by Damoetas » Tue Feb 09, 2010 4:32 pm
That sounds good. As you know, you have basically three ways of expressing prohibitions in Latin (as described in e.g. Allen & Greenough, 450):
1) noli + infinitive.
2) cave + present subjunctive.
3) ne + perfect subjunctive.
The first is most formal; "the third, though not discourteous, is usually less formal and more peremptory than the others" (A&G).
Your version is "more peremptory," which is probably what you want. It does mark the addressee as male (because of locutus). If you want to leave it applicable to either gender, you could use cave mihi loquaris (option 2 above), or make it masculine plural (ne mihi locuti sitis) which could include both groups.
EDIT: PS: In your original message you must have accidentally typed "ne + present subjunctive for the negative command," because you actually used the perfect subjunctive (which is correct).
Dic mihi, Damoeta, 'cuium pecus' anne Latinum?