BY THOiMAS G. SLOANE. 489 



Labrum short, subtruncate (anterior margin lightly bisinuate), 

 quadrisetose (a large setigerous puncture at each lateral angle 

 and a small one on each side of the slightly prominent middle). 



Mandibles with apex wide and deeply emarginate. 



Anfennce slender, filiform ; three basal joints glabrous, basal 

 joint stout, rather long — not as long as two succeeding together, 

 second joint about half the length of third, others equal. 



JSIentum not divided from gulaj at base, concave, deeply 

 emarginate; sinus edentate. 



Palpi : labial with penultimate joint shorter than terminal, 

 cylindrical, bisetose in front, terminal joint swollen, pyi'iforni, 

 truncate at apex, sparsely setose ; maxillary with second joint 

 long, stout, subcylindrical, penultimate shorter than terminal, 

 slender, cylindrical, lightly incrassate, terminal rather stout, 

 oblong-oval. 



Protlwrax subquadrate with sides and angles rounded, widely 

 impressed on each side of base; lateral margins widely explanate 

 posteriorly; posterior marginal puncture on edge a little before 

 basal angle. 



Elytra very wide, apical curve short, widely sinuate on each 

 side; a short stride at base of first interstice. 



Prostermim with intercoxal part narrow, bordered; basal 

 declivity very narrow in middle. 



Mesosternum concave betvreen coxae. 



Melanternurn as long between coxfe as length of posterior coxfe, 

 narrow and pointed between intermediate coxse; episterna much 

 longer than broad. 



Leys (9) long; slender : tarsi setigerous beneath; anterior with 

 joints dilatate, successively shorter, penultimate joint small, 

 cordate. 



Allied to Platylytron from which it differs by the shape of the 

 palpi and mentum, the marginate prosternum, the elytra sinuate 

 on each side of apex, ifcc. 



97. H. LATus, n.sp. 



9. Alate, wide, lightly convex; head small; prothorax small, 

 transverse ; elytra wide, striate, third interstice bipunctate. 

 Black, shining. 



