364 H. W. BATES 



Metabacetus, nov. gen. 



Gen. Ahaceto valde affinis, sed differt in primis antennarum 

 articulo 2.""^° cum 1.™° regulariter articulate. Mentum sicut in 

 Ahacetis parum profunda emarginatum, dentatum, sed lo bis baud 

 late divaricatis. Thorax sine sulculis marginalibus. Presternum 

 marginatum. Metasterni episternis subelongatis. Venter haud 

 transversim sulcatus. 



The genus is closely allied to Pedmnorphus^ Chaud. 



254. Metabacetus immarginatus , n. sp. 



Latius oblongo-ovatus , niger nitidus, elytris opalescentibus , 

 palpis antennis pedibusque rufo-testaceis. Sulci frontales tenues, 

 recti, obliqui, ultra porum supraorbitalem anteriorem haud pro- 

 longatum. Thorax paullo transversus, antice rotundatus, postico 

 mediocriter subrecte angustatus, ante angulos posticos subrectos 

 paullulum sinuatus ; margine rellexo laterali tenui , sulculis 

 marginalibus laterali et basali omnino obsoletis , sulcis basalibus 

 utrinque brevibus marginem haud attingentibus, linea impressa 

 dorsali tenui longe ante basin terminata. Elytra breviter oblongo- 

 ovata, convexa, fortiter usque ad apicem striata, striis crenulatis, 

 puncto dorsali nullo. Tarsi postici extus tantum sulculati; an- 

 tici d^ articulis 3 triangularibus angulis rotundatis. — Long. 



6 ^2 milling- 



Karin Gheba, alt. 1300-1400 m. 



255. Holconotus ferrugineus, Ghaud., Bull. Mosc, 1869, I, 

 p. 400 {Ahacetus, id.); Schmidt-Goeb., Faun. Birm., t. II, f. 6; 

 Ghaud., Rev. and Mag. Zool., 1876, p. 24 {Holconotus, id.). 



Rangoon; Kathà ; Mandalay; Bhamò; Palon (Pegu). 

 A widely-distributed insect in Indo-China, Madras, Siam and 

 Gambodia. 



