Hanken, James 1978 Journal Oaxaca City Oaxaca Mexico 30 June Brad and I returned last night from a day an a half on Cerro Pelon attempting to fill in several remaining gaps in species distribution. We were, for the most part, unsuccessful, leaving gotten anom Thrinis at but one locality . The We worked several localities bet/ e. 9 and 12 miles N Guelatao but got no thornis. The woods were very wet and it rained almost constantly. Staying at Maclim we were told by a lumber mill worker that the heavy rain of late was greater than normal and due to a terrific storm hitting the area. Possibly the extreme wet has allowed th thornis to move into the litter and remain difficult to find. We did at one locality (see catalogue) we did collect two adult P. belli (♂+♀) together under a large log, and several skinks, snakes, and a rattlesnake by working rock rubble along the road. At Maclim we were told that the storm had caused a mudslide on the cloud forest side of C. Pelon, closing the highway. We drove to the slide and found it at 36.8 mi: N Guelatao, or only a few miles above where I need cloud forest thornis. We turned back deciding to