A PLT AND INSTRUCTOR LANDED GEAR UP WHILE PRACTICING XWIND LNDGS. THE INSTRUCTOR RPTS THAT HE WAS BUSY CORRECTING THE PLT'S APCH AND THAT THE OVERSENSITIVE STALL WARNING HORN MAY HAVE DESENSITIZED HIM TO THE GEAR WARNING HORN.

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A STUDENT (TOTAL TIME 180 HRS IN A C177RG) AND I (TOTAL TIME 1600 HRS); WERE PRACTICING XWIND LNDGS TO RWY 32 AT CRAIG ARPT IN THE STUDENT'S CARDINAL RG. ON THE THIRD DOWNWIND; I NOTICED THAT THE STUDENT HAD NEGLECTED TO LOWER THE GEAR AND COMPLETE THE LNDG CHKLIST. I WAITED TO SEE IF HE WOULD PUT THE GEAR DOWN AND COMPLETE THE CHKLIST BY THE ABEAM POS BUT TO NO AVAIL. ONCE PAST THE ABEAM POS; I PROMPTED HIM TO BRING DOWN THE GEAR AND COMPLETE THE CHKLIST. SIMULTANEOUSLY; THE TWR CALLED; GIVING LNDG CLRNC. WHILE I RETURNED THE CALL TO TWR; I NOTICED MY STUDENT COMPLETING THE LNDG CHKLIST. AT THE SAME TIME; I NOTICED HE WAS OFF ALT AND AIRSPD AND I BEGAN INSTRUCTING HIM TO GET BACK ON PROFILE. THE REST OF THE APCH REQUIRED CONSTANT INSTRUCTION TO MAINTAIN PROPER AIRSPD AND PITCH FOR DSCNT UNTIL TOUCHDOWN. BOTH THE STUDENT AND THE INSTRUCTOR BECAME OVERLOADED AND THE LNDG CHKLIST WAS NOT REVIEWED AGAIN. THE GEAR WARNING HORN EITHER DID NOT SOUND OR WAS NOT NOTICED WITH PWR BACK PAST THE ABEAM POS UNTIL TOUCHDOWN. THE STALL WARNING; HOWEVER; IS OVERLY SENSITIVE AND COULD BE HEARD ALMOST CONSTANTLY IN ANY CONFIGN DURING TKOF AND CLB OF SPDS UP TO 90 MPH. THIS FACT COULD HAVE DESENSITIZED US TO THE SOUND OF THE GEAR WARNING HORN; IF IT WORKED AT ALL. ON THIS DAY THE WINDS WERE GUSTY AND THE STALL WARNING SOUNDED THROUGHOUT THE LNDGS. I COULD HAVE AVOIDED THIS INCIDENT BY NOT LETTING THE STUDENT'S LACK OF HABIT PATTERNS AND WEAK BASIC AIRWORK DISTRACT ME FROM FOLLOWING MY NORMAL PROCS AND CHKING THE GEAR DOWN AND LOCKED SEVERAL TIMES BEFORE LNDG.