"P. Brylski 1982 Journal 2 mi S. Kelso, San Bernardino Co., Calif 3 April scattered uniformly but sparsely (<1% covr), which is why I passed up this site last time. I figured P. merriami would occur in greater abundance than V. deserti Cn at the Olancha dune locality of 24 March 1982. In any case I set 160 traps, working till I nearly dropped from hunger (while fighting the night). 4 April Picked up the traps, with better than average success for deserti. (It seems 10% is a reasonable expectation for traps set at 20 m intervals in dune habitat). deserti ση(released) 10 φ "" 4 P. longimembri ση(" ) 1 V. merriami ση "" 2 V. deserti catalogued 8/ 25 = 15% success Four of these were φφ kept for their litters (PVB 613-616) Three φφ were sacrificed and catalogued, showing fairly early development embryos (though one was 12 mm C.R). One ση was kept, largely because it was half-dead in the trap. Three released φφ were mothers already -- v. distended mammary stretched & reddish genital regions. Again, the reprod. φφ seem to be bimodal: early and ❝ late (or, by now, mothers w/ young in the burrow).