326 
Mr. H. W. Bates on Cerambycidce 
fasciis duabus et abdomine vittis quatuor albo-tomentosis ; 
pedibus rufo-piceis, posticls elongatis_, femoribus gradatim 
clavatis^ tibiis apicem versus incrassatisj pilosis. 
Long. 3J lin. 9 . 
Hah. — Para and Ega. 
15. Odontocera hisulcata, 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, grossissime sub'Confluenter 
passim punctate ; elytris abdomine paululum brevioribus, 
gradatim angustatis, apice oblique truncatis, toto disco a 
basin usque ad apicem Isevissimo, vitreo, vittam abbre- 
viatam testaceo-albam includente, marginibus grosse punc- 
tatis ; pedibus omnibus brevibus, robustis, femoribus 
fortiter clavatis, nigris, tibiis posticis incrassatis, baud 
pilosis, bis tarsisque Isete fulvis. 
Long. 5 lin. 
A remarkable species, wbicb, from tbe inequalities of 
tbe tborax, might be considered to belong to Acyphoderes, 
but wbicb differs from that genus in tbe elongate rostrum ; 
in tbe last-named feature it exceeds all other species of 
Odontocera. 
Hah. — Eiver Tapajos. 
Genus Isthmiade. 
Thomson, Syst. Ceramb. p. 166; Lacord. Gen. viii. 504. 
Tbe striking resemblance wbicli the species of this genus 
bear to species of Bracon (Earn. Ichneumonidce)i^ increased 
by tbe filiform prolongation of the abdomen in tbe $ , 
wbicb imitates the ovipositor, and by tbe yellow and 
black wings. 
1. Isthmiade ichneumoniformisj n. sp. 
I^igra, nitida, elytris testaceo-flavis, pectore abdomine- 
que (apice excepto) rufis ; pedibus testaceo-rufis, femori- 
bus posticis late fusco-annulatis, tibiis apice tarsisque 
fuscis ; alis flavis, fascia apiceque nigris. 
