PORT HARCOURT, Nigeria, Feb 8 (Reuters) - Gunmen kidnapped a Filipino woman on Wednesday in a busy street in the Nigerian oil city of Port Harcourt in the anarchic Niger Delta, police said on Thursday. A police spokeswoman said the gunmen snatched the woman in the afternoon as she was walking between her car and a bank. The abduction brings to 30 the number of foreigners being held by different armed groups in the oil-producing delta.