131 



1 very large and much recurved ; 2 large, ovate, shorter and less incrassate 

 than 1 ; 3 much shorter and more slender than 2 : 4 and 5 small, transverse ; 

 6 very large and much inerassated ; 7 much smaller than 6, and rather pro- 

 duced on the inner side ; 8-10 large and much inerassated, forming a foliated 

 chib ; 2-6, and the three apical joints furnished with short setfe on the 

 inner side. 



MaxUlar;/ jxilpi (PI. lY., A, fig. 5, w) large, 4-jointed ; 1 rather large, pyriform ; 



2 verj- large, turgidly incrassnte, pyriform, obliquely truncate at the apex ; 



3 very short, transverse ; 4 obtusely conical. 



Labial palpi (PI. IV., A, fig. 6, m) small, short, 3-jointed; 1 very minute; 2 large, 



semioval ; 3 much shorter than 2, subquadrate, furnished with very short 



setjB at the extremity. 

 Lahrum (PI. IV., A, fig. 8) moderate, dilated at the base, slightly emargiuate in front, 



and rounded at the sides. 

 Mandibles (PI. IV., A, fig. 4) moderate, sharply hooked, and armed with many 



curved teeth towards the apex ; the apex itself is trifid, with the points imbri- 

 cated on each other. 

 Maxilla (PL IV., A, fig. o) unilobed, with the lobe long and slender, sharply hooked, 



and armed with many sharp teeth near the apex. 

 Mentiim (PI. IV., A, tig. 6, j) narrow, elongate, anterior margin deeply excavated, 



with the angles i^roduced and acute. 

 Labium (PI. IV., A, lig. 6, k) narrow, oblong, with slender elongate paraglossae on 



the anterior extremity. 

 Lingua (PI. IV., A, fig. 0, 1) small, faintly emargiuate in front, and furnished with 



two short sette at the emargination. 

 Pronutum rather large, abruptly defiexed in front, with the anterior margin entire 



and ovatel}' rounded, hinder angles not produced. 

 Scutellum small, more or less triangular. 

 Eli/tra rather large, entire, generally' acuminate posteriorly. 

 Wings ample, elongate, with the membrane very thin, and furnished with the usual 



neuration. 

 Abdomen composed of seven segments, with the four basal segments coriaceous, 



and the three apical corneous, and abruptly defiexed. 

 Prothorax (PI. IV., A, fig. 2, a) with the prostenium very small, elevated between 



the coxse, and pointed in front and behind ; episterna not perceptible ; epimcra 



moderate ; coxal cavities very large, suboval, open in front and behind ; margin 



of the pronotum very minutely inflexed. 

 Pectus with the mesosternum (PI. IV., A, figs, d and e) short, almost wholly defiexed ; 



episterna humeral, subquadrate ; epimera moderate, extending to the coxal 



cavities ; coxal cavities large, suboval, and rather distant. 

 metasternum (PL IV., A, fig. 2, g) large, transverse, not reaching to the sides of 



the body, posterior margin faintly rounded between the coxte ; episterna long 



and narrow, extending beyond the coxae ; epimera narrow, wholly concealed by 



the elytra. 

 Venter composed of six segments ; 1 long ; 2-4 short, equal to each other in length ; 



5 and 6 longer than the fourth ; apical longer than the preceding and entire ; 



the four basal segments furnished with large inflexed lateral proce.sses. 

 Legs anterior with the coxas large, oval ; trochanters short ; femora moderate, 



simple ; tibiae long, not incurved ; tarsi 4-jointed ; 1 and 2 nearly equal in 



length ; 2 deeply bifid in front ; 3 minute ; 4 elongate and slender ; claws 



moderate, inerassated on the under side of the base. 

 intermediate much shorter than the anterior, with the trochanters oval, tibiae 



slightly dilated towards the apex, and spinose on the outer side ; in other 



respects similar to the anterior. 

 posterior like the intermediate, but longer, with the trochanters elongate and 



claviform. 



