               IN THE UNITED STATES COURT OF APPEALS
                       FOR THE FIFTH CIRCUIT



                           No. 98-30771
                         Summary Calendar



                     UNITED STATES OF AMERICA,

                                            Plaintiff-Appellee,

                              VERSUS

                         DWAYNE MARSHALL,

                                            Defendant-Appellant.

                       --------------------
           Appeal from the United States District Court
              for the Eastern District of Louisiana
                        USDC No. 98-CV-906
                       USDC No. 92-CR-214-F
                       --------------------

                          August 19, 1999

Before DAVIS, EMILIO M. GARZA, and, DENNIS, Circuit Judges

PER CURIAM:*

     Dwayne Marshall, federal prisoner # 22998-034, has appealed

the district court’s dismissal of his 28 U.S.C. § 2255 motion to

vacate.   The district court held that the action was barred by the

one-year statute of limitations set forth in § 2255, without

reaching the merits of Marshall’s substantive claims. However, the

court granted a certificate of appealability (COA) only on his

claim that the Government had failed to reveal evidence favorable

to the defense.

     *
        Pursuant to 5TH CIR. R. 47.5, the court has determined
that this opinion should not be published and is not precedent
except under the limited circumstances set forth in 5TH CIR.
R. 47.5.4.
                            No. 98-30771
                                 -2-

     Marshall has briefed the issues but he has not requested a COA

from this court on the limitations issue.      “In order to obtain

appellate review of the issues the district court refused to

certify, [Marshall] must first make the threshold substantial

showing of the denial of a constitutional right.         Only after

clearing this hurdle may [he] proceed to brief and we review the

merits of the rejected issues.”    United States v. Kimler, 150 F.3d

429, 431 n.1 (5th Cir. 1998) (citation omitted).

     When the threshold issue in a § 2255 appeal is not of

constitutional dimension, such as the limitations issue in this

case, the petitioner must make a credible showing that the district

court erred in dismissing the petition on that ground.    See Davis

v. Johnson, 158 F.3d 806, 809 (5th Cir. 1998), cert. denied, 119 S.

Ct. 1474 (1999); United States v. Carter, 117 F.3d 262, 264 n.1

(5th Cir. 1998).   “Only if such a showing of error is made will the

court also consider whether the prisoner has made a substantial

showing of the denial of a constitutional right on the underlying

claims.” Sonnier v. Johnson, 161 F.3d 941, 943-44 (5th Cir. 1998).

     It is not clear whether the district court intended to grant

a COA on the threshold limitations issue.    Accordingly, the cause

will be REMANDED so that the district court may clarify its COA

order.   In the event that the district court denies a COA on the

limitations issue, Marshall may request such a COA from this court.

See Kimler, 150 F.3d at 431 n.1.

     REMANDED.
