138 
Psyche 
[December 
membrane; (3) as in louisianae. Cranium transversely 
subelliptical; breadth 1.4 times length; middle of occipital 
border straight. Head hairs shorter (0.029-0.09 mm). 
Labrum shorter and broader (breadth 2.8 times length) ; 
anterior surface of each lobe with four sensilla ; entire 
posterior surface spinulose, the spinules minute and in long 
subtransverse rows. Mandibles shorter and stouter; apical 
tooth long, slender and round-pointed; subapical tooth 
anterior, proximal medial tooth much larger. Labial palp 
with five sensilla. (Material studied: 10 larvae from 
Queensland, Australia; courtesy of Dr. W. L. Brown.) 
Brown, 1953b, p. 467 : The larvae feed only on Collem- 
bola. 
Strumigenys elongata Roger 
Length about 1.7 mm. Similar to louisianae, except in 
the following details: Body hairs — (1) occurring back 
as far as abdominal somite Vlil, shorter (0.018-0.12 mm) ; 
(2) shorter (0.014-0.12 mm) ; (3) slightly longer (about 
0.18 mm.). Head moderately large. Head hairs shorter 
(0.036-0.1 mm). Apical tcoth of mandibles longer and 
slenderer. (Material studied: 10 larvae and semiouoae 
from Mexico, collected by E. 0. Wilson ; courtesy of Dr. 
W. L. Brown.) 
Explanation* of Platk 10 
St nimigoiys louisianae Hofjor, Fifis. 1-6. — 1. head in anterior view. 
X105; 2. left mandible in anterior view. X185; 3. mature larva in .side 
view, X'*^8; 4-6, three types of body hairs. Xl8o. 
Strumigeuijs nidijcx Mann, Fig. 7, a deeply bifid anehor-tipj^ed liair. 
X185. 
Strumigenys australis Forel, Figs. 8-15. — 8. immature (?) larva in 
ventral view. XF3 ; 9. anchor-tipiied liody haii', X185; 10 and 11. liifid 
body hairs. X185; 12. denticulate body hair. X185; 13. left man lible in 
anterior view. Xl85; 14, head in anterior view, 15, immature (?'< 
larva in side view. Xd3. 
Basiccros .‘^p.. Figs. 16 and 17. — 16, head in anterior view. X^L 17, 
left mandible in anterior view. X86. 
’We wish to thank Dr. W. L. Brown for material, for identificaticii'^ 
and for advice. 
"Dr. W. L. Brown regards schmidti as a synonym of gravis. 
