The Type Specimens of the Odonata in the Entomological Institute, Hokkaido University Author Syoziro Asahina text Insecta matsumurana 1961 24 57 65 journal article http://doi.org/10.5281/zenodo.3516659 2ba41a83-aa08-498a-8d7c-3a5c3debfa99 3516659 23. Chlorogomphus brunneus brunneus Oguma, 1926 Chlorogomphus brunneus Oguma, 1926 , p. 87, “'Formosa”, ♀ . When I examined the type material in 1935 there were three female specimens: 1♀ Formosa; 1 ♀ Okinawa, 17. V. 1912 ; 1 ♀ Okinawa, Sakaguchi. Judging from Oguma’s description (1926) which is apparently based on a single specimen his type seems to be the last one, this assumption can also be proved by the figures of the measurements of the specimen. But here is a big discrepancy that Oguma stated the locality of it to be “Formosa (Uchida)”. The Formosan specimen, one of the three and the first one as noted above, very unfortunately does not belong to true brunneus but to risi Chen (1950) . However I decided to fix the lectotype upon the Okinawa-Sakaguchi specimen.