Pearson-1989 30 seems to contain only skins, bones, scales and claws of lizards. Especially noteworthy were two broken crania of enormous tuco-tucos with very wide incisors. One chunk examined under the dissecting scope seems to be a conglomerate of rodent droppings, pieces of plant such as twiglets of cipres, small bones, all cemented into a hard mass by a hard tarry substance. Then we returned to the ranch headquarters, and Michael and I drove upstream past the shallow lake to a place where a huge cliff looms above the trail with maitens, berberis, Colletia "trees" etc at the base. Beginning at 10 p.m. I set 12 Shermans and 7 steel traps in cavy places and at the bottom of this cliff. No good sign. It was up on top of this c Cliff somewhere that Michael collected other samples of the tarry cave material. Camped in dry mallin at the bottom of the cliff. Dec. 15 - A wind came up during the night, and light rain. Traps held one large Auliscomys. Back to Bariloche at 10 a.m. Scattered clouds. Interview with Thomas Belloch, editor of Dendron, and his friend Linder. Dinner with Patricia Fierro and Jorge Valerini. Dec. 16 - Bariloche. Tried phoning BA re: delivery of specimens. No luck. Dinner and Children's Christmas Chorus in the cathedral with Arturo, Mane and Sr. Tarak. Dec. 17 - Both captive female longipilis gave birth. Tried phoning BA; no luck. Morning overcast. To Lago Gutierres for barbecue with Juliana and Claudio. They showed an ad for a 15000ha estancia on the shores of Lago Buenos Aires (Santa Cruz) with 8000 merino sheep, and spectacular casco... for U$S 650,000. At 9 p.m. we went to Arroyo Casa de Piedra. I set 27 Shermans in about the same line as last week in coihue/bamboo/rocks, and Anita set 27 as last week in radal/scrub. Evening mostly overcast. December 18 - My line had 4 Ako longi and 2 Oryzomys. Anita had 5 Ako longi, 2 Oryz, and 1 big Auliscomys. One longi escaped in handling, the Oryzomys and Auliscomys were released. Morning scattered clouds. Ctenomys called several times during the night and at daybreak. The call had 4 or 5 tucs in each element, separated by about 1 second. The San Ramon ones are shorter tuc-a-tuc. Processed mice and built shipping tubes. Christie, Gallopins, Patricia, Adrian all came to call (same time), then dinner at Rapoport with Adrian and Inez. December 19 - Bariloche. Packing and despedidos. December 20 - Took 7 live Akodon longipilis to Buenos Aires and delivered them to Martha Piantanida at her Animal colony.