171 
vitta above the coxa on each side. Elytra with prominent and 
rather acute shoulders, thence gradually attenuated to the apex, 
which latter is truncated, the external angles produced each into 
a longish spine ; surface olivaceous black, marked with a large 
number of well-separated and squarish tawny-ashy spots, mostly 
arranged in rows, and leaving a distinct belt beyond the middle and 
another near the apex unspotted; apex itself edged with whitish. 
Body beneath ochraceous ashy. Legs greyish, varied with 
black. 
. Terminal ventral segment broadly truncated, angles pro- 
duced; dorsal segment obtuse, entire. 
Ega ; rare. 
33. Colobothea suhtessellata, n. sp. 
C. elongata, postice attenuata, olivaceo-nigra, vertice postice bi- 
lineato, thorace lineis duabus dorsalibus crassiusculis alteraque 
laterali et vitta supracoxali cinereo-ochraceis ; elytris maculis nu- 
merosis cinereo-ochraceis in seriebus subordinatis, spatio lato api- 
cali immaculate ; thorace absque tuberculis. Long. 8|- lin. $ . 
Head black; forehead with three slender lines, vertex with 
two divergent lines, and cheeks with a broad streak tawny ashy. 
Antennse stout, black, sixth joint with a broad white ring, tenth 
joint with an ashy streak on one side ( $ ). Thorax not con- 
stricted at the base, broadest at its basal angles, and free from 
tubercles ; surface black, with two moderately thick tawny lines, 
sides each with a similar line, not visible from above, and a 
broad tawny vitta above the coxa. Elytra moderately broad at 
the shoulders, and narrowed thence to the apex, the latter trun- 
cated, with the outer angles spinose; surface olivaceous black, 
marked with a large number of tawny spots, which are in some 
examples arranged in rows, and in others more or less confused ; 
there is a broad immaculate space at the apex, and the apex 
itself is broadly margined with white. Body beneath black, 
thinly clothed with ashy pile, and having a broad, distinct, 
ochreous lateral vitta. Legs blackish, ringed with grey. 
$ . Terminal abdominal segment elongated and tapering ; 
dorsal plate broadly notched ; ventral truncated, angles acute. 
Banks of River Tapajos ; rare. 
34. Colobothea octolineata, n. sp. 
C. valde elongata, postice attenuata, olivaceo-nigra, vertice linea 
unica, genis utrinque lineis duabus cinereis ; thorace lineis tenui- 
bus cinereis octo, quarum quatuor dorsalibus ; elytris humeris 
prominentibus, maculis cinereis discretis irregulariter dispersis. 
Long. 7i-ll lin. S $• 
Head black, forehead with two greyish lines, vertex with a 
single narrow line, and cheeks on each side with two oblique 
