natural, history

Elytra shining metallic green; base and suture, particularly at base, narrowlypurplish; elongate, twice as long as wide, almost parallel for three-quarters of theirlength, thence evenly rounded to apex which is acute; very coarsely and deeplyseriate-punctate, these punctures becoming more elongate laterally and evanescentapically; interstices very finely and diffusely punctate to almost impunctate, flat onthe disc and becoming more C0l.lvex to the sides where they are strongly convex.Ventrally shining black; prosternal process lanceolate with two elongate furrowsbetween which it is depressed and flat; mesosternum deeply impressed to take prosternaI process, on each side of which is a sharp angular prominence; metasternumfinely and diffusely punctate; 1 st abdominal segment more strongly punctate, thefollowing segments becoming progressively more finely punctate. Legs piceus, tarsilighter, the apical segment as long as the preceeding united.Length 10 mm, width 4 mm.Holotype: Hutuna, Rennell Island, 16. XI. 53 (J. D. BRADLEY) (Brit. Exp.).Para types: 2 specimens from type locality, 20. xi. 53, and 26-28. xi. 53, (Brit. Exp.).This species runs down to C. profundepunctata Kaszab in his key (1955, Proc.Hawaiian Ent. Soc., 15 (3): 499) which species has not been seen by the writer. Thepresent insect is distinguished by its larger size, the almost impunctate lateral interstices,the finely punctate pronotum which almost twice as wide as long and theshorter rufo-brunneous antennae.PIatydema tricuspis Mots.(1873, Bull. Mosc. XLVI: 479)Two examples, Hutuna, 29-31. IX. 53 (Brit. Exp.).Thesilea puncticeps Fairm.(1881, Ann. Soc. Ent. Fr. (6), I: 281)A single example, Niupani. 22. XI. 53 (Brit. Exp.).Amarygmus morio s. sp. cuprells Guer.(1830, Voy. Coqu. II: 102)Two examples, both from Hutuna, 20. XI. 53 (Brit. Exp).(The illustrations of the new species are placed at the end of the following paper­No. 22).119