1944] Genus Pseudomyrma 65 
Gaster light brown with dark brown spots, like freckles 
santschii , sp. nov. 
Gaster not spotted with brown gracilis group, 
(remaining forms). 
Group gracilis 
PL IV, fig. 26-35 
1. Petiolar node in profile with a very steep anterior face. PI. 
II, fig. 32 ; length 9-10 mm.; dark brown 
subsp. squamifera 
Petiolar node of different shape 2 
2. Pronotum broader than long; length 8.5 mm.; color vari- 
able subsp. agilis 
Pronotum as long as broad or longer than broad 3 
3. Head and thorax smooth and shiny; length 6. 4-6. 8 mm.; 
epinotum with a semilunar impression; gaster without 
pubescence var. glabiventris 
Not with these characters 4 
4. Peduncle relatively short: 
A. subsp. maculata. Peduncle shorter than in the type; 
pilosity more abundant. PI. Ill, fig. 34. 
B. gracilis type. Color extremely variable; most of the 
named forms fall in fact under the definition of 
the type. 
C. subsp. mexicana. More robust than the type; black 
with the prothorax red. PI. IV, fig. 29, 33. 
D. subsp. carapuna. Smaller than agilis and more pilose 
than the type. PI. IV, fig. 27. 
Peduncle relatively long, usually with a secondary dilata- 
tion at the level of the stigmata: 
E. subsp. sericata. Thorax vividly red, head and gaster 
black. PI. IV, fig. 26. 
F. var .peruviana. Peduncle very long; mesepinotal disc 
very elongated. PI. IV, fig. 31. 
G. var. longinoda var. nov. Peduncle very long as in the 
preceding form; shoulders very overhanging. 
(The species alternans and faber are probably nothing 
more than color varieties of the species gracilis ; we have 
not seen the types.) 
