92 Psyche [Sept.-Dee. 
as in the variety inf emails. The prothorax lacks all traces of 
margination. The mesonotal disc is conspicuously elevated. 
Type locality: Granada, Nicaragua. (Baker Coll.). 
The new variety is closest to the variety inf emails from which 
it differs by the coloration, elevated mesonotal disc and the more 
pronounced sculpture. 
Cotype No. 101, 3 workers in the Haskins Collection. 
Described from specimens marked cotype 23145, in the Har- 
vard Collection. 
Pseudomyrma tenuis var. andina var. nov. 
Worker. 
Length 5 mm. Identical with the type except for the colora- 
tion, which is reddish yellow as in the variety paranensis. The 
node is spined as in the type but the margins are sharper and 
the spines longer. The sculpture on the thorax is much coarser 
than in the type and consists of coarse punctures (fine puncta- 
tion in the type) . The head is a little broader in the new variety. 
Type locality: Lima, Peru. From an unnamed tree. 
Cotype No. 69, Haskins Collection; one pin has been depos- 
ited in the Museum of Comparative Zoology and is labelled 
Co type 26814. 
Pseudomyrma tenuis var. guatemalensis var. nov. 
Worker. 
Length 6 mm. Color reddish yellow with the head brownish 
yellow. More robust than the type; both the pro- and meso- 
thorax broader than long; node without either angles or spines 
behind, which distinguishes this variety from all others; the 
margin of the node is sharply raised and is brownish, contrast- 
ing sharply with the bright yellow color of the sunken portion 
of the node from above. 
Type locality: Esquintla, Guatemala. 
Cotype No. 70, Haskins Collection. 
Pseudomyrma triplaridis Forel. 
1904, Zool. Jb. Syst., 20, 684, all castes. 
Worker. 
Redescribed for the purpose of illustrating characters which 
can be used in separating the newly described subspecies. 
Length 4. 5-4 .8 mm. Head 11/3 times as long as broad, with 
