350 Mr. G. C. Champion on the 



elytra in ? furnished with a long, slender, curved hook, or 

 a shorter dentiform process, at the sutural angle (PI. XII. 

 fig. 50). 



Length (excl. head) 7-8, breadth 2§-2^ mm. 



Hab. Borneo, Kuching in Sarawak (/.ii\^. LeMJis: c? ? ), 

 Quop in W. Sarawak (G. S. Bryant: iii., iv. 1914: ? ), 

 Ivina Balu {Mus. Brit. : $ ), Sanga Sanga, Moorjawj, 

 {H. D. Jensen : ? ). 



Two males and five females. The ? found by Mr. Jensen 

 in E. Borneo has a shorter and straighter tooth at the 

 sutural angle than in the other specimens of that sex before 

 me, /. viridipennis, Pic, ? , having the elytra somewhat 

 similarly armed. The Kuching males were not detected 

 at the Museum till after the Plates accompanying this paper 

 had been drawn, and the genital armature therefore has not 

 been dissected for figuring ; the apices of the elytra of ? , 

 however, are shown on the second Plate (PI. XII. fig. 50). 



30. Idgia javana, sp. n. 



S . Very like I. caruleivejiiris and /. uncigera ; nigro- 

 fuscous, the palpi [antennae broken] and prothorax testa- 

 ceous, the legs reddish brown, the head grooved between the 

 eyes, the latter narrowly separated, the elytra less elon- 

 gate, the terminal ventral segment convex, conical, narrow, 

 polished. Genital armature (PI. XII. fig. 26) : lateral lobes 

 broad, spoon-shaped at tip as seen from beneath, narrowed 

 distally as seen in profile ; median lobe drawn out into a long, 

 rather narrow, upwardly curved point. 



Length (excl. head) 6f , breadth 2 mm. 



Hab. Java {Mus. Brit.). 



One male, with genital armature so different from that 

 of /. caruleiventris that a name is required for the Javan 

 insect, which may be referable to /. sumatrensis or its var. 

 /. kanneyieteri *, Pi>,from Sumatra, Java, and Borneo. The 

 only tangible characters given for 1. sumatrensis are the 

 small size (length 9 mm.) and the very narrow, infuscate, 

 non-metallic elytra, the type having a maculate prothorax. 

 It is highly probable that more than one species was included 

 by the author under the latter name. 



31. Idgia maryinata, sp. n. 



Elongate, narrow, and subparallel {S), broader ( ? ), mode- 

 rately shining, finely cinereo-pubescent, and sparsely nigro- 



* 'L'Ecbange,' xxii. p. 43 (1906) ; op. cit. xivi. p. 75 (1910). 



