362 H. W. BATES 



that characterized by "Sulci frontales breves, extus arcuati;" 

 the section of which A. chalceolus forms part, being "Sulci 

 frontales posterius sinuato-producti, " Individuals, in fact, occur 

 in which the sulci are extremely fine and undecided in the 

 little curve which forms their posterior termination; this curve 

 is sometimes short or long in examples which seem to belong 

 to the same species, and I believe that A. politulus consists of 

 individuals where it is very short or obscure. 



246. Abacetus antepunctatus, n. sp. 



A. chalceolo (Chaud.) affinis, sed differt thorace basi magis 

 angustato, pedibusque llavis femoribus tantum subtus macula 

 elongata nigro-aenea. Convexus, aeneus, capite thoraceque sub- 

 viridi-aeneis , antennis fuscis, articulis 1-3 palpis » pedibusque 

 ferrugineis, femoribus subtus nigro-aeneo plagiatis. Sulci fron- 

 tales postico usque post oculos continuati. Thorax valde rotun- 

 datus , postico magis quam antico et sinuatim angustatus, angulis 

 posticis rectis, anticis valde declivibus, medio basi grosse-punctatus 

 baud marginatus, linea dorsali versus basin latius impressa. Elytra 

 convexa, striata, striis apicem versus tenuiores, puncto dorsali 

 longe ante medium sito. Venter anguste rufo-marginatus. — 

 Long, 5 Y2 millim. 9 . 



Teinzò; Kathà. Two examples. 



247. Abacetus quadriguttatus , Chaud., Bull. Mosc, 1869, I, 

 p. 387. 



Kawkareet (Tenasserim). 



The frontal sulci in this elegant and distinct species are not 

 very distinctly prolonged behind, although Chaudoir placed it 

 in the section having this character ; they are deeply and broadly 

 impressed and angulated, but turned towards the inner margin 

 of the eyes, the curve at their termination, instead of continuing 

 to the eyes becoming straight and passing the anterior supra 

 orbital pore. In A. lophoides (Bates, Ann. Soc. Ent. Fr., 1889, 

 p. 277) from Cambodia, which is scarcely more than a local 

 variety oi A. quadì-iguttatus, having 2 instead of 3 apical antennal 



