ON THE IDENTITY OF SOME TOADS OF THE GENUS BUFO FROM ECUADOR, WITH ADDITIONAL REMARKS ON ANDINOPHRYNE COLOMAI HOOGMOED, 1985 (AMPHIBIA: ANURA: BUFONIDAE). by Marinus S. Hoogmoed Hoogmoed, M.S.: On the identity of some toads of the genus Bufo from Western Ecuador, with additional remarks on Andinophryne colomai Hoogmoed, 1985 (Amphibia: Anura: Bufonidae). Zool. Verh. Leiden 250, 21-vii-1989: 1-32, figs. 1-12. — ISSN 0024-1652. Key words: Anura; Bufonidae; Bufo blombergi ; B. caeruleocellatus; B. caeruleostictus; B. chanchanensis; B. haematiticus; B. hypomelas; B. intermedius; Andinophryne colomai; Andes; Neotropics. Study of the type specimens of B. caeruleostictus Günther, 1859 and B. chanchanensis Fowler, 1913, and of fresh material showed that B. chanchanensis is a junior subjective synonym of B. caeruleostictus. Probably it is a member of the B. guttatus group. B. caeruleocellatus Fowler, 1913 is a junior subjective synonym of B. haematiticus Cope, 1862. New material of B. hypomelas Boulenger, 1913 is reported from NW Ecuador, the species is redescribed, and it is shown that this is a valid taxon, not the juvenile of B. blombergi Myers & Funkhouser, 1951 as suggested by Lynch, in Frost (1985). It is doubted whether B. intermedius Günther originates from Ecuador. It probably is a Central American or Mexican species of the B. valliceps Wiegmann, 1833 group. A short overview of the described species of Bufo in W. Ecuador and comments on the contents of the B. typhonius group are given. Additional material of Andinophryne colomai is reported and discussed. M.S. Hoogmoed, Rijksmuseum van Natuurlijke Historie, Postbus 9517,2300 R A Leiden, The Netherlands. RESUMEN Basandose en estudio de los ejemplares típicos de B. caeruleostictus y B. chanchanensis y en material recien recojido, se infiere que B. chanchanensis es un sinónimo subjetivo más reciente de B. caeruleostictus. Posiblemente B. caeruleostictus es un miembro del grupo B. guttatus. B. caeruleocellatus es un sinónimo subjetivo más joven de B. haematiticus. Se informe sobre material recien coleccionado de B. hypomelas del Noroeste del Ecuador, se describe la especie, y se muestra que es un taxon valido y que no es el joven de B. blombergi como sugiere Lynch. Se duda si B. intermedius es originario de Ecuador. Probablemente es un especie del America Central o de Mexico del grupo B. valliceps. Se presenta un sumario de las especies escritas del Oeste de Ecuador y se discuta el contenido del grupo B. typhonius. Tambien se discuta material adicional de Andinophryne colomai. INTRODUCTION Günther (1859: 415) described Bufo caeruleostictus on the basis of two adult specimens from the "Andes of Western Ecuador". The description was short but precise. Boulenger (1882b: 291) gave a short diagnosis and a good picture of the species. He added that the male has a subgular vocal sac, placing this 3