Roger Stevens of the Kennedy Center, left, talks with Rep. Peter N. Kyros, right, and former wife Alice in Washington, D.C. on January 20, 1972. (Frank Johnston/THE WASHINGTON POST)

Peter N. Kyros, a Maine Democrat who represented Portland in the U.S. House of Representatives for four terms and became a consultant and lawyer in Washington, died July 10 at George Washington University Hospital. He died a day before his 87th birthday.

He had respiratory failure, said his son-in-law, Thomas Schaufelberger.

Mr. Kyros was a lawyer in private practice in Portland before serving in the House from 1967 to 1975.

In Congress, he served on the old House Interstate and Foreign Commerce Committee and the old Merchant Marine and Fisheries Committee. He helped oversee legislation involving conservation and wildlife protection, and promoted the passage of a law establishing a 200-mile offshore commercial fishing boundary.

He lost his seat in 1974 to David F. Emery (R) by less than 1 percent of the vote. Afterward, Mr. Kyros served as a State Department liaison to Congress on shipping issues in the early 1980s and was a consultant and lawyer in private practice.

The son of Greek immigrants, Peter Nicholas Kyros was born July 11, 1925, in Portland.

Mr. Kyros was a 1947 graduate of the U.S. Naval Academy in Annapolis and served as an officer aboard destroyers until his discharge in 1954.

He was a 1957 graduate of Harvard Law School and was active with the Democratic Party in Maine before his election to Congress.

His first marriage, to Alice Williams, ended in divorce. Their son, Peter N. Kyros Jr., died in 2003.

Survivors include his wife of 27 years, Susan Gramlich Kyros of Chevy Chase; a daughter from his first marriage, Joanne Carol Kyros of Chevy Chase; and five grandchildren.