J. D. Anderson 1958 Ambystoma m. croceum Jan. 9. Valenciaagoon, Piz del Mar, Santa Cruz Co. Calif. out - so few for the other four badly dessicated Euscatina. One can't presume whether or not the Ambystomas did any digging. It looks as though the pocket had formed by dripping or runoff & the salamander moved in. Had they had dug it, why aggregate ?? Why not each dig his own. I think there was a hole already & they moved in. Interesting as concerns competition. Ambystoma could survive a long while here but Euscatina were at death's door. Thus their was one favorable spot - occupied by A.m.c.; Euscatina excluded & die. Thus this would be mortality independent of density. 1 or 20 Euscatina would lie in some predicament. 2 other Ambystoma were found in the pool. These had cl. temps of 6.2° & 6.4° C. Both dead. Water was muddy, cold 6.0° C and brack of Hyla regilla. Interesting that there were no Ameides or Batrachoseps in pit. I think Ameides would be capable of climbing out. Probably Batrochs do not move enough to fall in. Temp. surface & ground adjacent to pit = 15.4° C. Humidity =