if (pow > 90 && one_chance_in(3))
            mon = MONS_GREY_SNAKE;
        if (pow > 70 && one_chance_in(3))
            mon = MONS_BLACK_SNAKE;

        if (pow > 20 && one_chance_in(3))
            mon = MONS_BROWN_SNAKE;

        if (pow > 70 && one_chance_in(3))
            mon = MONS_BLACK_SNAKE;

        if (pow > 20 && one_chance_in(3))
            mon = MONS_BROWN_SNAKE;

        if (pow > 90 && one_chance_in(3))
            mon = MONS_GREY_SNAKE;

// last updated 13mar2001 {gdl}

 * called from: acr - lev-pand - monplace - dungeon
 *
 * Usage:
 * mon_type     WANDERING_MONSTER, RANDOM_MONSTER, or monster type
 * behaviour     standard behaviours (BEH_ENSLAVED, etc)
 * target       MHITYOU, MHITNOT, or monster id
 * extra        various things like skeleton/zombie types, colours, etc
 * summoned     monster is summoned?
 * px           placement x
 * py           placement y
 * level_type   LEVEL_DUNGEON, LEVEL_ABYSS, LEVEL_PANDEMONIUM.
 *              LEVEL_DUNGEON will generate appropriate power monsters
 * proximity    0 = no extra restrictions on monster placement
 *              1 = try to place the monster near the player
 *              2 = don't place the monster near the player
 *              3 = place the monster near stairs (regardless of player pos)

 * Creates a monster near the place specified in the mgen_data, producing
 * a "puff of smoke" message if the monster cannot be placed. This is usually
 * used for summons and other monsters that want to appear near a given
 * position like a summon.

int create_monster( mgen_data mg );

/* ***********************************************************************
 * Primary function to create monsters. See mgen_data for details on monster
 * placement.
 * *********************************************************************** */

int create_monster( mgen_data mg );

/* ***********************************************************************
 * This isn't really meant to be a public function.  It is a low level
 * monster placement function used by dungeon building routines and
 * mons_place().  If you need to put a monster somewhere,  use mons_place().
 * Summoned creatures can be created with create_monster().
 * *********************************************************************** */
int place_monster( mgen_data mg );

// last update 13mar2001 {gdl}
/* ***********************************************************************
 * called from: dungeon monplace
 *
 * This isn't really meant to be a public function.  It is a low level
 * monster placement function used by dungeon building routines and
 * mons_place().  If you need to put a monster somewhere,  use mons_place().
 * Summoned creatures can be created with create_monster().
 * *********************************************************************** */
int place_monster( mgen_data mg );