MANN: THE ANTS OF BRAZIL. 475 
sparsely punctate, the punctures comparatively coarse. Pubescence 
is lacking and pile sparse. 
Color brown, the head darker; the basal parts of gastric segments 
are transversely banded with light ferruginous. 
Described from a single specimen taken at Madeira-Mamoré 
Camp 39. This subspecies is distinguished from the others by the 
thicker thorax and petiolar node and the very sparse pile. 
199. Camponotus (Myrmoturba) maculatus subsp. abunanus, 
subsp. nov. 
Plate 6, fig. 44. 
Worker major. Length 7 mm. 
Head, excluding mandibles, longer than broad, narrowed in front, 
with convex sides; posterior border excised, straight at middle, the 
angles prominent, and clypeus longer than broad, very broadly 
carinate at middle, the anterior border bilobed. Mandibles stout, 
with five rounded teeth. Antennae slender, the scapes barely reach- 
ing to occipital corners of the head. Thorax slender; pronotum 
distinctly longer than broad. Epinotum from above four times as 
long as broad; in profile slightly rounding from base to declivity, the 
two surfaces joining in a broadly rounded angle. Petiolar node 
wedge-shaped in profile, the anterior surface rounded, the posterior 
nearly flat; seen from behind its margin is evenly rounded. Legs 
short; the tibiae not compressed. 
Subshining; very finely shagreened, the head and pronotum less so 
than the rest. Mandibles sublucid, with fine punctures and few short 
hairs. Front with a few coarse superficial punctures. Pubescence of 
the head very minute, sparse, and scale-like; a few short erect hairs 
on the front and occiput. Thorax and abdomen with silky pubes- 
cence, which is most abundant on the gaster. Pile long and sparse 
on the thorax, shorter and abundant on the gaster. 
Color testaceous; mandibles, antennal scapes (except tip), tarsi, 
and a narrow transverse band at the apex of each gastric segment dark 
fuscous. Pile and pubescence yellow. 
Described from two major workers from Porto Velho. Possibly 
this should be considered a distinct species. The occipital angles of 
the head are unusually narrow, the clypeus more deeply notched and 
the antennal scapes are shorter than in the other forms of C. (.) 
maculatus. 
