BY ARTHUR M. LEA. 523 



Intermediate tibite bidentate externally.... Neozeneude8. 

 Intermediate tibitB (except at apex) normal Therebus. 



Eyes coarsely faceted Pseudotiierebus. 



Receptacle with parallel sides Therebiosoma. 



Mesosternal receptacle cavernons:. 



Walls of pectoral canal dentate in front Oreda. 



Walls simple. 



Pectoral canal terminated between four anterior 



coxa3 Psepholacipus. 



Pectoral canal terminated almost at metasternum Derbyia. 



Genus Psepholax, White. 



Voy. Ereb. & Terr., Ins. p. 15; Lacordaire, Gen. Col. vii. 

 p. 72; Pascoe, Journ. Linn. Soc. Zool. xi. 1872, p. 481; Broun, 

 Man. N.Z. Col. p. 478. 



Pteroplectus, Sclionherr, Mant. 8ec. p. 50 (sp. inedit. ). 



Head large, not at all concealed by prothorax ; forehead flat. 

 Ei/es ovate, finely faceted, distant. Bostrum short, wide. Man- 

 dibles large, stout, feebly dentate internally. Antennce moderatelj-^ 

 stout ; scape inserted nearer apex than base of rostrum, the 

 length of funicle; two basal joints of funicle slightly longer than 

 wide, the others transverse: club ovate, the length of four or five 

 preceding joints. Prothorax convex, narrowed in front, apex 

 scarcely produced and slightly emarginate in middle; sides rounded, 

 strongly in front of middle, feebly to base; ocular lobes obtuse. 

 ScuieUum moderately large. Elytra convex, subcordate, closely 

 applied to and slightly or not all wider than prothorax, sides 

 decreasing with a moi-e or less rounded outUne to apex. Pectoral- 

 canal wide, shallow, walls rounded in front and not at all pre- 

 cipitous or ridge-like, emargination widely transverse. Mesostei-nal 

 receptacle not excavated, either flat or slightly convex, slighth' 

 rounded behind. Metasternum large, slightly shorter than basal 

 segment of abdomen ; episterna very large. Abdomen large, 

 sutures distinct, segments of variable size. Femora variable; 

 posterior coxie strongly transverse, almost touching elytra; tibia; 

 compressed, curved, in addition to the terminal hook with a small 



