C. Koford Journal 9 Addenda: Inside Chilibrillo Caves many (hundreds) of cockroaches 1 to 2" long on the walls and an occasional whip's scorpion, while- Bred fish up to 6" long in pools in the cave (not blind fish). Triathida, carriers of Chagas disease, also supposed to be common & Tropido said the bats have a possible reservoir for this disease. February 27, 1951 Chilibrillo Caves Sonoma Canal Zone murciélogo." Before the highway these caves were much less accessible than now. The largest cave was about 100 yards long with shallow clear water in part of it. Largest room about 30 feet high and 100 feet across. Clusters of up to 20 or 30 Phyllostomus hung from the ceiling. Bunches of Carollis were somewhat lower, & many of them flying about. Shot several Phyllostomus and netted part of a hanging bunch of Carollis. Netted a single bat without a leaf- nose but with tail protruding up halfway of posterior membrane. That 2 long faced reddish brown bats near the conchophylla". entrance to cave. No extensive mining of guano in this major cavern. In an adjacent cavern with ceiling only about 8' or 10' maximum, the vertical elevator was located. Many Carollis here and a few of the long-faced, extremely long- tongued, reddish brown bats (got 2). Then went into a narrow second cave about 2 to 3 feet wide and 6 to 15' high where Desmodus was said to be. Had to wade in water more than wait deep part of the way. Shot about 8 Desmodus in pockets and crevices overhead. The roosting places easily detected by the greasy black guano on the rocks below. Saw a few half grown young that were sorting up in this cave in a rather light place on wall; Tropido says they lived all year round. In all about 1000 Phyllostomus, 20 Desmodus, and 1500 Carollis seen. Tropido said Desmodus more tame and numerous than on any previous occasion he remembers. We drove to picnicking area a peak road along road and Tropido demonstrated how to select Phyllostomus from a hole in a hollow tree by blowing