During June 19-24, 1990, 26 odo- nate spp. were collected from 5 localities. Trithemis donaldsoni is an addition to the fauna of the Arabian Peninsula. Enallagma nigridorsum is a new record for Yemen. The presence of Pseudagrion arabicum in Yemen is confirmed. The South Arabian Pseudagrion sublacteum is found to belong to the nominal subspecies, not to ssp. mortoni.