12 MONOPLAl 



mimdis, marginato, ad basin distincte foveolato ; elytris medio- 

 cribus, parallelis, subdepressis, ad basin apud humeros, etiam 

 prope scutellum distincte subglobosis ; anU nnisjiliformibu8,fuscis, 

 ad basin rujis vel rufo-jtavis j pedibus flavte ant croceis, tarsis 

 tibiisque anterioribus nigris. 



c? Long. corp. 2\ lin., lat. 1^ lin. 



2 Long. corp. 3f-3| lin., lat. 1£-1£ lin. 



Oblong-ovate, slightly depressed, subparallel, impnbescent, pale 

 yellow, sliining. Head short, small, transverse, not produced in 

 front ; eyes large, globular, and prominent (not extending laterally 

 so far as the humeral angle of the thorax) ; between the eves, and 

 above the insertion of the antenna?, is an obscure longitudinal de- 

 pression ; surface impunctate, testaceous, somewhat clouded with fus- 

 cous, glabrous. Thorax transverse, rectangular, in front distinctly 

 emarginate ; the anterior angles depressed, but subacute ; the sides 

 marginate ; at the base is a narrow transverse thread-like fovea, 

 which is deflected abruptly into the margin of the base before it 

 reaches the humeral angles ; surface impunctate, of the same colour 

 as the head, shining. Scutellum triangular, impunctate, flavous. 

 Elytra parallel, subcylindrical, the sides distinctly marginate; punc- 

 tate-striate ; the surface near the Bcutellary angles slightly gibbous, 

 croceous (in different examples the shade of yellow varies; in some 

 it has the depth of eolovu' of the yellow band of Trichius fasciatus, 

 while in others it is almost pale flavous). Ant, nna filiform, of the 

 length of the elytra ; the first joint large, inflected outwards and 

 dilated at the base ; the rest as in the adjoining species ; the first to 

 the fourth rufo-ferruginous, the rest fuscous. Legs flavous or cro- 

 ceous, with the tarsi and (more or less) the anterior tibia? black. 



Var. A. Head and thorax rufous; elytra flavous, irrorated (espe- 

 cially towards the apex) with black; antenna rufous, with the fifth 

 to the eleventh joints fuscous ; legs rufous, the tarsi and anterior 

 tibia? being black. 



The above description of the insect was taken from a male ; that 

 of the variety from a female. The different sexes of this species have 

 the same characteristics that obtain among its congeners. The males 

 are smaller, less robust, more depressed ; the head is smaller, while the 

 eyes are larger and more promim nt ; the legs have slightly, in reality 

 (as well as when contrasted with the different size of the bodies), a 

 longer development; and the antennos arc very apparently more 

 produced. 



This species is evidently subject to great variation in the shades 

 of its colouring ; in the examples before me, no two specimens abso- 

 lutely agree in every point. It is at oner separated ir om jucundus, 



