166 
tuor cinereo-fulvis ; elytris confluenter fulvo-cinereo maculatis, 
plaga quadrata apicali nigra. Long. 5f-6| lin. S 2 • 
Head blackish, streaked with tawny, vertex with two divergent 
tawny-ashy lines. Antennse black, fourth, sixth, and tenth 
joints white at the base. Thorax black ; disk with two tawny- 
ashy vittse continuous with the lines on the crown of the head, 
and, like them, divergent posteriorly ; besides these, there is a 
narrower vitta on each side at the extreme edge of the pro- 
notum, and scarcely visible from above. Elytra with a promi- 
nent black tubercle at the apex of the prominent shoulders, 
gradually tapering, apex truncate, sutural angles scarcely pro- 
minent, external spiniform ; surface sprinkled with tawny (and a 
few grey) spots, which are confluent, but do not leave very distinct 
black spaces ; close to the apex, on each, is a large square black 
patch, the apex itself being edged with whitish. Body beneath 
ashy-tawny; breast, and abdomen on the sides, streaked or 
spotted with black. Legs varied with ashy and black. 
. Larger and more robust than the female, both in body 
and limbs ; anterior tarsi dilated and fringed. Terminal abdo- 
minal segment short, apex of both the dorsal and ventral plates 
emarginated. 
$ . Terminal abdominal segment elongated, and projecting 
beyond the apex of the elytra, but not tubular, and somewhat 
flattened, with the apex both of the dorsal and ventral plates 
truncated and notched in the middle. 
S. Paulo, Upper Amazons; rare. 
26. Colobothea pur a, n. sp. 
C. elongata, postice attenuata, nigra ; thorace vittis quatuor elytris- 
que maculis confluentibus cinereo-fulvis, his spatio apicali nigro ; 
antennis rohustissimis ( d* ), nigris, articulo sexto annulo lato albo, 
8^® et 10"^° basi cinereis. Long. 5|-6| lin. S • 
Head black, with ashy lines, vertex with two divergent tawny- 
ashy lines. Antennse ( ^ ) extremely stout, gradually tapering 
to the apex, deep black ; the joints from the base to the sixth 
spotless ; the sixth has a white ring occupying two-thirds of the 
- length of the joint ; the base of the eighth joint is grey (on one 
side only), and the tenth joint has an ashy ring. Thorax deep 
black, the central part with two ashy-tawny vittse not continuous 
with the lines of the crown, and parallel ; the sides near the 
episternum have also each a tawny-ashy line. Elytra tapering 
in straight lines to the apex, the latter truncated, with sutural 
angle not produced, external dentiform ; surface thinly and irre- 
gularly sprinkled with punctures, each of which has a very short 
strong bristle, and being surmounted by a granule ; olivaceous- 
black, sprinkled with ashy or tawny-ashy specks, everywhere con- 
