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-Mamore 

 Camp 39. This subspecies is distinguished from the others by the 

 thicker thorax and petiolar node and the very sparse pile. 



199. Camponotus {Myrmoturha) maculatus subsp. ahunanus, 



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 tes.taceous; 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. (M.) 

 maculatus. 



