Longicornia Malayana. 545 



§ § § Elytra biemarginate, or triapiculate at their apices. 



Tetliionea tridentata. 



T. piceo-brunnea, tibiis tarsisque sensim pallidioribus ; 

 spina intermedia elytrorum elongata. 



Hob. — Batchian. 



Slightly glossy, pale pitchy brown; head finely punc- 

 tured, a slightly impressed line extending from the vertex 

 to the epistome ; prothorax finely punctured, oblong, the 

 apex and base equal in breadth; scutellum rounded 

 behind ; elytra finely punctured, the punctation coarser 

 at the base, and gradually becoming very minute poster- 

 iorly, the apex of each elytron deeply biemarginate, the 

 part between the two emarginations produced into a 

 strong spine ; body beneath, chesnut brown, with a few 

 scattered hairs ; legs gradually paler on the tibiee, the 

 tarsi yellowish-testaceous ; antennae half as long again as 

 the body in the male, slightly pubescent. 



Length 5 lines. 



The form of the maxillary palpi in my unique specimen 

 (a male) is similar to that of T. struuiosa, hence it is 

 very probably characteristic of the genus. 



DiCTAMNIA. 



Caput porrectum, antice breve. Oculi magni, infra 

 sub-approximati. Antennce corpore paulo longiores ; 

 scapo breviusculo, obconico; articulis a tertio ad 

 decimum fere gequalibus; ultimo paulo longiore. 

 Prothorax depressiusculus, utrinque rotundatus, supra 

 rugosus. Elytra elongata, postice gradatim angus- 

 tiora, apicibus truncatis. Pedes validi ; femora hand 

 pedunculata, in medio incrassata ; tarsi fere sequales. 

 Prosternum postice rotundatum ; mesosternum breve, 

 inter coxas elevatum. Corpus sparse pilosum. 



In this genus the femora, although very thick in the 

 middle, are not in any degree pedunculate at the base. 

 The outline of the prothorax is like that of Strongylurus, 

 but the anterior cotyloid cavities are open behind. 



