Here they are, 10 determined females to be reckoned with. The sultriest, shapeliest and most calculating women in genre-film history. Priscilla Lawson Steamed up: The Phantom Rider, Test Pilot, Flash Gordon The one to watch: Flash Gordon Why: Darkly demonic Lawson blends pathos and lust as the lovelorn Princess Aura, daughter of Ming, who pines away for tousle-haired Buster Crabbe. In a word: Aura-some Nina Bara Steamed up: The Black Hills, Space Patrol, Missile to the Moon The one to watch: Missile to the Moon Why: Bara's scenery-chewing role as the sultry Alpha, who betrays her Queen, the better to lust after burly Richard Travis. In a word: Kitch-xotic Coleen Gray Steamed up: The Phantom Planet, The Vampire, The Leech Woman The one to watch: The Leech Woman Why: Gray is alternately pathetic and voluptuous, murdering lovers and siphoning off the bodily fluids that keep her young. In a word: Draining Laurie Mitchell Steamed up: Queen of Outer Space, Missile to the Moon, Attack of the Puppet People The one to watch: Queen of Outer Space Why: Shapely, slit-skirted Mitchell is the scarred, male-hating Queen of a manless planet, though most associate co-star Zsa Zsa Gabor with the title role. In a word: Royal-tease Peggie Castle Steamed up: Invasion U.S.A., Beginning of the End, Back From the Dead The one to watch: Back From the Dead Why: Castle in a dual-role (aided by a snazzy camera trick or two) as the new bride of Arthur Franz, whose body is inhabited by the spirit of his previous, evil spouse. In a word: Possessive Mari Blanchard Steamed up: Abbott & Costello Go To Mars, She Devil, Twice-Told Tales The one to watch: She Devil Why: Blanchard is sultry, flinty and altogether without a conscience as the unstoppably seductive result of science gone horribly wrong. In a word: Babe-Ruthless Mara Corday Steamed up: Tarantula, The Giant Claw, The Black Scorpion The one to watch: Fooled ya -- I'm going with Problem Girls Why: I don't care that it's not sci fi, young Mara as a wild-eyed fire-bug meets the criteria as far as I'm concerned. And that shower scene ... In a word: Flame-buoyant Marla English Steamed up: The She-Creature, Voodoo Woman, Shield For Murder The one to watch: Voodoo Woman Why: She's a shapely, hard-bitten broad in a sarong. No wonder Tom Conway wants her to lead his army of genetically engineered superwomen. In a word: Voodoorific Yvette Vickers Steamed up: Attack of the Giant Leeches, Attack of the 50 Foot Woman, I, Mobster The one to watch: Attack of the Giant Leeches Why: The atmosphere is by turns sexy and stifling, especially during scenes between Yvette and frustrated hubby Bruno Ve Sota, who whimpers and pleads as his hillbilly buddies gossip in the next room. In a word: Swamptuos (or Leechy-keen, if you will.) Allison Hayes Steamed up: Attack of the 50 Foot Woman, The Undead, Disembodied The one to watch: The Undead Why: Everybody goes with 50 Foot Woman, but Hayes is far more appealing in The Undead. Her breast-enhancing, leather bodice, easily two sizes too small, is justification enough. In a word: Uplifting