19 July Color description: Top of head often green as is also the anterior part of the dorsum. A touch of green is also present just below the dark canthus stripe. Venter immaculate. Posterior parts of thighs often have a yellowish wash. Others frozen whole by Wright. 325 Bufa mazatlanensis caught by the local boys in the sinker tanks behind the tannery on the north edge of town. 326 Kiwoostown somoriense : found by John Wright in a shallow, muddy irrigation ditch near the river. 327-331 Sceloporus clarki : widespread in the larger acacia trees throughout the area. 332-334 Urosaurus ornatus : widespread and relatively common - but less so than at the last locality of Barrancora. Holbrookia elegans : one seen by John Wright 335-338 Callisaurus draconoides : relatively common but again less so than at Barrancora. The two smallest specimens appear to be young of the year.