28 Longicornia Malayana. 



Prothorax unarmed at the sides — continued. 

 Antennae tliickened, more or less linear. 



Antenna) fusiform (intermediate joints 



enlarged) Ebmdes, n. g< 



Antennae not fusiform. 



Prothorax contracted at the base . .Egesina, n. g. 

 Prothorax of nearly equal breadth 

 throughout. 



Scape subcylindrical Enisjoia, n. §. ^ 



Scape elongato-pyriform Dyemus, n. g. 



Scape very long j eyes divided Oloessa, n. g. 



EXOCENTRUS. 



Exocentrus, Mulsant, Coleopt. de France, Longic. p. 152, 



Caput antice transversum. Oculi mediocres vel majusculi, 

 vertice vel distantes vel subapproximati. Antennce validce, 

 setosae, corpore vix longiores, articulis tertio quartoque plus 

 niinusve aequalibus et scapobrevioribus, sequentibus gradatim 

 decrescentibus. Prothorax transversus, vel latitudine longi- 

 tudine equalis, spina laterali saepissime post medium sita, 

 margine postico antice angustiore. Elytra oblonga vel sub- 

 ovata, apice rotundata. Femora subclavata. Ta7-si postici 

 modice elongati. Corpus setosum. 



The differences between the two common European forms of 

 this genus (E. bcdteatus and E. adspcrsiis) render it difficult to 

 draw up a very decided diagnosis of it, yet at the same time no 

 one doubts that they are congeneric. The species described 

 below, except E. mcerens, in the form of the prothorax are most 

 allied to E. adspersus. I have formed a section apart of 

 E. mcerens, as the small prothorax, not broader than the head, 

 although transverse as in the others, appears to indicate some- 

 thing beyond a specific difference, but, on the other hand, the 

 prothorax of £. haltcatus seems pretty nearly intermediate. 



Section 1. — Prothorax much broader than long; the spine 

 bent back nearly in a line with the body : — E. hispidulus, 

 Pasc. ; E. ccntcjies, n. s. ; E. lachrymosus, n. s, ; E. 

 ccJimys, n. s. 



Section 2. — Prothorax scarcely broader than long; the spine 

 smaller, directed obliquely backwards : — E. mcerens, n. s. 



