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- 
épinotal 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 ruge. Gaster with coarse longitudinal 
striz. Legs finely punctate and shining. 
Head, antennae, body, and legs with fine short pilosity. 
Color brownish red; legs, mandibles, and antennae brownish yellow. 
Pilosity white. 
Described from several workers taken at Madeira-Mamoré 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. -8'° 9° 
9. Holcoponera méllert Forel. 
A single worker from Madeira-Mamoré 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. 
