152 
Psyche 
[December 
Predation of Arthropod Eggs by the 
Ant Genera Proceratium and Dis- 
cothyrea, 115 
Presence of a Peritrophie Mem- 
brane in Some Aquatic Hemip- 
tera, 117 
Proceratium, 115 
Pseudosphegina carpexteri. 42 
Ranatra jusca, 117, 135 
Reproductive Isolation in the House 
Cricket, 30 
Revision of the Nearctic Species of 
Tomoderus, 51 
SCATOCCEMYIA PLAUMANXI. 13 
Senoprosopis romeri, 37 
Sigara ornata, 135 
Sigara signata, 120 
Some Flies of the Familv Asilidae, 
90 
Some New Species of Robber Flies, 
70 
Spiders of the New Genus Arctach- 
aea , 102 
Strumigenys decollata, 109 
Strumigenys ecliptacoca, 111 
Stylogaster lopesi, 15 
Supplement to the Revisions of the 
Dacteine Ant Genera Orectogna- 
thus and Arnoldidris, with Keys 
to the Species, 17 
Sympatry of the Ants Conomyrma 
bicolor (Wheeler) and C. pyra- 
mica (Roger), 75 
Tertiary Flies from Colorado and 
the Baltic Amber, 37 
Tomoderus constrictus, 56 
Tomoderus inhabilis, 57 
Tomoderus interruptus, 54 
T omoderus impressulus, 58 
Triclis tagax, 90 
Troglopedetes canis, 86 
Troglopedetes orientalis. 86 
Troglopedetes vandeli, 86 
Zabrops, 90 
Zodion rossi, 12 
