404 bulletin: museum of comparative zoology. 



joint twice as long as the penultimate. Eyes small, convex; situated 

 at middle of sides of head. Prothorax slightly transverse, rounded 

 dorsally and laterally. Promesonotal suture faintly impressed. Meso- 

 epinotal suture not discernable. Epinotum in profile slightly convex 

 above; its base rounding into the declivity and equal to it in length. 

 Petiole from above transverse, sides rounded; in profile deeper than 

 thick, anterior surface nearly straight, the posterior concave; ventral 

 surface with a large flat tooth anteriorly. Gaster about as long as 

 the thorax and epinotum together; first and second segments subequal, 

 the former with a large anteroventral tooth. Legs robust; posterior 

 coxa armed with a large curved spine. 



Sublucid. Head regularly, longitudinally striate and rugose. 

 Thorax and epinotum shining, sparsely punctate, their pleurae 

 coarsely striate transversely. Epinotal declivity transversely striate. 

 Petiolar node with transverse rugae. Gaster with coarse longitudinal 

 striae. Legs finely punctate and shining. 



Head, antennae, body, and legs with fine short pilosity. 



Color brownish red ; legs, mandibles, and antennae brownish yellow. 

 Pilositv white. 



Described from several workers taken at Madeira-Mamore Camp 

 39. 



This distinct species is the first Rhopalopone to be recorded from 

 America, the four other known species inhabiting Borneo and New 

 Guinea. 



8. Holcoponera striatula Mayr. 



Very common in the vicinity of Natal, where it was nesting beneath 

 stones and logs, in rather large colonies. One colony was found at 

 Para. S 9. 



9. Holcoponera moUcri Forel. 



A single worker from Madeira-Mamore Camp 39 agrees with 

 Forel's description of this species from Blumenau. It is larger than 

 H. striatula, the mandibles are more coarsely striate and all the funicu- 

 lar joints are distinctly longer than broad. In its other characters 

 it is very similar to H. striatula. 



