167 



sinus not very deep, not much narrower than each of the 

 lateral ones ; sides with fairly large punctures, but disc almost 

 impunctate. Scutellum almost impunctate. Elytra consider- 

 ably wider than prothorax, posthumeral incurvature moderate, 

 sides of abdomen not concealed from above, suture scarcely 

 mucronate at apex. Pygidium obtusely pointed, and densely, 

 concentrically strigose. Abdomen vaguely depressed along 

 the middle. Mesosternal process lightly produced, the tip 

 rounded. Front tibice strongly dentate at apex only, middle 

 pair slightly thickened but not dentate in middle, the hind 

 pair with a dentiform ridge near middle. Length, 15-15-| mm. 



Hub. — Queensland: Coen River (H. Hacker). Type in 

 National Museum, Melbourne, from C. French. 



It is with some hesitation that I describe the two speci- 

 mens before me as representing a new species, rather than 

 a variety of the very variable obliquata. They differ, how- 

 ever, from males of that species in having the upper-surface 

 opaque instead of shining (but one specimen has parts of the 

 upper-surf ace shining), the abdomen entirely black except for 

 some marginal spots, and the legs paler. The pale portions 

 of each elytron also are all connected together, instead of 

 being isolated from each other into two or three parts. On 

 the type the prothoracic blotch has a triangular notch at its 

 apex, on the other the notch is continued almost to a trans- 

 verse subbasal pale space. On each elytron of the type there 

 is a somewhat dumb-bell-shaped oblique vitta from the 

 shoulder to beyond the middle, almost connected with the 

 side but distinctly separated from the suture ; near the apex 

 there is .a large spot, rounded behind and with a pointed 

 projection in front; adjoining the scutellum there is a large 

 spot, and there is a narrow black mark on the hind portion 

 of the suture. On the second specimen the discal markings 

 on each elytron are connected together, and a 1 so connected 

 with each other by way of the postmedian sutural mark which 

 is larger than on the type. On the type there are four dis- 

 connected spots on the pygidium, on the other there are but 

 two. The upper-surface is covered with an opaque indumen- 

 tum, which partially or entirely conceals the punctures. On 

 the elytra there appear to be feeble rows of shallow punctures, 

 but where the indumentum has been rubbed away these be- 

 come much more distinct. 



Ablacopus trapezifer, Thorns. 



PI. x., fig. 71; pi. xii., figs. 126 to 131; pi. xiii., 

 figs. 154, 155, 156, 165, 166, 167. 

 This species is fairly common in Northern Queensland, 

 and varies in length from 17 to 25 mm. The prothoracic 



