aiONOPLATTJS. 1 1 



7. Monoplatus bimaculatus. (Tab. I. fig. 3.) 



M. oblongo-ovalis, robustus, impubescens, cervinus, nitidus ; capite 

 brevi, subpunctulato, ad basin leviter nigro-vittato, oculis promi- 

 nulis, liaud exstantibus ; thorace transverso, rectangidari, angulis 

 anterioribus depressis, subacutis, marginato, ad basin transverse 

 foveolato, glabro, nigro-irrorato ; elytris robusUs,punctato-striatis, 

 ad medium maculis duabus circularibus nigris ; antennis jili- 

 formibus, elytris brevioribw, art. secundo et tertio flavis, ceteris 

 fuscis ; pedibus nigro- fuscis, femoribus ad basin Jlavis. 



2 Long. corp. 4 lin., lat. 1| lin. 



Oblong-oval (the female), robust and subcylindrical, of a fawn- 

 colour throughout, impubescent, shining. Bead short, transverse, 

 impunctate (by means of a high power of the microscope fine punc- 

 tures are visible) ; above the base of the antennae, and between the 

 eyes, is an obsolete but distinctly impressed transverse fovea ; obliquely 

 subsinuate, or medially angulated ; at the base is a narrow transverse 

 band or collar of black, extending along the margin from eye to eye: eyes 

 tolerably large, distant ; their outer margin does not reach, laterally, 

 the line of the anterior angle of the thorax. Thorax transverse, rect- 

 angular, anteriorly sw&emarginate ; the anterior angles are subacute 

 and depressed; the sides marginate and slightly arcuate, and the 

 basal angles distinct, but closely contiguous to the elytra ; at the 

 base is a deep and well-defined transverse fovea, not extending to 

 the sides, but abruptly deflected before it reaches the humeral angle, 

 and terminating in the line of the base ; surface somewhat globose, 

 finely punctate, especially at the base, irrorated irregularly through- 

 out with black. Scutellum small, triangular, impunctate, shining. 

 Elytra robust, much broader than the thorax, subcylindrical ; the 

 surface near the scutellar angles turgescent ; punctate- striate, with 

 two circular black spots slightly in front of the middle, and extending 

 laterally from the second to the sixth stria. Antennae filiform, not 

 so long as the elytra ; the first joint long, dilated, and inflected out- 

 wards at the base, black, or dark fuscous ; second short, ovate, flavous ; 

 the third longer than the first, fine, and flavous ; the rest dark fuscous. 

 Legs dark fuscous throughout, the base of the femora being flavous. 



The above description is taken from a female. 



A single specimen of this fine species was captured by Mr. Gray 

 in February 1857 at Petropolis (Organ Mountains, Rio Janeiro). 



8. Monoplatus croceus. B.M. 



M. oblongo-ovalis, croceus, nitidus; capite brevi, minuto, fovea inter 

 oculos obsoleta longitudinali, impunctato, glabro ; oculis magnis, 

 exstantibus ; thorace transverso, rectangulari, angulis anticis pro- 



