OMOTOTUS. 217 



narrow transverse smooth depression, extending from which, as far 

 as the hase of the antennae, is a minute medial carination : eyes pro- 

 minent, globose, extending laterally as far as the anterior angles of 

 the thorax ; between the eyes is a medial longitudinal fovea, which 

 reaches (at its upper extremity) an almost imperceptible transverse 

 depression ; at the base of the head the surface is rufo-flavous ; 

 clothed throughout with flavous pubescence. Thorax transverse 

 (almost quadrate), rectangular ; the sides are marginatc, and the line 

 of the base subsinuate ; at the antemedial portion of the disk the 

 surface is prominently raised, being divided into two oblong eleva- 

 tions by a broad longitudinal anterior depression ; the base is com- 

 paratively depressed, more distinctly at the postical angles ; the sur- 

 face is clothed throughout with a rich fulvous pubescence. Scutellum 

 triangular, pubescent. Elytra considerably broader than the thorax, 

 subparallel, punctate-striate, the punctures being quite concealed by 

 thick pubescence ; the surface near the scutellum is distinctly gib- 

 bous ; the colour of the pubescence is very varied : near the margi- 

 natum and at the base it is rufous, rufo-ferrugineous being the prin- 

 cipal colour ; near the suture (between the second and third striae) 

 there are three distinct but small markings of ashy- white colour ; 

 between these the surface is principally dark fuscous. Antenna; 

 subincrassated gradually towards the apex ; the first joint being 

 broad, but elongated ; the second short and ovate ; the third and 

 fourth attenuated, of equal length with the first ; the fifth to eighth 

 shorter and more dilated; the ninth to eleventh broader, and not 

 longer, than the second ; in colour, the joints first to fomth and 

 seventh and eighth are flavo-testaceous, the fifth, sixth, and ninth to 

 eleventh are darkly fuscous. Legs robust ; the anterior flavous, the 

 tarsi and apex of the tibiae being suffused with fuscous (the posterior 

 legs in the example before me are wanting). 



This species differs from 0. fidvo-pubescsns in the colouring of its 

 antennae, in the less deeply-marked striae on the elytra, and in its 

 more close as well as differently marked pubescence. 



Cayenne. In the collection of M. Deyrolle. 



9. Omototus fulvo-pubescens, 



0. oblongo-ovatus, latus, robustus, punctato-striatus, fulvo-pubes- 

 cens ; capite brevi, flavo-pubescenti, ad apicem rufo, ad basin 

 fusco; ikorace transverso, rectangulari, lateribus subsinvatis, 

 a itt ice elevato, bitubercidato ; elytris latis, robustis, subparallel is, 

 punctato-striatis, ad basin elevatis, flavo-fusco, fulvo- et tcstaceo- 

 (irregulariter) pubescentibus ; antennis incrassatis, art. 1-8 fla- 



