142 PENTATOMID^il. 



Division AMYNTAlilA. 



In this division the head is always niodei'atel_y large and trian- 

 gular or subtriaugular ; the lateral lobes longer than the central 

 lobe, meeting beyond it or cleft at their apices. The body is some- 

 what broadly ovate, the width of the pronotum being half or more 

 than half the length of body ; the mesosteruum is carinate, but the 

 abdomen unarmed at base ; the lateral margins of the pronotum 

 are generally distinctly, sometimes only obsoletely, serrate or 

 denticulate. 



Synopsis of Genera. 



I. Head broader between eyes than long. 



A. Lateral margins of the pronotum obso- 



letely serrate Halyabbas, p. 142. 



II. Head as long as broad or longer than broad. 



B. Lateral margins of the pronotum distinctly 



serrate. 



a. Head with the lateral lobes meeting in 



front of central lobe. 



a. Lateral margins of abdomen more or 



less dilated ; eonnexivum exposed. 

 a}. Scutellum as long as wide at base . Belopis, p. 143. 

 b^. Scutellum a little longer than Avide 



at base Amyntok, p. 144. 



b. Head with the lateral lobes longer than 



central lobe, but not meeting in front 

 a-. Head not longer than broad Ocheophaea, p. 146. 



b. Lateral margins of abdomen not di- 



lated nor eonnexivum exposed. 

 b'-. Head considerably longer than 



broad Sennertus, p. 145. 



The genus Paramecus, Fieb., kno\\u only to the writer by 

 description, is included in this division, but cannot be disposed in 

 the synopsis without examination. 



Genus HALYABBAS. 

 Halyabbas, Dist. Tr. E. S. 19C0, p. 164. 



Type, H. nnicolor, Dist, 



Distribution. Burma ; Siam : Lombok ; Hong Kong. 



Body ovate, narrowing to apex, depressed towards head from 

 near base of pronotum ; head large, triangular, almost in a line 

 with lateral margins of pronotum, lateral lobes very broad at base, 

 narrowing towards apex and meeting a little in front of central 

 lobe ; rostrum reaching base of abdomen ; antennae five-jointed, 

 first joint not nearly reaching apex of head ; pronotum about 

 twice as broad as long, lateral margins obliquely straight, very 

 slightly crenulate near eyes, lateral angles obtusely subprominent ; 

 scutellum broad at base, somewhat suddenly narrowed at about 

 one-third before apex, which is rounded and reaches base of 



