44 
Psyche 
[Mar. 
Pseudomyrma triplarina (Weddell) 
Weddell, 1849, Ann. Sc. Nat. Bot. (3) 13 : 40-113, 
249-268 (My r mica ) . 
P. arboris-sanctce Emery, 1894, Bnll. Soc. Ent. Ital., 
26 : 147. 
P. arbor is- sanctce var. ecuadoriana E. Enzmann, 1945, 
pp. 79-80 (MCZ 26809). 
The types of ecuadoriana are few, partially frag- 
mented, and accompanied by what appear to be Azteca 
workers glued to the card with the ecuadoriana. I can 
see no characters which distinguish them ( ecuadoriana ) 
from a series of triplarina workers from several South 
American localities in the Wheeler Collection. 
Following the publication of Dr. Enzmann ’s paper on 
Pseudomyrma , others were published by his daughter, 
Miss Jane Enzmann. All but one of the species de- 
scribed, however, appear to be synonyms of common 
Nearctic forms. Dr. William S. Creighton has discussed 
these forms with me, and I am grateful for his opinions 
on several obscure cases. His forthcoming book, which 
amounts to a revision of North American ants, will also 
carry notes on the synonymy of these forms, but techni- 
cal difficulties prevent him from dealing with them at any 
length. Most species treated below involve Enzmannian 
names, but several other forms of older authors are 
changed in status as well. 
Myrmecina americana Emery 
M. latreillei snbsp. americana Emery, 1895, Zool. Jahrb. 
Syst., 8 : 271. 
M. latreillei snbsp. americana var. brevispinosa Emery, 
idem., p. 271. 
M. graminicola snbsp. quadrispina J. Enzmann, 1946, 
Jour. N. Y. Ent. Soc., 54 : 13-15, figs. 1, 2, worker. 
In the manuscript of his work on North American ants, 
which he has kindly allowed me to examine, Dr. Creigh- 
ton has raised the form known for many years as Myrme- 
cina graminicola snbsp. americana to the rank of species. 
