R. Zweifel Sept 21, 1951 Rana boylii series 288 SV length 63 mm. Dorsolateral folds distinct. Ground color dark yellow-green. Distinct spots on back measure 3-4mm in diameter - almost black. Hind toe tips dark. Eye very dark. Throat immaculate. Throat & underside a rich orangish-yellow; Tibia spotted rather than barred. SV length 69 mm. Similar to specimen above, but spots smaller (more 3 mm) and less distinct. Tibia barred but not with sharply defined markings. Cluster of melanophores from brownish marking on the throat, particularly toward the lip. SV length 65 mm. Similar to specimen immediately above but ground color with more of a gray tinge. Ventral color same. Throat immaculate. Tibia not barred. The frogs bear considerable resemblance to muscosa but differ in several respects which are summarized below.