female. In two open shallow bocas we found a toad. Picked up traps at 1 p.m. None had been disturbed. The tuco caught was in a pure sand dune on the edge of the river, but with the yellow-flowered shrub and Larrea. It seems to be Ctenomys emiliae. The color is same as mendocinus, but tail is longer, and body larger. All the burrows excavated were large enough to get your hand into. Much of this dune area in the triangle between the two rivers is flooded periodically; we could see flotsam caught in the bushes. Only the higher dunes would be above water. There seem to be similar low dunes across the bridge over the Rio Neuquen and down stream. I don't know why Ct. emiliae couldn't wash down to there during high water. Then headed south from Chos Malal but took a wrong turn (unmarked) onto a road under construction toward Las Lajas. A couple of hours later we emerged at Las Lajas having seen one long slender snake DOR and a rhea that crossed the road with 11 very small young maybe 29 km NE of Las Lajas. Camped at the bridge over the Rio Covunco. Cool, windy. November 29.- Zapala to Bariloche. Morning cold. Drove into Zapala for gas. A paisano hitch-hiker that we picked up a few kms west of Zapala, when asked what animals lived thereabouts, came up with rhea, pichi armadillo, hares AND rabbits, and grey fox; no guanaco, no tuco tucos. A little south of Zapala we began to see a few sheep; until then all goats. Picked up a grey fox DOR along the Rio Collon Cura about 10 km west of the bridge. Squashed hare count: San Rafael-Chos Malal 1; Chos Malal-Zapala 1; Zapala-La Rinconada 2; La Rinconada-Confluencia 1; Confluencia-Bariloche 1. Seven big Buteos were gathered at the Collon Cura hare carcase. It came as a surprise to see our first native tree since Chile (except willow) as we approached Confluencia along the reservoir: a couple of little chacay and maitens, then some cipres (Austrocedrus). There were fresh tuco diggings at the Ct. sociabilis site 10 km N Nahuel Huapi. December 1.-Bariloche. Looked at more of Adam Hajduc's mouse bones from his dig on Isla Victoria. Auliscomys is the most abundant, but also represented are Irenomys, Chelemys, Geoxus, guinea pig, Phyllotis, and Akodon. Several guinea pigs! Tea at Nelly Neumeyer's at km 1 on the Llao Llao route. She remembers tucos in her yard as a child, plus all sorts of birds. Now nothing but chimangos. She says Rosa mosqueta was brought in about 1915-1920 at the same time that a lot of things were brought in from Chile. Scotch broom came somewhat later. Huemuls used to be common in her father's time, and unbelievably tame. One even came into the pup tent of one of the old- timers. The earwigs have only been here for 10 or 20 years. December 3.-Slight drizzle. Went up Cerro Otto. Set 8 tuco traps about 10 a.m., and Anita set 18 Shermans for Abrothrix. Then dug rhizomes of bamboo.