How many total dismissals did the player for Guyana have?
CREATE TABLE "table1_27771406_1" (
  "no" real,
  "player" text,
  "club" text,
  "test_career" text,
  "tests" real,
  "catches" real,
  "stumpings" real,
  "total_dismissals" real
);
SELECT MAX("total_dismissals") FROM "table1_27771406_1" WHERE "club"='Guyana';