IG 
Psyche 
[February 
Subfamily Ponerince. 
Pfobolomyrmex? boliviensis sp. nov. (Fig. 2). 
Female. — (dealated) Length 2.8 mm. 
Head about one and one-half times as long as broad, with 
slightly convex sides, rounded occipital angles and straight 
border; vertex and posterior portion of head broadly and evenly 
rounded, anterior part projected as a thick plate, broader than 
long and truncated in front, completely covering the mandibles. 
Clypeus on the anterior truncated portion, triangular, not 
sharply defined. Mandibles small and rather slender, blades 
rounding into the basal portions, with two indistinct and blunt 
teeth. Maxillary palpi 3-jointed, the first and second joints 
subequal in length and together as long as the third. Labial 
palp small, apparently 2-jointed. Frontal area rather large, 
feebly impressed. Frontal lamellae fused into a high, thin plate, 
strongly convex in profile; behind separated and very short. 
Antennal insertions near front margin of head, bordered by a 
fine Carina. Antennae 12-jointed, scape extending about four- 
fifths the distance to occipital corners; funiculus evenly enlarged 
distally, without club; first funicular joint longer than broad; 
joints 2-10 transverse; terminal as long as the three preceding 
joints together. Eyes small, little convex, situated at middle of 
sides. Ocelli small. Thorax long and rather narrow, moderately 
convex above and at sides, humeri broadly rounded Mesonotum 
one and one-third times as long as broad. Scutellum longer than 
broad, rounded behind, with feeble impressions at middle of 
sides. Epinotum with feebly convex base and nearly flat de- 
clivity, bluntly dentate at angle. Petiole elongate nodiform; 
from above, twice as long as broad, with the posterior 
margin concave at middle and subdentiform at sides; in profile 
longer than broad and nearly twice as thick behind as in front, 
its ventral outline bisinuate, with a blunt antero-ventral tooth; 
posterior surface strongly concave. Gaster slender, strongly 
constricted between the first and second segments, first segment 
narrowed in front, shorter than the second, remaining segments 
small, directed downward. Sting well developed and strong. 
