BYRRHID/E 67 



remarkable elytral epipleura, which are without even a suggested 

 approximation elsewhere in the entire family. This genus may be 

 described as follows: 



Lioon n. gen. 



Body oviform, convex, subglabrous or with very sparse erect 

 hairs; head nearly as in the preceding tribe, short, the eyes well 

 developed, moderately convex, strongly and densely faceted, rather 

 pointed beneath, the front with a broadly arcuate, even, strongly 

 elevated and acutely beaded edge from eye to eye, the pseudo- 

 epistoma projecting rather inferiorly as a short, transverse, smooth 

 and flat truncate plate, the labrum transverse, deeply sinuate 

 medially at apex. Mandibles broad, strongly arcuate, the apices 

 truncate, very wide and having five acute and subequal teeth 

 arranged in a nearly straight line throughout the entire width. 

 Mouth organs moderate, the fourth maxillary palpal joint slender, 

 gradually finely attenuate and unimpressed. Antennae moderately 

 short, not much compressed, inserted at the extreme sides and 

 front of the head under the strong marginal beading, slender basally, 

 gradually enlarged through the last five joints, the three penulti- 

 mate rather transverse, the last oval, the third not very much 

 shorter than the first two combined, the first smaller than usual 

 in the preceding tribe. Prothorax nearly as in Amphicyrta, trun- 

 cate rectilinearly at base, the sides with an acute edge to the 

 apical angles, \vhich are acute and feebly produced at the eyes 

 from above, the surface very steeply sloping antero-laterally; 

 scutellum moderate, acutely ogival; elytra short, very obtuse,, 

 sparsely punctate, without trace of impressed lines. Prosternum 

 broadly arcuate posteriorly, the end of the notably wide process 

 gently rounded and filling the entire mesosternal emargination, 

 the hypomera very wide, parallel, demarcated anteriorly by a deep 

 open fissure; mesosternum very short between the middle and poste- 

 rior coxae; met-episterna narrow, scarcely distinct. Abdomen 

 rather narrow, with straight distinct sutures and subequal segments; 

 coxae very small, oval, very widely separated, the posterior but 

 little wider than long, not even attaining the very broad epipleura, 

 separated therefrom by half their own width. Legs moderate in 

 length, rather slender, the tibiae unmodified, the tarsi not retractile, 

 slender, rather long, subcylindric, sparsely setulose on the under 



