NEW GENERA AND SPECIES OF COLEOPTEROUS INSECTS. 95 
Stirps. Maracopgermarta, Lat. 
Fam. Titiipm, Leach. 
Genus. Opiuus, Lat. 
OPILUS AURIPENNIS. 
Tab, XIII. Fig. 5. 
Op. ater ; thorace ngro ; elytris auratis nitidissims ; pedibus nigricantibus. 
Long. corporis 7 lin. ; lat. 2. 
Hab. in Brasilia, juxta Rio Janeiro. 
Mus. Hope. 
Descr. Antenne nigre, pubescentes, articulis tribus apicalibus maximis interné valdé 
productis. Palpi nigro-picei. Thorax ater nitidus, foveolaé media impressa, sub- 
tilissimé punctatus, ante medium contractus, lateribus pone medium rotundato- 
dilatatis. Elytra viridi-aurata nitidissima, anticé fortissimé punctata, posticé gla- 
berrima nitoreque flammifero fulgentia. Corpus subtis nigrum, punctatum. Pedes 
pilis albidis obsiti. Tarsi infra flavi, spongiosi. 
Variat thorace rubro ; antennis pedibusque rufescentibus. Forté specimen immaturum. 
This Brazilian insect is most nearly allied to Opilus: it will, however, probably form 
a subgenus. Its chief differences consist in the variation of the joints of the club of 
the antenne, and in the bluntness of the mandibular teeth as compared with those of 
Opilus. The last three joints of the antenne in the latter genus are widely diferent ; the 
ninth and tenth are trigonate, and the eleventh is obliquely truncated: in the present 
insect the ninth and tenth are trigonate with a deep incision, and the eleventh is ovate 
and depressed. Another remarkable distinction exists between this insect and the 
Opili generally : its tarsi are only four-jointed, the basal articulation usually found in 
that genus not being here observable. With these exceptions, its characters are those 
of the other Opili. 
Stirps. Lame.iicornes, Lat. 
Fam. Scarasazip£, MacLeay. 
Subfam. Copripzs. 
Genus. Cortoruina!. 
Caput magnum, ecorne: clypeo profundissimé inciso (scil. dente forti utrinque 
porrecto). 
' Kérrw, scindo ; piv, nasus. 
