It was held in
Commonwealth
v.
King,
In the present case — which we present in outline form — the amended complaint, for trial at a jury-of-six session, followed the King case in charging in a single paragraph indecent assault and battery on a person under fourteen years, committed at divers times between July 28, 1984, and October 1, 1984.* 2 The defendant demanded and was furnished a bill of particulars, and we may take it that the bill, read together with the substance of the Commonwealth’s, evidence at trial, pictured criminal episodes that occurred on three separate dates between the dates mentioned in the amended complaint. 3 There was proof as to each of the three occurrences sufficient to go to the jury. The judge instructed the jury that they must act unanimously, but he did not state in terms that, to convict, all six jurors must find for the Commonwealth as to one or more of the occurrences; that it would not be enough, say, that three jurors were satisfied that the crime was committed on one occasion, while the other three were satisfied as to another occasion, without a convergence of the six jurors on either one. 4 At trial the defendant did not object to the instructions as given, or suggest any addition, but on this appeal he argues that the omission of a specific instruction was error which compels reversal of the judgment of conviction of the sexual offense. 5
*172
It is suggested sometimes that a jury using robust intuition and good common sense will understand and act on the understanding that a general instruction about unanimity implicitly calls for the more specific unanimity. See
Vitello
v.
United States,
Even if the omission in these circumstances to provide an instruction with the nicer elucidation may be regarded as an error, it cannot be counted a “plain error” under Fed.R. Crim.P. 52(b), that is, an error so serious as to call for overturning a conviction.
7
See
United States
v.
Mangieri, supra
at 1280-1281 ;
8
United States
v.
Peterson, supra
at 68. Our criminal
*173
rules have no category of “plain error.” For us the cogent consideration would be that posed in
Commonwealth
v.
Freeman,
Problems of general instructions on unanimity may be avoided by charging the particular occurrences in separate counts where that is feasible. Otherwise the instructions can readily be framed in ordinary cases to define precisely the meaning of unanimity.
We are not drawn into the rarer question how far, in connection with certain crimes and certain arrays of facts, the jurors may individually find slightly differing facts and yet concur sufficiently in their findings to support a conviction. See
United States
v.
Gipson,
Judgments affirmed.
Notes
Section 34, as appearing in St. 1979, c. 344, § 34, reads: “An indictment shall not be dismissed or be considered defective or insufficient if it is *171 sufficient to enable the defendant to understand the charge and to prepare his defense; nor shall it be considered defective or insufficient for lack of any description or information which might be obtained by requiring a bill of particulars.”
The amended complaint does not appear of record, but can be reconstructed from the judge’s instructions and a notation on the original complaint.
The evidence centered upon events on July 28, August 4, and August 17,1984. There is no claim of impermissible variance from the particularized charges. See G. L. c. 277, § 35.
The Commonwealth agrees with the defendant that the convergence of all six on at least one occurrence is what is meant here by a unanimous verdict.
The defendant was also convicted of the illegal possession of a firearm on a particular day. He makes no argument for reversal.
Authority exists that a general instruction may suffice even where a specific instruction has been duly demanded. See United States v. Natelli, 527F.2d311,324-325 (2dCir. 1975), cert, denied, 425U.S. 934(1976).
See 3A Wright, Federal Practice and Procedure § 856 (1982).
Judge Wald in
Mangieri
(at 1281) notes that the local District of Columbia Court of Appeals may be taking a more drastic view. On that point, see
Johnson
v.
United States,
See the characterization of the
Gipson
problem in
United States
v.
Peterson,
