1944] Genus Pseudomyrma 91 
P. sericea var. lisa is probably only a local variety of acaci- 
orum. The sides of the thorax are smooth in lisa (punctate in 
acaciorum ) . 
Type locality: Peru. 
Holotype No. 78, Haskins Collection. 
Pseudomyrma spinolae var. infernalis var. nov. 
Worker. 
Length 4.5 mm. Larger than the var. convarians. Color 
brownish yellow, with the gaster a little darker, barely missing 
being bicolored. The type is more reddish, as is the var. gaigei. 
Mandibles pale yellow with five strong teeth. Head finely punc- 
tate and opaque. Prothorax evenly rounded, not marginate, as 
broad as long in the midline. The node from above is sub- 
trianglar, approaching trapezoidal shape. 
Female. 
Length 5-5.5 mm. Head and pedicel very much longer than 
in the worker. The thorax, except prothorax, brown, as the 
gaster. The latter opaque (shiny in the worker). 
Male. 
Length 5 mm. Much darker than the other castes, with a 
very long and slender pedicel. 
Type locality: Red Tank, Canal Zone. Taken from an Aca- 
cia spadicigera. Other specimens were taken by Prof. Banks at 
Cambia, Canal Zone. The latter are more slender, with more 
reddish color and they approach the type in the weaker mar- 
gination of the prothorax. 
The new variety differs from the type by lack of margination 
on the prothorax; from convarians by larger size; from gaigei 
by the narrower postpetiole and from atrox by the non-notched 
clypeal lobe. 
Gynotype No. 100, Haskins Collection. Androtype No. 100A, 
Haskins Collection. 
Described from cotype 20547, Harvard Collection, many 
workers. 
Pseudomyrma spinolae var. scelerosa var. nov. 
Worker. 
Length 4 mm. Differs from all other forms of the spinolae 
group by lacking all traces of bicoloration. The body is uni- 
formly bright reddish yellow with the mandibles barely lighter 
colored. The whole body is opaque. The clypeal lobe is straight 
