57. Eurystylus costalis variety unicolor Poppius, Ofv. K. Vet.-Akad. Forh. 53 A(4): 6, 1911.

One specimen, Machanao, Aug. 6, Swezey; one specimen, Yona, May 12, on pigeon pea, Usinger .

The genus Eurystylus Stal (= Eurycyrtits Reuter, Olympiocapsus Kirkaldy, and Paracalocoris Distant part.)) is widespread in Africa and in the Austro-Oriental region. The present specimens will not run to costalis Stal in Poppius' key (Ofv. K. Vet.-Akad. Forh. 53A(4):2, 1911) but agree with his description of the variety ttnicolor . The type locality of the variety is not given, but the species is reported from the Philippines, Sumatra, and Mentawei. The rostrum reaches only to the apices of middle coxae in the Guam specimens and other specific characters might become obvious upon comparison with typical costalis .