ALLOCHROMA. 



193 



punctate. Thorax transverse ; the anterior angles depressed ; the 

 sides marginate ; the surface is punctate, more distinctly at the base : 

 a postmedial transverse depression (which does not reach the basal 

 line) extends to the margination ; in this depression are two con- 

 tiguous circular spots. Scutellum sufficiently large, triangular, fus- 

 cous. Elytra tolerably robust, coarsely punctate-striate ; in the 

 centre of the antemedial, and also of the postmedial part of the 

 elytra (between the second and the sixth striae) is a large insulated 

 black macula (that nearer to the shoulders subcircular, that at the 

 apex oval or -elongate). Antennae robust, short, incrassated towards 

 the base, fuscous, with the sixth to the ninth joints back. Legs ro- 

 bust, ferrugineous. 



Brazil. 



A. festivum differs from all other species, except the preceding, in 

 its four distinct markings on the elytra. 



14. Allochroma sex-signatum. (TAB. VIII. fig. 2.) 



A. ovatum, robustum, flavum ; capite depresso, antice Tiaud attenu- 

 ato, inter oculos in forma literce T foveolato, impunctato (ad ba- 

 sin punctis minutis notato), rufo ; ihorace transverse, rectangu- 

 lari, angulis distinctis marginatis, flavis ; elytris punctis veluti 

 in striis dispositis, flavis, ad basin rufo suffusis ; maculis sex 

 nlgris, ad humeros duce, ad scutellum duce circulares, duceque 

 post medium transversce ; antennis robustis, subincrassatis ; pe- 

 dibus flavis, tarsis anterioribus (tibiisque superne visis) fuscis. 



Long. corp. 2-J lin., lat. 1 J lin. 



Ovate, robust, flavous. Head large, very slightly produced, de- 

 pressed ; eyes tolerably large, but not extending laterally to the line 

 of the anterior angles of the thorax ; between the eyes is a very 

 distinct T-shaped fovea, the longitudinal line of which is extended 

 obsoletely upwards towards the base ; the surface of the head is im- 

 punctate (with a few scattered minute punctures at the base) and 

 rufous. Thorax transverse, rectangular, slightly compressed towards 

 the base ; the anterior angles are prominent and subacute ; the sides 

 distinctly marginate ; the posterior angles distinct ; the surface is 

 equate (without any depressions), impunctate, and in colour flavous. 

 Scutellum distinct, triangular, large, impunctate, flavous. Elytra 

 broad, robust, with rows of large and shallow striae-like punctures ; 

 a slight and broad depression extends transversely, a little in front of 

 the middle ; the surface is flavous ; the apex is broadly suffused with 

 rufous; six large black spots are distributed on the surface: one, 

 on either side, at the humeral angle, a second (larger and circular) 

 near the scutellum, and the third (larger still and transverse) post- 



