COLEOPTERA. 
59 
callosity, the widening of the elytra at the base behind the angles of the 
thorax, the cylindric form of the joints of the antennae in the males, also 
the front not conically narrowed by the eyes, &c., are sufficient to dis¬ 
tinguish it at the first glance: I have seen hut few specimens of it. 
Ptychoderes antiquus, Klug. 
Modice elongatus et deplanatus , niger , tomento infra albido-subcretaceo, 
supra in vitta communi lata irregulari albido-griseo , lateribus dilute 
fusco tectus; maculis signaturisque ordinariis disci dilute fuscis; 
rostro mediocri ; capite pone oculos parurn extenso; thorace latius- 
culo, longitudine paullo angustiore, lateribus apice substrangulatis , 
dein versus carinam posticam subreciim ampliato, postice -abruptius 
angustato , supra sat impresso; scutello paullo transverso , sub- 
quadrato; elytris basi conjunctim emarginatis , margine mediocri , 
subdeplanata, humeris obliquis, obtuse rotundatis , lateribus versus 
apicem paullo angustatis, apice subtruncatis , supra longitrorsum sub- 
rectim deplanatis , postice sub circular iter declivibus , callo ante-apicali 
minutissimo , haud observando. 
$ Majores: Antennis parum crassis , corpore paullo brevioribus , articulis 
cylindricis, apice parum clavatis , clava angusta , articulo ultimo 
acuto. 
9 Antennis thoracis medium superantibus , tenuibus , clava latiore , articulis 
duobus ultimis brevioribus. 
Ptych. antiquus, Klug , Mus. Berol. 
- regularis, Jekel in litt. 
Var. /3. S' 9 Triplo minores: S' Antennis thoracem parum superantibus , 
tenuiusculis , articulis duobus ultimis clavce , majoribus individuis , 
AamZ brevioribus; scutello minuto , subcirculari. 
Ptych. nanus, Jekel in litt. (cum 9 ejusd. magnit .) 
Longit. (rostr. inch) 6^—10^ lin. = 14—24 millim. 
hum. If—2f lin. = 3^—6 millim. 
Longit. (rostr. inch) var. (3. (i nanus , Jekel), 5 lin. = 11 millim. 
ZaZiZ. hum. 1§ lin. = 3 millim. 
Patria : Porto Allegro, Brasilia, Dom. Chevrolat; Bahia, Dom. Dupont. 
