326 Mr. H. W. Bates on Cerambycidce 



fasciis duabus etabdoraine vittis quatuor albo-tomentosis ; 

 pedibus rufo-piceisj posticis clong-atis, femoribus gradatim 

 clavatisj tibiis apicem versus incrassatis, pilosis. 



Long. 3^ lin. 2 . 



Ilah. — Paru and Eg-a. 



15. Odontocera hisuhata, n. sp. 



Minus elongata, nigra, nitida; capite rufo-piceo, rostro 

 elongatissimo ; antennis brevibus, apicem versus incrassa- 

 tis et serratis, rufo-piceis ; thorace oblongo, lateribus ro- 

 tundatis, supra late bisulcato, grossissirae sub-confluenter 

 passim punctate ; elytris abdomine paululum brevioribus, 

 gradatim angustatis, apice oblique truncatis, toto disco a 

 basin usque ad apicem laevissimo, vitreo, vittam abbre- 

 viatam testaceo-albam includente, marginibus grosse punc- 

 tatis ; pedibus omnibus brevibus, robustis, femoribus 

 fortiter clavatis, nigris, tibiis posticis incrassatis^ Laud 

 pilosis, his tarsisque laete fulvis. 



Long. 5 lin. 



A remarkable species, which, from the inequalities of 

 the thorax, might be considered to belong to Acyphodcres, 

 but which differs from that genus in the elongate rostrum ; 

 in the last-named feature it exceeds all other species of 

 Odontocera. 



Eab. — River Tapajos. 



Genus Isthmiade. 

 Thomson, Syst. Ceramb. p. 166; Lacord. Gen. viii. 504. 



The striking resemblance which the species of this genus 

 bear to species o^Bracon (Fam. Ichneumonid(e)\Q increased 

 by the filiform prolongation of the abdomen in the ? , 

 which imitates the ovipositor, and by the yellow and 

 black wings. 



1. Isthmiade ichneumonifonnis, n. sp. 



Nigra, nitida, elytris testaceo-flavis, pectore abdoniine- 

 que (apice excepto) rufis ; pedibus testaceo-rufis, femori- 

 bus posticis late fusco-annulatis, tibiis apice tarsisque 

 fuscis ; alis flavis, fascia apiceque nigris. 



