90 Psyche [Sept.-Dee. 
Type locality: Lima, Peru. 
The new species is closely related to P. gracilis with which 
it has many features in common. All members of the gracilis 
group however have at least a part of the body black or very 
dark brown, while in the new form the dominant color is reddish 
brown. The freckled abdomen sets the new species aside from 
the numerous other forms related to P. gracilis. 
Holotype No. 80, Haskins Collection; 3 Paratypes. 
Pseudomyrma sericea var. acaciorum var. nov. 
Worker. 
Length 3. 5-3. 8 mm. Smaller than the other described form 
of sericea except the variety vineni Forel. Color chocolate 
brown, with the anterior part of the head, scapes and tarsi yel- 
low; the funiculi, tibiae and sides of the prothorax brownish 
yellow. The clypeal lobe is rounded-triangular as in the variety 
cordice. The base of the epinotum forms a square with rounded 
corners, and is shorter than the declivity. The fine hairs on the 
pronotal angle, and on the nodal angle (one on each side) are as 
in the other sericea and seem to be characteristic of the species. 
Type locality: Tumba Muerto Road, Canal Zone. Living in 
Acacia spadicigera. 
The new variety differs from all others by its color pattern, 
structure of the epinotum and pedicel in profile. 
Described from a specimen labelled cotype 22865, in the 
Harvard Collection, 21 specimens. 
Pseudomyrma sericea var. lisa var. nov. 
Worker. 
The new variety agrees very closely in stature and even in 
coloration with P. sericea var. acaciorum which lives on Acacia 
spadicigera. 
It differs from the latter by its slightly smaller size and color 
pattern. P. lisa has a beautiful color, deep lustrous brown and 
golden yellow. The yellow portions are: mandibles, clypeus, 
cheeks, antennae, pronotum, legs and pedicel; the pronotum has 
two small dorsal spots ; other light brown spots or areas are on 
the sides of the prothorax, upper coxae, central part of the fem- 
ora and a small triangle on the petiole, between the character- 
istic backward directed spines. The deep brown areas are bor- 
dered with yellow on the mesonotum and on the declivity of the 
epinotum. 
