R. K. Salander, 1954 Vicinity of Zzuarde Matamoros, Puebla, Mexico. May 8 Bonnie, Lamb, and I drove to Tepehuané, 4600 ft., ± 10 mi. S Matamoros and hunted in good desert vegetation - candleabra, cordon-type cactus & mangroves - while Lambs' helper - Leopoldo - guarded camp. I collected 2 Caloitta formosa . three individuals had a higher-pitched screaming call than the birds in Chiapas - a good, readily noticeable difference - , a blue mockingbird, (general?) jocosus, Aimophila humeralis (abundant), Aimophila myzocalis (much less common), Contopus pertinax, ground cuckoo, and saw a large trogon, our motnot, or Myiarchus (large species). All but the cuckoos were I gone to hand! The good, rich desert vegetation thins out a few miles S Matamoros - but continues in less rich stands on some low hills a few miles north of that city. Lamb said he saw cactus wrens in some cactuses not far from the camp. Along the river near camp there are Canyon wrens, Thryothorus felix (Lamb has a specimen and I saw one bird in brush near our tent). In afternoon Bonnie & I drove into Puebla in attempt to buy powder & shot to load some 38 shells - but the America wouldn't take our check and we returned with only a supply of small shot. Last night we had dinner L. Forbes' in Matamoros.)