TITUSVILLE, Fla. (AP) _ The man prosecutors described as a ''vampire rapist'' beat his head against his jail cell wall after a judge sentenced him to 25 years for assaulting a vacationer whose blood he allegedly drank during the attack.

Calling John B. Crutchley's crimes brutal, Circuit Judge John Antoon on Monday exceeded state sentencing guidelines that recommend a total of 12 to 17 years in prison on the one count of kidnapping and three counts of sexual battery. Antoon also sentenced Crutchley to 50 years of probation to follow the prison term.

''I don't think it's adequate for what he did, but it'll have to do for now,'' said the 19-year-old victim's mother, reached by telephone in California. Her daughter ''thinks he should have gotten the death penalty,'' the woman said.

Crutchley agreed to the guilty pleas in April, in exchange for dismissal of eight other charges, including robbing his victim of blood by extracting it with needles during the November assault at his Malabar home.

After the sentencing Monday, Crutchley began smashing his head against the cell wall, said his lawyer, Joe Mitchell.

''He's disgusted that society would flush him down the toilet when he's got so much to offer,'' said Crutchley's wife, Karen.

''I can't see why it exceeded the guidelines,'' she said. ''It was a gentle rape, devoid of any overt brutality.''

The 25-year prison sentence came on one count of sexual battery, said Assistant State Attorney Michael Hunt. Crutchley received a 20-year probation period on the kidnapping charge and 15 years for each of the other two counts of sexual battery.

''We're very pleased, very satisfied with the sentences,'' said Hunt. His boss, State Attorney Norm Wolfinger, had urged Antoon last week to impose a stiffer sentence than the guidelines call for on the grounds that there was little chance of rehabilitation.

Crutchley is being investigated in the deaths of several women whose bodies have been found in Brevard County since 1985, said Hunt.