397 
of the Amazon Valley. 
triangular! communi vittam approximante, et fascia an- 
gustiori versus apicem, Igete flavis ; subtus macula magna 
metasterni, ventrisque segmentis duobus basalibus^ flavo- 
tomentosis; antennis subclavatis^ nigris. 
Long. lin. 
Hah. — Obydos, Guiana side of Lower Amazons. 
8. Mecometopus Wallacii. 
Clytus Wallaceij Wbite^ Cat. Longic. Brit. Mus. p. 259. 
Cylindricus, ater ; tborace breviter oblongo-rotundato, 
elytris paulo angustiori, cinereo vage fasciato; scutello, 
elytrorum vitta abbreviata obliqua prope basin^ et macula 
triangular! communi vittam approximante, Isete flavis, 
vitta lata ante apicem grisea; subtus macula magna me- 
tasterni, ventrisque segmentis duobus basalibus, flavo- 
tomentosis; antennis tenuibus, apice subclavatis, piceo- 
rufis, clava pallida. 
Long. lin. 
Hah. — Ega. 
4. Mecometopus triangularis. 
Clytus triangularis, Lap. & Gory, Monogr. p. 31, pi. 
vii. f. 38. 
Gracilis, cylindricus, niger, capite rufo-piceo, antennis 
dimidio apical! pallido ; thorace oblongo^ovato, obscure 
griseo, medio nigro ; elytris margine basali, fascia valde 
obliqua abbreviata, macula triangular! communi ante 
medium, et triente apicali, griseis ; metasterno fasciisque 
duabus ventris basalibus flavo-cinereis. 
Long. 4 lin. 
Hah. — Para. 
5. Mecometopus Icetus. 
Clytus Icetus, Fabr. Syst. El. ii. 348. 
Cylindricus, niger, capite antennis et thorace fulvo- 
rufis; hoc oblongo, lateribus vix rotundato, postice 
