405 
of the Amazon Valley, 
et dorso trinodoso ; scutello argenteo; elytris velutim’s, 
pone medium utrinque prope suturam macula obliqua 
argentea; antennis articulo 3io apice infra nigro-peni- 
cillato, 5 to scopa magna nigra, 6 to scopa parva alba. 
Long. 6. lin. S • 
Hah. — River Tapajos. 
Olivier^s description is good, but his figure is very 
bad. 
3. Cosmisoma argyreum, n. sp. 
Minus robustum, elongatum, depressum, nigrum ; tho- 
race subcylindrico, vix constricto, medio baud tumido, 
nitido, supra eequali, punctulato ; scutello argenteo ; ely- 
tris utrinque medio linea longitudinali arg*entea ; antennis 
articulo 3io apice infra nigro-penicillato, 5to scopa magna 
nigra, 6to sparsim argenteo-pubescente ; corpore subtus 
tenuiter argenteo-pubescente ; abdomine subglabro. 
Long. 4-54 
Hah. — Bga. Very abundant, occasionally, at flowers, 
/ 
4. Cosmisoma speculiferum. 
Ceramhyx speculifer. Gory, in Guer. Icon. R. A. p. 231. 
Elongatum, depressum, nigrum ; thorace antice et 
postice constricto, medio tumido, dorso quadrinodoso ; 
scutello argenteo ; elytris apud medium plaga magna 
communi subquadrata argentea; antennis articulis 1-4 
sparsim cilia tis, 5 to scopa magna nigra, 6 to scopa parva 
argentea; corpore subtus argenteo-tomentoso. 
Long. 6 lin. c?. 
Hah. — Para. 
5. Cosmisoma Imeellum, n. sp. 
Parvum, gracile, nigrum ; thorace subcylindrico, elon- 
gato, vix constricto, medio hand tumido, supra paulo 
insequali, lateribus insequaliter grosse punctatis, parte 
TEANS. ENT, SOC. 1870. PAET IV. (DECEMBER.) P P 
