COLEOPTERA. 
57 
Pxychoder.es mixtus, Jekel. 
Parum elongatus , pro ratione generis convexus , subparallelus , niger , 
tomento infra albido sericeo , supra disco fulvo brunneo variegate , 
lateribus fuseo tectus ; maculis signaturisque ordinariis disci f uscis ; 
capite transverso, pone oculos baud exserto ; rostro breviusculo , $ 
disco carinis tribus latis elevatis , J obsoletioribus inslructo ; thorace 
latiusculo , longitudine paullo angustiore , lateribus obtuse lateque 
rotundato , disci medio biimpresso , area depressionem mediam circum- 
girente intra-laterali , elevata , transversim rugulosa (preesertim in $), 
carina postica medio baud interrupta, basi distante; scutello non 
transverso ; elytris oblongo-parallelis, basi medio anguste marginato- 
elevatis, humeris obliquis , supra anguste leviterque impressis, postice 
oblique sub circular iter declivibus , ca//o ante-apicali brevi,parvo, tuber- 
culiforme , libellam perpendicularem apicis suboblique dejlexi non 
attingente. 
S' Majores: Antennis corpore longioribus , parum crassis, articulis 
cylindricis, apice breviter clavatis, albido-annulatis; clava valde 
elongata , angusta articulo ultimo apice rotundato ; rostro longiore, 
apice parum ampliato, argute trica.rinato. 
$ Tertia parte minores : Antennis apicem elytrorum non at.tingentibus , 
clava elongata. 
? Antennis thoracis medium baud at ting en tibus, funiculo extrorsum 
albescente , clava ablonga,fusca , articulo ultimo ovato-acuto; rostro 
breviore , apice sa£ ampliato, obsoletius tricarinato. 
Longit. (rostr. incl.) 6J—lin. = 14f 5 —18 T | raillim. 
Latit. If—2 lin. = 3 T |—4 T | millim. 
Syn .— Ptych. mixtus, Jekel in litt. (<££)• 
- varicornis, Chevr. in litt. ($ recentior.). 
Patria : Cayenna ; Rio Negro, Dom. Dupont ; Brasilia, Dom. Parzudaki, 
Stevens, &c. 
This species somewhat resembles Pt. callosus in the mixture of colours 
on the disc, and the convexity of the body, but it is smaller, less robust, 
and the colours are not the same; the callosities of its elytra are also 
much shorter, the elytra being convex as well as the body. 
I 
