1 The Cane Grubs of Australia. 



(2) Venter of abdomen at apex with a narrow elliptical path, open posteriorly, and 



bounded on either side bj^ a row of aVjout fourteen short stout black setae 



= Cetonid sp. No. 46. 



Venter of abdomen at apex with a naked elliptical central space without special 

 delimiting setae . . . • • • • • • • = Cacachroa decorticata. 



(3) Latero-cervical shield reaching farther ventrally than thoracic peritreme ; apex 



of abdomen ventrad always with a naked path bounded by definite setae, 

 or with a definite formation of setae ; head always smooth or practically so ; 

 mandibles always without a small tooth jvist laterad of the retinaculum = (4). 

 Latero-cervical shield not reaching farther ventrally than thoracic peritreme ; 

 apex of abdomen ventrad without a naked path bounded by definite setae 

 (except in one instance) ; head sometimes smooth, sonmetimes strongly punctate 

 or transversely \\Tinkled ; mandibles sonietimes with a small tooth just laterad 

 of the retinacvilum . . . . ■ . • • • • ■ • • ■ = (14). 



(4) Anal orifice forming a straight, or nearly straight, transverse slit, without a 



channel joining it at meson from venter ; size medium to very large (in a 

 single case small but the stage of the larva is not known) .. .. =(5). 



Anal orifice triangular, the apex posteriorly, with a median channel joining its 

 apex from the venter ; size very small to inedium-small . . . . = (9). 



(5) Anal path with one convex row of delimiting setae ; size medium . . = (6). 

 Anal path with one .straight row of delimiting setae ; size variable . . = (7). 

 Anal path with three or four rows of delimiting setaj ; size medivim large = (8). 



(6) Seta? bomiding anal path about twelve on either side, these not dense or dark, 



meeting or nearly meeting across the path . . . . = Lepidiota rothei. 



SetiB boiinding anal path twenty on either side, these dense and dark, plainly not 

 meeting across the path .. .. .. = Lej/jirf/oto- sp. No. 215. 



(7) Size very large ; width of head 12 mm. ; epicranial sclerite finely densely rugose 



or coriaceotis ; anal path rather short, with abo\it fourteen setae on either 

 side, these meeting across the path . . . . . . = Lepidiota sp. No. 45. 



Size medium large ; width of head 6 mm. ; clypeiis and adjacent portion of epi- 

 cranial sclerite fuiely rugose ; anal path with abotit thirty-six setae on either 

 side, these stouter, adjacent, and darker . . . . = Lepidiota sp. No. 615. 



Size large ; width of head 9 mm. ; clypeus and epicranial sclerite finely alutaceous ; 

 anal path with about twenty-six setae on either side, these shorter, not adjacent, 

 and less dark . . - . • . • . • . . . = Lepidiota albohirta. 



Resembling Stage I. albohirta but the anterior margin of the epicranial sclerite 

 has a row of fine setae ; setae delimiting anal path not very fine and small 



= Lepidiota sp. No. 10. 



(8) Delimiting area of setae of anal path rather kite-shaped, prolonged anteriorly, 



with one of its rows produced anteriorly as far as apex of scattered setae 

 abovit it ; setae inside epicranial sclerite (not including those along anterior 

 margin) 8-14 on either side ; width of head, 7-5 mm. = Lepidiota sp. No. 683. 



Delimiting area of setae of anal path not kite-shaped, nearly ovate, not produced 

 anteriorly as far as apex of scattered setae abovit it, with about fifty seta; on 

 either side ; setae inside epicranial sclerite (not including those along anterior 

 margin) 6-9 on either side ; width of head, 6-5 mm. = Lepidiota frenchi. 



Delimiting area of setae of anal path shaped as in frenchi, with about forty setae 

 on either side ; the margins of the naked path quite straight ; setae inside 

 epicranial sclerite (not including those along anterior margin) 4-5 on either 

 side; width of head, 7.5 mm. . . . . . . . . = Lepidiota caudata. 



Delimiting area of setae of anal path as in caudald, but the margins of the naked 

 path distinctly convex ; setae inside epicranial sclerite (not including those 

 along anterior margin) two on either siae ; width of head, 6 mm. 



= Lepidiota sp. No. 666. 



(9) Apex of abdomen ventrad with a fiat curved transverse bow of seta, with a 



naked path distad of it . . . . . . . . . . . . . . = (10). 



Apex of abdomen ventrad with a V-shaped row of setae, the apex proximad. 



