Fig. 13 in Herpetofauna Of The Yutajé -Corocoro Massif, Venezuela: Second Report From The Robert G. Goelet American Museum-Terramar Expedition To The Northwestern Tepuis

Fig. 13. Diagnostic iris patterns retained in preservative, roughly Χ10–12. A: Hyalinobatrachium crurifasciatum Myers and Donnelly, right eye of holotype (AMNH 1313293)—showing horizontal pupil through the transparent nictitating membrane. B: Hyalinobatrachium eccentricum, new species, left eye of holotype (EBRG 30493)—showing dark central section of iris (the horizontal pupil is not evident in this photograph owing to lack of contrast); the nictitating membrane is deflected downward. C: Enlarged rendition of field sketch of eye of Hyalinobatrachium eccentricum, after specimen had been relaxed in chloretone solution. In addition to the rough field drawing, the central part of the iris was noted as ''domelike, with flattened lower side, and brown (little contrast with horizontal pupil)''. The median dark zone regained an elliptical shape after preservation (as in part B above).