Species of Agra of the Amazons Region. 379 
32. Agra immersa, Klug. 
Agra immersa, Klug, Entom. Monogr. p. 21, pl. i. fig. 7. 
A. biseriate simillima, differt elytris cupreis. 
Long. 4 lin. 
Para. Collected by Sieber. I think it very likely this is only 
a geographical variety of the same stock as A. biseriata. I do 
not find the species among my own Para collections. 
33. Agra chalcoptera, Klug. 
Agra chalcoptera, Klug, Entom. Monogr. p. 23, pl. i. fig. 8. 
», elegans, Chaud. Ann. Soc. Ent. Fr. 1861, p. 130. 
A, biseriate similis, gracilis, nigro-nea, pilosa, elytris viridi- 
zeneis vel viridi-cupreis; antennis valde elongatis, rufescentibus, 
basi piceis ; capite ovato, pone oculos rotundato-attenuato ; 
thorace a medio usque ad apicem attenuato, lateribus cano- 
pilosis ; elytris truncatis, angulis suturalibus haud productis ; 
femoribus piceis, tibiis tarsisque rufescentibus. 
$ Metasterno et abdominis basi medio punctato-pilosis ; tibiis 
posticis simplicibus. 
Long. 43—6 lin. 
Equally common with A. biseriata at Ega; also found at Para, 
where Klug’s specimens were taken many years ago by Sieber. 
34. Agra graminea, D. sp. 
This species has a general resemblance in form to 4. chalcoptera, 
Klug, but differs in its much more slender figure, the bright 
-brassy-green colour of its thorax and elytra, and in other points. 
Baron Chaudoir has given me the following comparative descrip- 
tion of it :— 
“Color fere ut in 4. chalcoptera, Klug, (elegans, Chaud.), sed 
supra potius viridis, non cupreus; antenne pedesque simi- 
liter colorati. Quoad formam, A. tenui, Chaud., (Rev. & 
Mag. Zool. 1863, p. 9) affinis; caput pone oculos magis 
attenuatum, thorax pone medium paulo magis incrassatus, 
intra carinam externam elevatam et juxta lineam medianam 
evidentius irregulariter punctatus. Elytra paulo latiora, minus 
parallela, postice magis ampliata, apice omnino recté truncata, 
angulo externo minus acuto, striis multo grossius punctatis, 
interstitiis convexiusculis. Subter levis, nitida. 4. chalcoptera 
differt capite multo angustiori, basi haud foveolato, linea tenul 
tantum notato; thorace magis filiforme, omnino aliter punc- 
tato; elytris angustioribus, interstitiis alternis haud seriato- 
