399 
of the Amazon Valley. 
cylindricus, niger^ capite thorace antennisque basi fulvo- 
rufis, his clava piceo-nigra ; thorace postice ntrinque 
macula magna cinereo-flava ; scutello Isete flavo ; elytris 
humeris, macula obliqua triangular! basi angulata versus 
basin ascendente, macula communi triangularis et fascia 
angusta biarcuata postica, Isete flavis ; prothorace subtus, 
pectorCs fasciisque quatuor ventralibus flavis; pedibus 
nigris. 
Long. 44 lin. 
Hah. — Ega. 
9. Mecometopus Flavius j n. sp. 
CylindricuSs niger, capite, thorace, antennisque basi 
fulvo-rufis, his clava piceo-nigra ; thorace postice utrinque 
macula cinerea ; scutello Isete flavo ; elytris macula magna 
rotundata (prope humerum incisa) , altera communi rhom- 
boidea, fasciaque (prope suturam valde dilatata), Isete 
flavis ; pectore segmentisque quatuor ventralibus flavis ; 
pedibus nigris. 
Long. 5 lin. 
Hah. — Santarem.* 
10. Mecometopus troglodytes. 
Clytus troglodytes j Lap. & Grory, Monogr. p. 33, pi. vii. 
f. 41. 
Breviter cylindricus, niger ; thorace ovato ; elytris 
linea angusta abbreviata obliqua prope basin, macula 
parva communi triangular!, linea transversa pone medium, 
albis; antennis brevibus, clavatis. 
Long. 3 1 lin. 
Hah. — Para. 
* The following is a new species allied to M. Icetus, but different from 
the preceding, and from all those described by MM. Chevrolat and 
Thomson. 
Mecometopus Jansoni, n. sp. 
Cylindricus, njger, capite et thorace ferrugineo-rufis ; hoc subgloboso, 
postice angustato ; scutello flavo ; elytris macula magna ovata prope 
humerum, altera parva communi ohcordata, fasciaque postica lata recta, 
la3te flavis ; pectore segmentisque duobus ventralibus cinereo-flavis ; 
pedibus nigris. 
Long. 5 lin. 
Hab. — Chontales, Nicaragua (Janson fil.) 
