COLEOPTERA. 
61 
Ptychoderes obsoletus, Jekel. 
Breviter elongatus , modice convexus , supra parum deplanatus ; piceus , 
tomento infra albido-cinerascenie , supra iu w^a communi ordinaria 
cinereo-albido , lateribus dilute brunneo tectus; maculis Grdinariis 
dilute brunneis; rostro mediocre , &asi angusto , versus apicem rectim 
ampliato, supra carinis tribus latiusculis instructor capite subtrans- 
verso , postice lato , anterius in fronte per oculos conicim angustato , 
convexo; thorace oblongo , lateribus intra apicem subtubulatum 
abrupte ampliatis dein rectim perparum ampliatis , a carina postica 
rectim oblique angustatis , supra ante basin circulariter impresso , cum 
elevatione media transversa supra impressionem rugulosa; scutello 
transverso-quadrato; elytris basi conjunctim emarginatis , margine 
elevato, humeris parum obliquis, latiusculis , obtuse rotundatis , lateri¬ 
bus versus apicem subrectim paullo angustatis , supra hand angusteque 
deplanatisyposterius semicircular iter declivibus, callo ante-apicali 
nullo. 
$ Antennis parum crassis, corpore brevioribus, arliculis cylindricis apice 
parum clavatis, clava valde elongata, angusta , articulo ultimo 
oblongo , apice anguste rotundato-acuto. 
^ Antennis thoracis medium saltern attingentibus , clava breviore , 
oreque , articulo ultimo ovato-subacuto. 
Longit. (rostr. incl.) —7 lin. = 14—17 millim. 
Latit. hum. If—1| lin. = 4—4 T 3 S inillim. 
Patria : Brasilia, Mus. Chevrolat, Saunders et Jekel. 
This species is more convex and less depressed than Pt. antiquus , 
Klug recalling to mind the general shape of Pt. mixtus and virgatus; its 
head is somewhat longer and more narrowed anteriorly by the eyes than 
the former, and less elongate and conic than the latter, to which it is 
nearer allied, in the absence of callosities of the elytra. Its coloration is 
as in pale specimens of Pt. elongatus or antiquus; the body underneath 
darker, of an ashy white hue, and the common band of the disc of the 
elytra and thorax is a little darker ashy white; the sides with the emargi- 
nations of the band of the elytra are of a light brown densely mixed with 
fulvous. The common band is nearly shaped as in the depressed species, 
but it is conically narrowed to the scutellum, more than in any other 
