GIs IiiU 49 Consia;In Latest ActionsrinDPP1lt;nSAIGON (AP) — U.S. Marines yesterday created fresh vacancies in enemy ranks in two engagements in northern sectors. Spokesmen said they killed 49.A company of the 26th Marine Regiment wiped out a guerrilla squad by killing 14 and capturing one as the squad tried to flee by raft across a river from the hamlet of Due Ky, 11 milessouthwest of Da Nang. None of the Leathernecks was hit.Anti-SovietChants SlipInto HanoiMOSCOW (AP)—Chinese anti-Soviet demonstrations were reported last night to have spread from Peking and other world capitals to Hanoi.Izvestia said Chinese students and diplomats chanted anti-Soviet slogans in a “provocative demonstration” outside the Russian embassy in the North Vietnamese capital. In a brief dispatch, the government newspaper called it “a hooligan spectacle ”For six days thousands of Chinese have been staging some-;imes riotous demonstrations mtside the Soviet embassy in ^eking, and others have been nstigated in Paris and Bagh-iad, Iraq’s capital. Word of an-Marines of the 7th Regiment, backed by naval guns, field artillery and air strikes, overran a collection of enemy bunkers and entrenchments on the coast 25 miles south of Quang Ngai. They said they killed 35 of the enemy. Their own losses were described as moderate.si4V,cgdnBriefing officers told of other developments afield: —Two regiments of South Korea’s White Horse Infantry Division have killed 71 Viet-cong and captured 129 weapons in a new operation, called White Horse 1, launched Sunday on the central coast, 15 miles northwest of Nha Trang. A spokesman said that at the time of this accounting the Koreans had suffered no casualties.rc*c0t:ycc—Five-inch shells from guns of the U.S. destroyer Keppler sank five Communist cargo barges and damaged 10 from a fleet of 20 sighted off Dong Hoi 40 miles north of the border. The shelling was part of a con tinuing effort by 7th Fleet warships to intercept North Vietnamese supply vessels before they reach Communist forces in thesouth.