EXHIBIT 99.5 Southern Mineral Corporation 1201 Louisiana Street, Suite 3350 Houston, Texas 77002-5609 __________ ___, 2001 Dear Shareholder: As you know, our shareholders approved the merger of Southern Mineral into a subsidiary of PetroCorp Incorporated on May 8, 2001. We expect this merger to close on or about ___________ ___, 2001. One of the provisions related to the merger is that Southern Mineral shareholders will receive cash as their consideration in the merger, unless they elect to receive PetroCorp stock by making a valid stock election. We have enclosed the form by which you may elect to receive stock consideration or a combination of stock and cash consideration in the merger. If you so desire, please complete this form, and mail it back to us in the enclosed envelope by no later than ___________ _____, ______. If you return this form prior to that date, you may change your election up to that date or any later date which we publicly announce. If you do not return this form, you will receive cash consideration in exchange for all the shares of Southern Mineral stock you own. For each share of Southern Mineral common stock for which you elect to receive stock consideration, you will receive .471 shares of PetroCorp common stock. The price paid per share of Southern Mineral common stock for which you make no stock election will be $4.71. On _________ _____, 2001, the closing price of the Southern Mineral common stock was $_______ and the closing price of the PetroCorp common stock was $_______. If you elect to receive stock consideration in the merger, you may be subject to pro rationing. PetroCorp will not issue more than 4,000,000 shares of common stock as consideration in the merger. Accordingly, if Southern Mineral shareholders elect to receive more than 4,000,000 PetroCorp shares, each shareholder's stock election will be reduced pro rata, as more fully described in the joint proxy statement/prospectus of Southern Mineral and PetroCorp dated ____________ _______, 2001 (SEC File No. 333-54544). The consideration for the balance of your Southern Mineral common stock will be in the form of cash consideration. None of Southern Mineral, PetroCorp, the Board of Directors of Southern Mineral or the Board of Directors of PetroCorp make any recommendation to you as to whether you should elect to receive stock consideration in the merger. For further information about the merger, Southern Mineral and PetroCorp, please see the joint proxy statement/prospectus of Southern Mineral and PetroCorp and the information pertaining to PetroCorp incorporated by reference into the joint proxy statement/prospectus. Sincerely yours, Steven H. Mikel President and Chief Executive Officer FORM OF STOCK ELECTION Capitalized terms not defined in this Form of Election shall have the meanings set forth in the Agreement and Plan of Merger among PetroCorp Incorporated, PetroCorp Acquisition Company, and Southern Mineral Corporation dated as of December 22, 2000, as amended. ________________________________________________________________________________ NAME AND ADDRESS OF HOLDER OF RECORD AS SHOWN ON RECORDS OF SOUTHERN MINERAL CORPORATION STOCK ELECTION LIST HERE NUMBER OF SHARES OF SOUTHERN MINERAL COMMON STOCK FOR WHICH SHARES OF PETROCORP COMMON STOCK ARE ELECTED Number of Shares:________________________ OR Mark the following box to indicate that you elect PetroCorp common stock in exchange for ALL shares of Southern Mineral common stock you hold. [______] For each share of Southern Mineral common stock for which you elect to receive stock consideration, you will receive .471 shares of PetroCorp common stock,subject to proration if Southern Mineral shareholders elect to receive more than 4,000,000 shares of PetroCorp common stock. The price paid per share of Southern Mineral common stock for which you make no stock election will be $4.71. For further information about the merger, Southern Mineral and PetroCorp, please see the joint proxy statement/prospectus of Southern Mineral and PetroCorp dated __________ __, 2001 (SEC File No. 333-54544) and the information pertaining to PetroCorp incorporated by reference into the joint proxy statement/prospectus. SIGN HERE ________________________________________________________________________________ ________________________________________________________________________________ Signature(s) of Owner(s) ________________________________________________________________________________ Name(s) ________________________________________________________________________________ ________________________________________________________________________________ (Please Print) Capacity (full title) ________________________________________________________________________________ Address ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ (Include Zip Code) Area Code and Telephone Number ________________________________________________________________________________ Taxpayer Identification or Social Security Number ________________________________________________________________________________ (Must be signed by registered holder(s) exactly as name(s) appear on the certificates. In the case of joint tenants, both should sign. If the certificates for the Southern Mineral common stock are registered in different forms of the name of any person signing this Form of Election (e.g., "John Smith" on one certificate and "J. Smith" on another), it will be necessary for such person either to sign this Form of Election in each way in which the certificates are registered or to sign as many Forms of Election as there are different registrations. When signing as agent, attorney, administrator, executor, guardian, trustee, or in any other fiduciary or representative capacity, or as an officer of a corporation on behalf of the corporation, please give full title as such.)