DHC8 FLT CREW FAILED TO CALL PIH TWR AT THE REQUESTED 4 MI FINAL AND LANDED WITHOUT CLRNC.

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ENRTE FROM IDAHO FALLS TO POCATELLO; I WAS THE PNF; MY FO WAS THE PF. ATC (POCATELLO TWR) TOLD US TO RPT A 4 NM FINAL. MEANWHILE; WE WERE STILL ABOUT 15 NM FROM THE FIELD. HOT WX AND GUSTING SURFACE WINDS OF 20+ KTS CREATED A TURBULENT FLT AT LOW ALT (CRUISE WAS ONLY 9000 FT) TWR WAS WORKING A LIGHT ACFT ON PRACTICE APCHS TO THE S (WE WERE INBOUND FROM THE N). AFTER LNDG; ATC STATED HE HAD NOT HEARD A 4 MI RPT FROM US. AFTER PARKING; I PHONED THE TWR AND ASKED IF WE HAD LANDED WITHOUT CLRNC; AS I NOW SUSPECTED. HE INDICTED WE HAD. I ASKED IF THERE HAD BEEN ANY TFC THAT WAS A FACTOR; HE SAID NO. I ALSO ASKED IF HE HAD US IN SIGHT PRIOR TO LNDG; HE SAID YES. I ASKED IF HE HAD FORGOTTEN TO CLR US TO LAND; HE INDICATED HE HAD. THIS DOES NOT RELIEVE ME OF MY REQUIRED CALL AT 4 NM. I JUST WANTED TO MAKE SURE HE HADN'T INTENTIONALLY FAILED TO CLR US TO LAND SINCE WE DID NOT GIVE A 4 NM CALL. I AM CERTAIN HE DID NOT DO THAT INTENTIONALLY. CONTRIBUTING FACTORS FOR CREW MEMBERS WERE FATIGUE AFTER AN EARLY RPT TIME; 6 LEGS OF FLYING AND I BELIEVE THAT BECAUSE WE HAD BEEN ON THE SAME APCH EARLIER THAT DAY -- IT SEEMED AS THOUGH WE HAD BEEN CLRED -- DEJAVIE IF YOU WILL. ALTHOUGH I FREQUENTLY VERIFY CLRNCS; THIS TIME I DID NOT. I INTEND TO INCREASE VIGILANCE IN THIS AREA IN THE FUTURE. SUPPLEMENTAL INFO FROM ACN 584089: AT 10 NM I REALIZED WE WERE STILL HIGH AND FAST FOR THE APCH AND CALLED FOR CONDITION LEVERS TO 1050 TO HELP SLOW FOR CONFIGN. I CALLED FOR APCH CHKLIST; AT 4 NM. AT ABOUT 800 FT I GLANCED AT THE LNDG; APCH AND TAXI LIGHT SWITCHES TO SEE THEY WERE ALL ON. AFTER ROLLOUT WE WERE INFORMED THAT WE MISSED THE 3 MI CALL BY TWR. I ASKED THE CAPT IF WE HAD BEEN CLRED TO LAND; HE SAID HE DIDN'T REMEMBER RECEIVING THE CLRNC AS DID I. CONTRIBUTING FACTORS -- UNFAMILIAR AREA; TURB; FATIGUE (WE WERE AT 10 HRS DUTY LATE OUT OF HUB TRYING TO MAKE UP SOME TIME). WE HURRIED THE APCH; AND MY ASSUMPTION THAT THE LIGHTS WERE TURNED ON UPON RECEIVING CLRNC ALLOWED ME TO LAND WITHOUT QUESTION. WE SHOULD HAVE SLOWED DOWN VIA A 360 DEG TURN. THIS WOULD HAVE ALLOWED US TO GET AHEAD OF THE ACFT AND MINIMIZE THE WORKLOAD.