84 Psyche [Sept.-Dee. 
Pseudomyrma colei var. vistana var. nov. 
Worker. 
Described from a large number of workers, taken from the 
leaves of an unknown tree. The new form is almost identical 
with the type in structure, but differs markedly from it in color- 
ation. The mandibles are very pale yellow, with black teeth. 
The head and antennae are bright reddish-yellow, but all of the 
occiput, behind the eyes, is dark brown. The prothorax is yel- 
low with a large brown spot in the middle ; the mesonotum and 
epinotum are black; the pedicel and abdomen dark brown. The 
middle and hind coxae and the middle swollen parts of the fem- 
ora are reddish brown, the rest of the legs is yellow. The ventral 
part of the epinotum, pedicel and gaster are reddish yellow. 
The gaster is very smooth and shiny. 
Type locality: Bella Vista, Peru. 
Described from 6 workers labelled Cotype No. 72, Haskins 
Collection. One pin has been deposited in the Museum of Com- 
parative Zoology, and was labelled Cotype 26811. 
Pseudomyrma crenulata sp. nov. 
Worker. 
Described from specimens labelled erroneously P. kuenckeli 
in the Harvard Collection. 
Length 5-5.5 mm. Head as broad as long, markedly nar- 
rowed in front, with convex sides, well rounded posterior cor- 
ners and straight occipital edge. The eyes are less than half the 
length of the sides of the head and very convex. Mandibles 
powerful and coarsely rugose; clypeal lobe very short, broad 
and rectangular. Antennal scapes reaching beyond the middle 
of the eyes but do not attain the occipital border. The whole 
head finely shagreened-punctate and shiny. Prothorax as broad 
as long in the midline, sharply bordered with the border crenu- 
late (this is the first Pseudomyrma we have seen which has this 
character). Mesothoracic disc semicircular in front, concave 
behind; weakly elevated. Epinotal declivity broadest behind; 
petiole node trapezoidal, twice as broad as long. Postpetiole 
broader than long, with blunt corners at the sides. Thorax in 
profile weakly convex above, the epinotal declivity almost ver- 
tical. Petiole in profile similar to that of P. maligna , but shorter, 
with a nearly vertical posterior face and weakly crenulated 
lamina. Gaster very stout. 
