of the Amazon Valleij. 325 



White's description is drawn up from a female spe- 

 cimen. The cJ differs in having a narrow black 

 margin to the vitreous central part, which is quite con- 

 tinuous, except for a small space at the apex. The elytra 

 are a little shorter than the abdomen, and dehiscent from 

 the middle ; the femora are abruptly and strongly clavate ; 

 the antennae are but very slightly thickened towards the 

 apex, almost filiform. The species, however, is very 

 closely allied to O.fasciata, in which the antennas are 

 very strong-ly thickened. It is still more closely related 

 to 0. triliturata, in which the hind femora have no brush- 

 like hairs. 



Hah, — Ega, flying about dead trees; also Tapajos. 



13. Odontocera simplex. 

 White, Cat. Longic. Brit. Mus. p. 189. 



'' Nigra, punctata ; elytris elongatis vitreis pallidis, 

 margine late sutura angaste nigris ; femoribus pedum 

 duorum posticorum basi pallidis ; tibiis posticis gracilibus 

 nudis; antennis nigris, articulis 5-8 basi pallidis." (White. )- 



Long. 4 lin. (^ . 



The antennee from the fifth joint are dilated, com- 

 pressed, and serrate. The elytra are shorter than the 

 abdomen, dehiscent, and sublinear. 



Hah. — Para. 



14. Odontocera cercerina, n. sp. 



Postice, attenuata, nigra, opaca ; capite dense punctato, 

 fronte lineis duabus aureo-tomentosis; antennis brevibus, 

 rufo-piceis, versus apicem valde incrassatis ; thorace 

 elytris latiori, rotundato-quadrato, haud profunde sed 

 dense punctato, nigro, opaco, marginibus antico et postico 

 aureo-tomentosis ; elytris extus mox pone humeros valde 

 attenuatis, sutura dehiscentibus, abdomine paulo breviori- 

 bus, apice subacutis, supra vitta valde curvata abbreviata 

 pallido-vitrea, pone hanc macula transversa alba, plaga 

 magna triangulari circum-scutellari nigra opaca grosse 

 punctata, reliquis nigris opacis, margine basali aureo- 

 tomentoso ; corpore subtus nigro opaco, pectore utrinque 



TRANS. ENT. SOC. 1870. PART ITI. (AUGUST.) A A 



