140 
Psyche 
' [December 
SUmmigenys leivisi Cameron 
Young larva: Length about 1 mm. Generally similar to 
louisianae. (Material studied: six young larvae from Jap- 
an; courtesy of Cho Teranishi.) 
Strumigenys nidi f ex Mann 
(PL 10, fig. 7) 
Length about 3.5 mm. Similar to louisianae, except in 
the following details: Mesothorax more swollen, abdomen 
less so. Body hairs — (1) occurring back as far as abdom- 
inal somite vii and covering all the prothorax, except the 
middorsal surface, longer (0.036-0.18 mm) ; (2) longer 
(0.054-0.148 mm) ; (3) longer (about 0.3 mm) and some- 
times deeply bifid, each branch bearing a single anchor- 
hook. Head hairs shorter (0.054-0.08 mm). Mandibles 
longer and narrower with more slender round-pointed 
teeth. (Material studied: a dozen larvae and semipupae 
from Fiji; courtesy of Dr. W. L. Brown.) 
Strumigenys perplexa (F. Smith) 
Length about 1.6 mm. Similar to louisianae, except in 
the following details: Spinules on the ventral surface of 
the thorax and first abdominal somite only. Body hairs — 
(1) occurring back as far as abdominal somite viii, shorter 
(0.036-0.087 mm) ; (2) shorter (0.036-0.09 mm) ; (3) 
usually on abdominal somites i-iv, rarely one or two on v. 
Head hairs shorter (0.036-0.092 mm). Anterior surface 
of each lobe of the labrum with four or five sensilla. (Ma- 
terial studied: numerous larvae from Victoria, Australia; 
courtesy of Dr. W. L. Brown.) 
Brown, 19536, p. 467 : The larvae feed only on Collem- 
bola. 
Strumigenys saliens Mayr 
Apparently very similar to louisianae. (Material studied: 
a single larva with hairs broken off, from “Rio Negro, 
Parana.”) 
Strumigenys n. sp. 
Length 1.9 mm. Similar to louisianae except in the fol- 
lowing details: Body hairs — (1) shorter (0.027-0.1 mm) ; 
(2) shorter (0.054-0.134 mm) ; (3) slightly longer (about 
