172 
greyish lines. Antennse black, sixth joint thickened, with a ring 
of dense white hairs in both sexes. Thorax marked with eight 
slender, greyish or tawny lines, of which four are on the upper 
surface and two on each side, including the supracoxal streak, 
which in this species is slender, like the other lines. Elytra 
greatly elongated; shoulders very prominent, thence gradually 
narrowing to the apex, the latter truncated, with outer angles 
spinose ; surface olivaceous black, marked with a moderate num- 
of larger and smaller spots, widely separated from each other, 
but very irregularly dispersed; apex edged with whitish. Body 
beneath black, marked with ashy or tawny streaks and spots. 
Legs black, ringed with tawny and grey. 
^ . Terminal abdominal segment narrowed from the base ; 
apex of both dorsal and ventral plates ernarginate-truncate. 
Anterior tarsi very broady dilated and fringed. 
$ . Terminal abdominal segment elongate and tapering; apex 
of both dorsal and ventral plates ernarginate-truncate. 
Para, also Ega, Upper Amazons ; common. 
35. Colohothea contaminata, Serville. 
ColohotJiea contaminata, Serv. Encycl. Meth. x. p. 337. 
C. valde elongata, angustata, postice vix attenuata, olivaceo-nigra, 
vertice linea unica cinereo-fulva, thorace lineis quatuor, quarum 
externa utrinque usque ad oculum extensa et vitta supracoxali 
supra genas continuata ; elytris maculis cinereo-fulvis passim 
confluentibus, vel cinereo-fulvis nigro irregulariter maculatis, fas- 
cia lata subapicali nigra ; antennis utroque sexu nigris, articulo 
sexto annulo incrassato albo. Segmento ultimo abdominali maris 
attenuate, apice emarginato ; foeminee angustato, lamina dorsali 
obtusa, ventrali angulis productis ; maris tarsis anticis valde dila- 
tatis. Long. 6-^10 lin. S $ • 
Generally distributed and common throughout the Amazons 
region ; also found at Cayenne. 
36. Colohothea geminata, n. sp. 
C. elongata, postice vix attenuata, olivaceo-nigra, vertice linea unica, 
thorace lineis duabus antice et postice conjunctis ; elytris maculis 
numerosis in lineis curvatis confluentibus fulvo-griseis. Long, 
lin. 6 $ . 
Head black, forehead with three tawny-grey lines, and vertex 
with a single line ; cheeks with a tawny-ashy stripe. Antennse 
black, sixth joint with a broad white ring. Thorax black, sides 
each with two tawny-ashy stripes joined together near the front 
and posterior margins, and continuous with the cheek-stripe. 
Elytra elongated, of very nearly the same width from base to 
apex in both sexes ; external angle of the truncature spinose ; 
