Greene, H. 1991 June 21 (continued) mazinus and B. cf. leuthneri, and a leaping Hyla or Kang, a light rain still falling. Walking along the beach at Playa Hermosa we heard a lost frog chorus, localized it to a large pond beside a house and just inland from the beach edge, and thought we heard B. mazinus, cf. Smilizia, and one other species. June 22 Playa Hermosa, Guanacaste Prov., Costa Rica At breakfast we arranged for a boat in order to search for Pelamis platurus in Bahia de Culebra: the waiter referred us to Mita the cook, a former pescadero who took us to Jesus brothers who lived w/ there mother, six other brothers, and six sisters in the house next to the "frog pool", perhaps 200m North of Cobinas Playa Hermosa. From 1100-1230hr we traveled w/ Freddy and Albani around Islas Pelonas in the same general area I saw w/ Alejandro Solozar except this time we saw not one really good slice w/ a line of debris in it, nor Pelamis. The morni was partly cloudy and hot - again I marveled that the Pelamis float and endure that U.V. load. The brothers say sea snakes are most commonly seen in October, and then even wash up on the beach and are a hazard to children; that last year a Canadian was paying $3000/snake (approx $30). Water was blue and fairly calm today. Paid them $2200 for 1/2 hours, much cheaper than w/ Alejandro at Playa del