Rep. Stan Parris (R-Va.) was the wealthiest member of the U.S. House of Representatives from the Washington metropolitan area in 1985, according to financial disclosure forms released yesterday.

His income was between $277,506 and $445,000, and possibly higher, with most of his income coming from securities, real estate and livestock investments. His assets were worth $1.9 million to $3.2 million and possibly more, and liabilities between $245,006 and $605,000, the records showed.

House members, who earned congressional salaries of $74,891 in 1985, must list the exact value of the honoraria they receive, but are not required to list precise values of other income, holdings and liabilities. Instead they must give income ranges, such as $50,001 to $100,000.

Parris also reported that he and his wife Sonia were flown to Taiwan, where they spent six days, with expenses paid for by a group called the ROC-USA Economic Council, a trade group based in Taipei.

D.C. Del. Walter E. Fauntroy listed $51,020 in honoraria, the most that any area House member reported. But Fauntroy deducted some travel expenses and donated $29,837 to charity. He kept $17,862.

House rules limit members to $22,467 in honoraria.

Rep. Beverly B. Byron (D-Md.), a member of the House Armed Services Committee, received $15,500 in honoraria, mainly from defense contractors, including $1,000 each from United Technologies, McDonnell Douglas, Bell Helicopters, Northrop Corp., TRW Inc., Hughes Helicopters and Lockheed Missiles.

Byron also owned 40 shares of Mobil Corp., 36 shares of Westinghouse Corp. and 28 shares of Exxon Corp., with the value of each holding listed at less than $5,000. In addition, she owned rental property in Duck Key, Fla., valued at more than $250,000.

Rep. Steny H. Hoyer (D-Md.) earned $43,432 from his law practice in 1985 but had the second highest total income, listed between $128,434 and $149,432. He earned between $10,002 and $31,000 on rent from a vacation home on Nantucket Island, Mass., valued at over $250,000, and a rental property in Alexandria whose value he listed between $100,001 to $250,000. The Anti-Defamation League of B'nai B'rith paid for round-trip air fare and 10 days of food and lodging for Hoyer and his daughter to visit Israel.

Rep. Frank R. Wolf (R-Va.) reported $6,002 to $18,500 in unearned income from his savings and loan account, property in Centreville and the Franklin Fund.

The American Concrete Pipe Association paid air fare to West Palm Beach, Fla., plus one day food and lodging for Wolf. The Grocery Manufacturers picked up a similar tab for Wolf on a trip to Key Largo, Fla.

Wolf's total income was listed as between $88,102 to $100,600.

Rep. Michael D. Barnes, a Maryland Democrat, got less than $1,000 in rental income from a family farm he valued at between $100,001 and $250,000. He received $19,650 in honoraria for appearances before groups ranging from Connell Rice and Sugar Co., to Oberlin College to IBM executives. He was reimbursed for nine trips, including air fare by the American Hospital Association to attend the inauguration of the governor of Puerto Rico. Barnes' total income was listed as $95,750.

The National Conference on Soviet Jewry paid air fare and expenses for Rep. Barbara Mikulski (D-Md.) to fly to the Soviet Union. Mikulski received $4,000 in honoraria but donated $1,500 to charity. She also received between $1,001 and $10,500 in dividends and interest.

Mikulski also listed herself as vice president of the International Women's Resources Agency Inc., and Iguana, two groups she formed in 1981 with Teresa Mary Brennan, an Australian feminist and former adviser to Mikulski. Mikulski's total income was $77,391.

Earlier in the week, senators released their financial disclosure forms. Sen. Charles McC. Mathias (R-Md.), who is retiring this year, listed $56,769 in income from his farm and other sources, and $25,520 in honoraria. Maryland's other senator, Democrat Paul S. Sarbanes, listed $16,210 in honoraria and no other outside income. He noted that his wife Christine is a teacher at Gilman School in Baltimore. Sen. Paul S. Trible (R-Va.) received $27,800 in honoraria, while Sen. John W. Warner (R-Va.) listed honoraria of $5,000. Warner also received $86,343 from two business partnerships.