1962] 
Brown — Strumigenys 
245 
Distribution : Panama, British Guiana, Amazonian Bolivia ; prob- 
ably widespread in hylaean South America. 
28. Strumigenys elongata Roger, 1863 
Brown, 1954a: 189-192, worker, female, male, variation, synonymy, distribu- 
tion, biology. 
Biology : This species is definitely a collembolan feeder, common in 
the leaf litter of tropical forest. It seems to tolerate drier as well as 
wet forest types. 
New records: Mexico: Pueblo Nuevo and El Palmar, near Tet- 
zonapa, Veracruz (E. O. Wilson leg.). Ocosingo Valley, Chiapas (C. 
and M. Goodnight and L. Stannard leg.). 
Distribution : Southern Mexico to Bolivia and southeastern Brazil. 
Synonyms: S. imitator Mayr, S. elongata subsp. nicaraguensis 
Weber. 
29. Strumigenys consanii Brown, 1954 
Brown, 1954a: 192-194, worker. 
A larger, more robust relative of elongata with smooth and shining 
postpeticlar disc. 
Distribution: Costa Rica: La Palma, near San Jose, 1500 m alti- 
tude ; known only from the type series. 
Group of emeryi 
30. Strumigenys emeryi Mann, 1922 
Brown, 1959a: 97-99, worker, variation, distribution. 
Distribution : Honduras, southern Mexico. 
31. Strumigenys boneti Brown, 1959 (Fig. 12) 
Brown, 1959a: 103-104, worker. 
Distribution : Southern Mexico. 
32. Strumigenys nevermmni Brown, 1959 (Fig. 3) 
Brown, 1959a: 99-100, worker, female. 
Distribution: Costa Rica: Hondura, 1050 m altitude; known only 
from types. 
33. Strumigenys micretes Brown, 1959 (Figs. 13, 19) 
Brown, 1959a: 100-101, worker. Brown, 196: 58-60, variation, distribution. 
As mentioned in the note in couplet 21 of the key (below), this 
species and S. lacacoca may actually represent different populations of 
the same species. 
Biology : A species of rain forest and cloud forest. 
34. Strumigenys lacacoca Brown, 1959 (Figs. 2, 6) 
