New Species of Heteromera. 315 



species, collected by my brother on the Amazons) , which 

 I propose soon to describe under the name of Garnaxus 

 HaimiueUii . 



yEDIATORIX, n. g. (Pi. XV. fig. 4) . 



Closely related to Goniadera, from which it differs in 

 having the mentimi * shorter, wider, and cordiform ; tlie 

 lahium shorter and broader, with the anterior angles 

 more strongly rounded ; the tnaxiUary palpi shorter and 

 stouter, with the second joint broadly and very obliquely 

 truncate and somewhat angular within, the third slightly 

 arcuate and angularly produced at the apex within ; 

 head, behind the eyes, broader and squaver; epistoma 

 longer, decidedly and broadly emarginate in front, and 

 but little thickened ; antenncB shorter (not attaining the 

 length of the pro thorax), stouter, the joints becomi'ng 

 very gradually wider as they approach the extremity ; 

 last joint very robust, and broadly rounded at the apex; 

 protliorax decidedly longer than broad ; squarely truncate 

 at each extremity; moderately rounded at the sides, 

 which are somewhat sharply crenulate at their edges ; a 

 little contracted in front and behind ; the fore angles 

 forming nearly right angles, the hind obliquely truncate ; 

 elytra much flatter, and consequently less declivous be- 

 hind, less expanded behind the middle, a little more 

 rounded at the shoulders, much less sinuous at the lateral 

 margins ; epi pleural fold sub-horizontal ; prosternal process 

 terminating behind in a small triangular point ; fore and 

 hind thighs somewhat strongly incrassate, the former 

 with a small oblique tooth near the base ; the latter Avith 

 a broad triangular tooth near the apex ; intermediate 

 thighs compressed, expanding from the base, with a 

 broad blunt tooth near the extremity ; all the tibiae com- 

 pressed and angular, without visible spurs ; the anterior 

 arched and acutely produced at the apex within ; the 

 intermediate strongly curved at the base, then ex- 

 panded, and somewhat sinuous, to the extremity; the 

 posterior so sharply and strongly curved, or bent, at the 

 base that they might be said to be hoohed, then expanded 

 and sinuous to the apex, with an irregular row of sharp 



* In all the species of Goniadera examined by me, the nientum is con- 

 vex, a little longer than ■wide, broadly emarginate in front, the fore angles 

 somewhat rounded, the sides strongly rounded anteriorly, and very 

 strongly contracted at the base ; and not, by any means, " quadrangulaire 

 ou trapeziforme et tronque en avant," as given by M. Lacordaire. 



TRANS. ENT. SOC. 1868. PART IV. (dECEMBER) . Z 



