32 



than the ninth; 11 narrowly ovate, as long, but more incrassate than the 

 tenth; the last three forming an elongate club; 7-11 furnished with verti- 

 cil late setae. 



'.lary palpi (PL XL, fig. 5, s) rather robust, 4-jointed; 1 long and slender; 

 2 large, pyriform; 3 very large, ovate truncate at the apex; 4 rather short, 

 acicular. 



Labial palpi (PI. XI., fig. 6, mt very short, 3-jointed, all nearly equal in size, 

 subquadrate, transverse, the apical joint furnished at its outer extremity with 

 several very long erect setae. 



Labrum (PI. XI.. fig. 3) large and broad, subquadrate, with the anterior margin 

 minutely denticulate, slightly dilated, and furnished with long sets at the base 

 on each side. 



Mandibles (PI. XL. fig. 1, t) large, rather long, and obtusely hooked at the apex, 

 convex, llattened, and minutely costate at the hack. Lamella membranacea 

 oval. Stipes robust, and produced above into a large strongly curved style. 



Maxilla (PI. XL, fig. 5) very large and very robust, apparently trilobed; exterior 

 lobe robust and broad, very sharply pointed, and strongly constricted near the 

 base; intermediate large and broad, densely furnished with long sets at the 

 apex; interior large and broad, armed with many long, very sharp, curved 

 teeth at the apex. 



Mentum (PI. XL, fig. 6, j) large, oblong, with broad lateral eostae. 



Labium (PI. XL, fig. 6, k) oblong, almost entirely concealed by the mentum, 

 produced on each side of the apex into a short, very acute, divergent para- 

 glossal process. 



Lingua (PL XL, fig. 6, 1) very short and broad, produced and deeply bifid at the apex. 



Pronotum rather small and narrow, rather longer and broader than the head, widest 

 behind the middle, strongly constricted near the base, in the males produced 

 on each side near the middle into an acute tooth variable in size, basal margin 

 straight, with the angles acute and salient. 



Scutellum large, triangular. 



Elytra large and turgidly convex in the males, rather short and truncate in the 

 females. 



Wings lanceolate, narrow, scape long, nerves and marginal setae brown. 



Abdonii a composed of nine segments, the three basal coriaceous, six apical more or 

 less corneous. 



Protkorax (PL XL, fig. 2, a) moderate; prosternum moderate; episterna rather 

 small : epimera moderate, inclosing posteriorly the coxal cavities ; coxal 

 cavities almost circular, not contingent. 



Me80Sternum (PL XL. fig. -2, d) large, much and broadly elevated, and anteriorly 

 and posteriorly acuminate; episterna rather large, suboblong ; epimera large, 

 humeral, broadly extending to the coxal cavities; coxal rarities large, circular, 

 narrowly separated by the carina. 



Meta8ternum (PL XL, fig. 2, g) rather large, widely remote from the sides of the 

 body, posterior margin between the coxa? Btraight ; episterna large and broad, 

 reaching to the coxae ; epimera long, broadly inflected posteriorly, and extending 

 beyond the coxa.; coxa- prominent. 



Venter composed of six segments of nearly equal length, apical segment entire and 

 rather the longest. 



Legs slender, anterior with the trochanters minute, trigonal; femora simple; tibite 



slender, slightly dilated towards the apex, with the inner margin serrate, 



armed at the extremity with small spurs; tarsi three-jointed; 1 and 2 very 



short; 3 very long and very slender; claws slender, slightly curved. 



intermediate like the anterior, but with the tibia? rather longer and faintly 



recurved. 

 posterior (PL XI., fig. 8) with the trochanters claviform; femora simple; tibiae 

 with the inner max - gin very strongly serrate ; tarsi like the anterior. 



