1944] Genus Pseudomyrma 95 
tal corners. The clypeal lobe is short and narrow and has a 
convex anterior border. Scapes short, not attaining the middle 
of the eyes, which are a little more than 1/3 the sides of the 
head and long and flat. Head densely punctate and sub- 
opaque. Prothorax longer than broad, distinctly margined at 
the sides; mesonotal disc angular in front as in the type. Epi- 
notum ovoid and convex. Petiolar node subhexagonal. Post- 
petiole broader than long. The gaster is shaped as in the type. 
Petiole in profile with a strong antero-ventral tooth ; the lamina 
below not crenulated. 
Pilosity and pubescence considerably less than in the type. 
The color is uniformly red; in the immature specimens reddish 
yellow. 
Type locality: Blairmont, Berdice, British Guiana (Box 
Coll.). 
The differences between the new subspecies and the others 
are given in the key. 
Described from type 23147, Harvard University Collection. 
Pseudomyrma voytowskii sp. nov. 
Worker. 
Head longer than broad, with parallel sides, the eyes occupy- 
ing more than half the length of the sides. Mandibles white, 
smooth, with two larger apical teeth and some smaller ones. 
Scapes slender and short, not quite reaching the middle of the 
eyes. The whole head smooth, shiny and yellow except for a 
region on the occiput, which appears brownish; this is caused 
by the fact that the integument is transparent like a window, 
revealing the insides of the head. Prothorax not marginate, 
smooth and yellow. The mesonotal disc is a rounded triangle. 
Mesothorax and epinotum dark reddish brown, smooth, shiny 
on top, with heavy punctation on the sides. Pelicel in profile 
shaped as in tenuissima , with the anterior and posterior faces 
of equal slope; heavily punctate and devoid of ventral carina 
and ventral tooth. Postpetiole nodular in profile, with less 
coarse sculpture. Gaster stubby, smooth and very shiny. Peti- 
ole from above shaped as in subtillissima, subtriangular and 
very shiny. 
Color. Distinctly bicolored, with the anterior part of the 
head and the prothorax yellow. The rest of the body dark 
brown, appendages lighter brown. Pilosity nearly absent, hav- 
