower Río Apoporis, MCZ 28038, 28040-2, 28044, USNM 152136-8.
ECUADOR: No specific locality, WCAB 35452-3; "Napo-Pastaza," USNM 166571. Napo: Avila, UMMZ 92093; south slope Cordillera del Dué, KU 123170; Lago Agrio, KU 125961-2 (skeletons), 126611-44, UMMZ 129326 (2); Limón Cocha, Río Napo, KU 99210-6, UIMNH 63087-9, 63098, 63106-9, 63118-9, 64802-4, 64858, 87998-9, 88001-30, 88437-8, 88580, 88604-5, 89852-97, 89999-90000; Loreto, CAS-SU 11439, WCAB 36526; Puerto Libre, Río Aguarico, KU 123190-1; Puerto Napo, UIMNH 55818-20; Río Cotapino, UMMZ 92094; Río Napo, UMMZ 92078; Santa Cecilia, AUM 8099, 8102, 8113-5, 8127-9, 8131, 8137, 8139-46, 8148, KU 105210-20, 109509-11, 111971, 122964-87, 123169, 126645. Pastaza: Canelos, BMNH 1947.2.13.42, KU 120915; Río Alpayacu, UMMZ 92079; Río Arajuno, USNM 166560-2, WCAB 40176; Río Oglán, USNM 16655203, 166558; Río Rutuno, USNM 166559; Río Shilcayacu, below Puyo, USNM 166557; Río Villano, USNM 166551.
FRENCH GUIANA: No specific locality, MNHN 4629. Inini: Lunier River, MNHN 98/217.
GUYANA: Mazaruni-Potaro: Kartabo, AMNH 70967-8, 70972, 70976. Rupununi: Shudi-kar-wau, AMNH 49255. West Demerara: Demerara Falls, BMNH 72.10.16.23, 72.10.16.37-8.