C. ZIEGELER 1956 MICROTUS CANIFENICUS MAY 6 POINT ISABOU, CONTRA COSTA CO., CALIF. (Cont) CAUGHT HOTTAGE MICROTUS (ONLY) Today, I more on a knnock + 3 on BRUSHS ROAD EDGE SCORING DOWN 2 OR 3 FT TO SONIC. MARSH. Nov. 3-4 2 MI. W BADEN STATION, 500 FT., SAN MATEO CO, CALIF. 4 AT 6:00 PM, 3 AT 9:00 PM (Nov. 3) AND 5 AT 6:30 AM (Nov. 4) IN COW MOUSE PASTURES. TRAPPED IN CENTERS OF JUNCUS CLUMPS AND ONCE IN BRACE + FERN UNDER BRUSH AT EDGE OF FIELD ON ROAD SHOULDER. NO STANDING WATER MORE BUT A FEW PARTS OF FIELD WERE VERY SOIL. MICE TRAPPED IN BOTH MOIST AND DRY CLUMPS. TWO SEVERAL OTHER TRAPS SPRUNG + DRAGGED PERHAPS BY THIS SPECIES. TOOK MANY RATHUS + 2 PEROMYSCUS MANICULATUS IN THESE SAME SPOTS. IN REST OF PASTURE GRASS IS PROBABLY TOO SHORT TO SUPPORT CONEORINGA RUNS UNLESS THE MICROTUS HAVE UNDERGROUND RUNS THERE. SAW ONE POSSIBLE MORE RIGGE AMONG THE JUNCUS CLUMPS. 1.5 MI. S, 1 MI. W MILLBRAE, 400 FT., SAN MATEO CO. 2 TAIEN AT 9:00 PM (Nov. 3) + NONE AT 7:30 AM (Nov. 4) ON DAMP SHADY HILLSIDE 15-20' ABOVE UN- PAVED ROAD. ABOVE TRAP LINE MORE SHADY WOODS BUT ACROSS ROAD SOME AREAS OF BAECHNIS + SHORT SPARSE GRASS - NOT TYPICAL M. CROUS GROUND. THO. GOT R. CANIFENICUS,