72 
also is marked with four indistinct black spots. Elytra depressed, 
sides nearly straight, apex briefly truncated, angles of the trun- 
cation obtuse j humeral angles moderately prominent, the lateral 
Carina extending thence towards the apex, obtuse, but the centro- 
basal ridges are strongly elevated, acute, and naked ; the surface 
is somewhat evenly punctured throughout, and of a sooty hue, 
like the rest of the body, but the apical half has a few whitish 
specks, and on the disk behind the middle on each side is a short 
oblique black line. Body beneath and legs olive-brown, base of 
thighs pallid ; tibise and basal joint of tarsi also each with a pale 
ring. The basal joint of the posterior tarsi is longer than the 
two following taken together. 
Neighbourhood of Santarem, Lower Amazons. 
3. Lophopoeum circumflexum, n. sp. 
L. curtulum, depressum, postice valde attenuatum, ferrugineo-fuscum : 
elytris singulis pone medium linea abbreviata cinerea maculaque 
lateral! notatis, apice breviter transverse truncatis, carina centro- 
basali magna acutissima. Long. lin. 
Head dull brown. Antennae greatly elongated, fine as a hair, 
most of the joints furnished with a short bristle at the apex 
beneath ; rust- coloured. Thorax with the lateral tubercles spini- 
form, disk punctured, rusty brown, the middle with two broad 
dusky stripes, flanked by spots of the same colour. Elytra tri- 
gonal, shoulders prominent ; lateral carina obtuse, apex briefly 
truncated, with the angles rounded j surface thickly punctured 
towards the base ; centrobasal ridges strongly raised and acute, 
naked, or nearly so ; ashy or rusty brown, spotted with darker 
brown, the disk behind the middle having on each side a short, 
oblique pale ashy line, accompanied on the side nearer the base 
with a smaller line of the same hue, lying at right angles to it, 
the pale lines margined with dark brown. Body beneath and 
legs rusty brown. 
Ega ; on dried twigs. 
4. Lophopceum hituherculatum^ White. 
Leiopus bituberculatus, White, Cat. Long. Col. Brit. Mus. ii. p. 382. 
“ L. puiictulatus, cinereo-fuscus : antennis subferrugineis : oculis 
supra approximatis : elytris supra subplanis, arcu postmediauo ci- 
nereo, singulis ad basin medio tuberculo parvo uncinato, ad me- 
diam et posticam partes cinereo variegatis ; femoribus basi palli- 
dis ; tibiis pallido uniannulatis ; tarsorum articulo primo pallido. 
Long. 3^ lines. Ega.” (White, 1. c.) 
This species very closely resembles L. circumflexum in shape 
and colours ; but the centro-basal ridges are reduced to a tuber- 
cle. The lateral thoracic spines are placed near the middle of 
