Three modifications to standard sea scallop dredges were tested to determine their effects on incidental catches of commercial finfishes. The modified dredges were compared to standard dredges at 140 stations of paired tows during 6 trips to Georges Bank. Catch data were recorded for scallops, yellowtail flounder, "other flatfish," monkfish, skates, cod and "other fish."  Results were evaluated with t-tests of paired comparisons and indicate that an eight inch square mesh twine top significantly reduces the catch of flatfish and cod.  Square root transformations of catch data did not yield statistical results inherently superior to those of untransformed data. An economic evaluation of the impact on fishermen of excluding finfish from scallop dredges was conducted. The analysis revealed that the proposed modification will have no direct impact on fishing vessel income.