South Dakota Codified Laws
Chapter 10 - (Rule 12.2) Notice Of Mental Illness Defense
Section 23A-10-2 - Form of plea raising defense.

23A-10-2. Form of plea raising defense.
A defendant in a criminal case raising the defense of insanity shall, at his arraignment, specially plead "not guilty and not guilty by reason of insanity."

Source: SL 1953, ch 201, §1; SDC Supp 1960, §34.20A01; SDCL, §23-37-1; SL 1978, ch 178, §124; SL 1983, ch 174, §8.