— 6o— 



Synopses of Cerambycidae. 



By Chas. W. Leng, B. S. 



(Continued from p. 32. ) 



CALLICHROMINI and TRACHYDERINI. 



These two tribes are for convenience considered together. They in- 

 clude all the Longicorns with a triangular scutellum, more or less acute, 

 and varying considerably in size. The species belong almost entirely to 

 the warmer parts of the country. The arrangement of genera is as 



Ibllows: 



Front coxal cavities closed behind Callichroma. 



F"ront coxal cavities open ; 

 Mandibles acute or simple at tip: 



Pronotum broadly lobed at base; poriferous system of antennae very distinct; 



Metasternal pores absent, side pieces very wide Megaderus. 



Metasternal pores distinct 2 



Pronotum not lobed, sometimes subsinuate at base, poriferous system often ob- 

 solete, and palpi in some genera scarcely impressed 3 



Mandibles emarginate at tip 4 



2 Prothorax strongly armed on sides Dendrobias. 



I'rothorax uniformly convex Lissonotus. 



3 Front large, square, perpendicular, al)ruplly separated from the ante-ocular space: 

 .Prosternum vertical behind Stenaspis. 



Prosternum arcuate at tip. 



Elytra distinctly margined at the sides Crioprosopus. 



Elytra not or obtusely margined ; 



Prothorax armed with a Literal spine; niesosternum not protuberant; 



Body pubescent Tragidion . 



Body glabrous, (^ elytra costate Purpuricenus. 



Body glabrous, (-j^ without antennal tubercles Metaleptus. 



Prothorax rounded, convex i^thecerus. 



Front moderate, short, declivous, not abruptly defined each side; 

 Two ivory vittoe on each elytron; prothorax margined at apex; 



Mesosternum declivous Mannophorus. 



One ivory vilta on each elytron; prothorax not margined at apex. 



Mesosternum protuberant Entomosterna. 



Illytra without ivory vittse, mesosternum declivous; 



Body pubescent; prothorax not margined at apex ; Amannus. 



Body pilose; prothorax margined at apex Batyle. 



\ F-lytra without ivory vittse; 



Prothorax with an acute lateral spine; 



Eyes not divided ; pubescence fine Oxoplus. 



Eyes divided; pubescence coarse Schizax. 



I'rothorax rounded on sides, with dorsal callosities ... Tylosis. 



Prothorax rounded on sides, or feebly spinose, without dorsal callosities, pube 



scence long and partly errect Crossidius. 



Prothorax narrowed in front, mesosternum convex Sphsenothecus. 



Each elytron with two ivory vittir, prothorax narrowed in front; 



