OMOTOTUS. 211 



verse, broader than the head ; the anterior angles are subdepressed ; 

 the sides marginate and, medially, obsoletely dilated or subsinuate 

 in outline ; the surface is uneven and irregular in form, broadly but 

 slightly depressed at the base, and coarsely granulated throughout ; 

 the colour black. Scutellum small and triangular. Elytra broader 

 than the thorax, robust, finely punctate-striate ; when viewed under 

 a high magnifying power, the surface between the striae is finely 

 punctate, and also towards the apex apparently clothed with thick, 

 fine squamose pubescence. Antennae filiform, short, robust, piceous. 

 Legs piceous ; the anterior femora and part of the tibiae flavous. 

 Cayenne. 



3. Omototus tuberculatus. 



0. ovatus, latus, robustus, pubescens, fuliginosus ; capite brevi, inter 

 oculos bituberculato ; thorace quadrato, angulis anticis valde de- 

 pressis, ad apicem bituberculato, ad basin transverse depresso ; 

 elytris latis, robustis, striato-punctatis, ad medium nigro- aut 

 fusco-, ad apicem irregulariter testaceo-pubescentibus ; antennis 

 ad apicem subincrassatis, art. 1-6 fulvis, 7 et 8 testaceis, 9-11 

 fuscis ; pedibus, tibiis posticis subincurvatis, piceis, tarsis posticis 

 rufo-fuscis. 



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



Ovate, broad, robust, pubescent, fuliginous. Head short, trans- 

 verse, depressed, slightly elongated in front ; eyes moderately large, 

 situate at the base of the head ; above the labrum is a transverse 

 triangular depression with a medial obsolete longitudinal carination : 

 immediately above the insertion of the antennas are two medial 

 abrupt tubercles, while above them (at a somewhat greater distance 

 from each other) are two others, less prominent (almost obsolete) ; 

 these are separated from the basal line by a short medial transverse 

 depression which is divided by a longitudinal carination : the surface 

 is irregularly clothed with flavous pubescence. Thorax quadrate, 

 rectangular ; the anterior angles are much depressed ; the sides mar- 

 ginate : two broad and prominent tubercles occupy the antemedial 

 part of the disk ; between them and the basal line is a transverse 

 broad shallow depression : the surface is flavo-pubescent, especially 

 near the base. Scutellum small, almost obsolete, triangular. Elytra 

 broad, robust, covered with very coarse punctures arranged as striae ; 

 near the scutellary angle the surface (when viewed laterally) is 

 slightly raised, and covered throughout more or less with short 

 scattered pubescence ; at the shoulders this pubescence is hardly ap- 

 parent ; it assumes, medially (towards the margination and at the 

 suture), a fuscous or dark ferrugineous hue, while postmedially are 

 several unconnected small patches of yellowish-white pubescence. 



