Mr. H. W. Bates’s Notes on Longicorn Coleoptera. 201 
of a blanket or sponge, and is formed of coarse loosely-felted 
short hairs. 
Amphionycha suturata. 
Modice elongata, cinereo-nigra, thorace dorso (vitta mediana postice 
dilatata excepta), elytris sutura et lateribus (haud usque apicem) 
fronteque vittis duabus albis; pedibus et antennis fulvis, tibiis 
tarsisque apice, scapo articuloque tertio, quarto apice, quinto ad un- 
decimum totis nigro-fuscis: capite inter antennas concavo, fronte 
convexa, vertice nudo grosse punctato; thorace antice angustato, 
angulis posticis prominulis ; elytris apice obtuse rotundatis, dorso 
punctulatis, carina laterali simplici, subrecta, elongata ; antennis 
(¢) corpore dimidio longioribus. 
Long. 53 lin. 
Brazil. 
Amphionycha pubicornis. 
Angustior, cylindrica, passim setosa, castaneo-fusca, subtiliter cinereo 
pubescens, capite, thorace antice, elytrorum sutura marginibusque 
et pedibus (tibiis tarsisque fuscescentibus) testaceo-fulvis, thorace 
utrinque linea obliqua antennarumque articulis quarto et quinto 
albo-testaceis: capite inter antennas profunde concayvo, fronte 
valde convexa, vertice ¢ plano, 2 valde convexo, geni dilatatis, 
mandibulis magnis ; thorace antice angustato, post medium paul- 
lulum dilatatato, deinde iterum angustato, angulis posticis promi- 
nulis ; elytris apice truncatis, angulo exteriore dentiformi, dorso 
lineatim punctulatis, carina laterali subrecta apicem fere attin- 
gente. 
Long. 4 lin. $ @. 
Lower Amazons (H. Smith). 
Although very closely allied to A. sutwrata, this species 
differs in many important points. The depression between 
the antenne exists in both sexes, and takes the form of a very 
deep fovea. ‘The erect pubescence extends over the whole 
body, including legs and antenne, fine erect hairs clothing 
the latter organs on all sides from base to apex, but replaced 
underneath the basal joints by the usual long cilia character- 
istic of the genus. The sexual differences in the size and 
convexity of the head and development of the mandibles it has 
in common with many allied species. 
Amphionycha postilenata. 
Subcylindrica, nigro-fusca, subtiliter pubescens, vix pilosa, fronte, 
thorace fasciaque postica elytrorum sulphureis, elytris apice 
griseis: antennis tenuibus, scapo elongato paullulum clavato, 
articulo tertio valde elongato, infra sparsim longe ciliato; scapo 
subtus, articulo tertio quartoque basi fulvo-testaceis; capite antice 
Ann. & Mag. N. Hist. Ser. 5. Vol. viii. 14 
