of the Amazon Valley, S05 
5. Heterachthes cegrotus, n. sp. 
Angustatus, linearis, pallide testa ceus, longe setosus ; 
thorace supra quinque-tuberculato, argenteo-griseo to- 
mentoso, nitidulo ; elytris apice oblique truncatis, angulis 
baud productis, supra nitidis, passim baud profunde 
punctatis et punctis setiferis conspersis, macula triangular! 
communi basali alteraqiie simili subbumerali pallide 
rufescentibus, fascia obliqua pone medium, altera recta 
transversal! prope apicem, apicibusque albo-testaceis ; 
femoribus elongatis, gradatim sed distincte clavatis. 
Long. 4 lin. A , 
Hah. — Ega. 
6 . Heteraclitlies sylphisj n. sp. 
Gracilis, linearis, capite tboraceque angustioribus, 
rufo-castaneus, nitidus ; capite fortiter punctato, tuberibus 
antenniferis obtusis ; tborace angusto, elongate, vix in- 
mquali, nitido, postice subtiliter punctulato ; elytris sub- 
planis, apice oblique truncatis, angulis baud productis, 
supra (punctulis paucis setiferis exceptis) Isevibus, fascia 
lata transversa recta ante medium alteraque simili apical! 
flavo-testaceis ; antennis pallide rufo-testaceis, articulo 
3io $ incrassato; pedibus elongatis, femoribus clavatis 
longissimis, posticis apicem elytrorum multo superan- 
tibus. 
Long. 34 lin. J . 
Differs wholly in facies from tbe majority of tbe genus 
wbicb bave short femora. 
Hah. — Eiver Tapajos. 
7. Heterachthes deliciolus, n. sp. 
Gracilis, linearis ; capite piceo-rufo, subnitido ; tborace 
valde insequali, supra quinque-tuberoso, nigro-piceo, seri- 
ceo-opaco, argenteo-tomentoso ; elytris apice sinuato- 
truncatis, angulis paulo productis, supra (punctulis seti- 
feris exceptis) lasvibus, nitidis, castaneis, macula magna 
utrinque basali, fascia lata pone medium ad suturam 
antice dilatata, apicibusque testaceo-albis, parte basali 
pallide fulva; pedibus antennisque fulvis, femoribus 
clavatis, modice elongatis. 
Long. 3J lin. ( ? ?) . 
Hah. — Obydos, Lower Amazons. 
