216 Mr. H. W. Bates on the Longicorn C'okoptera 



length of the body ( $ ), brown, bases of the joints pale ashy, 

 basal joint ringed with ashy. Thorax widened from the front to the 

 lateral tubercles, which are short and acute, then strongly atte- 

 nuated and incurved to the base ; surface convex, varied with light 

 and dark brown, and with two black vittse each interrupted in 

 the middle ; side, below the tubercle, black, shiny. Elytra short 

 for this genus, broad at the base, gradually attenuated to near 

 the apex, thence suddenly attenuated, making the truncated apex 

 narrow; sutural spine short, external one elongated; shoulders 

 advanced and rounded, lateral carina strongly pronounced and 

 polished, deflexed sides coarsely punctured and with a smooth 

 carina; surface longitudinally convex, setose, and punctured; 

 two short, rugose, slightly elevated carina? near the base, and 

 one longer and smoother along the disk; the colour is brown 

 varied with ashy, near the scutellum is a dull blackish patch, and 

 behind the middle is an oblique black streak ; the anterior part 

 of the disk is asby, and there is a triangular ashy spot near the 

 apex. Body beneath black, with grey pile ; a row of ashy spots 

 on each side the abdomen. Legs shining pitchy red, spotted 

 with grey. 



$ Terminal ventral segment broadly and triangularly excised, 

 angles prolonged into acute spines. Dorsal segment broadly 

 truncated. 



On a bough of a dead tree, forest, Ega. There is a closely 

 allied and similarly coloured species found at Cayenne*. 



2. Colobothea velutina, n. sp. 



C. elongata, parallela, convexa, antice et postice declivis, thorace velu- 

 tino-nigro vitta laterali fulva ; elytris griseis fulvo nigroque macu- 

 latis, regione scutellari, maculis lateralibus duabus undulatis 

 plagaque quadrata apicali purpureo-nigris carneo-fulvo cinctis. 

 Long. 6-7 lin. S $ • 

 Head brown, a line central line on the vertex and a broad 



stripe down each cheek tawny ashy. Antennae one-third longer 



* Colobothea ligneola. Parum elongata, angustata, brunnea, cinereo 

 nigroque varia, corticis fragmento simillima. Caput piceo-fuscum. 

 Antennae piceae, articulis basi einereis. Thorax cinereo-fuscus, vittis 

 duabus nigris, lateribus nigris politis ; convexus, prope basin sinuato- 

 attenuatus, tuberculis lateralibus obtusis. Elytra brevia angustata, 

 apices versus eitius attenuata, apieibus sinuato-truncatis angulis sutu- 

 ralibus distinetis exterioribus productis ; supra grosse punctata, prope 

 basin et disco breviter costata, brunneo cinereoque varia, vitta brevi 

 suturali maculaque discoidali (lineola cinerea divisa) saturatioribus. 

 Corpus subtus nigrum polituru, cinereo varium, abdomine lateraliter 

 cinereo maculato : pedibus piceo-rufis, griseo maculatis. Fceminfe seg- 

 mento idtimo ventrali attenuato, apice sinuato-truncato bispinoso ; 

 dorsali apice rotundato, medio unidentato. Long. 3| lin. $ . Hab. 

 in Cayenna, a Dom. Bar lecto. 



