106 Mr. H. W. Bates on the Longicom Coleoptera 



? . Terminal abdominal segment elongate and tapering; apex 

 of both dorsal and ventral plates emarginate-truncate. 

 Para, also Ega, Upper Amazons ; common. 



35. Colohothea contaminata, Serville. 

 Colobothea 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 ; aiitennis utroque sexu nigris, articulo 

 sexto annulo incrassato albo, Segmento ultimo abdominali maris 

 attenuate, apice emarginato ; fceminae angustato, lamina dorsali 

 obtusa, ventrali angulis productis ; maris tarsis anticis valde dila- 

 tatis. Long. 6-1—10 lin. S 2 • 

 Generally distributed and common throughout the Amazons 



region ; also found at Cayenne. 



36. Colobothea geminata, n.STp. 



C. elongata, postice vix attenuata, olivaceo-nigra, vertice linea unica, • 

 thorace lineis duabus antice et postice conjunetis ; elytris maculis 

 numerosis in lineis curvatis confluentibus fulvo-griseis. Long. 

 7|_811in. c??. 



Head black, forehead with three tawny-grey lines, and vertex 

 with a single line ; cheeks with a tawny-ashy stripe. Antennae 

 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; 

 surface blackish olivaceous, sprinkled with a large number of 

 tawny-ashy spots, which are mostly confluent, and tend to form 

 a pattern consisting of three irregular pale rings, on each ely- 

 tron, enclosing a blackish space : apex edged with tawny whitish. 

 Body beneath ashy, but tawny towards the sides; abdomen 

 spotted with black. Legs ashy, ringed with black. 



^ . Terminal abdominal segment short ; ventral plate emar- 

 ginate-truncate, angles produced ; dorsal plate obtuse and 

 notched in the middle. Anterior tarsi not dilated. 



? . Terminal abdominal segment tapering; dorsal 

 notched in the middle ; ventral truncate, angles not produced. 



Guiana side of the Lower Amazons and banks of the Tapajos; 

 also found at Cayenne. 



37. Colohothea concreta, n. sp, 



C. valde elongata, angustata, olivaceo-nigra, vertice linea unica, tho- 



