Trigonops insularis (Boheman), new combination .

Celeuthetes insu.laris Boheman, in Schoenherr's Gen. Spec. Cure. 7 (1): 251, 1843. Male

Celeuthetes spongicollis Fairmaire, Rev. Zool., SOS, 1849. Female. (New synonym.)

Celeuthetes griseus Fairmaire, Rev. Zool., 508, 1849. Male. (New synonym.)

Elytrurus squamatus Rainbow, Austr. Mus., Mem. 3: 92, 1897. Synonymy by Marshall, Roy. Ent. Soc. London, Trans. 87 (3): 69, 1938.

There was considerable difficulty in drawing up the descriptions of the Guam Trigonops because of the variation found between the individuals of some of the species.