Latrodectus variolus, 212 
M ANICAPSOCIDAE, 144 
Manicapsocus, 144 
Megasecoptera, 58, 66 
Mesozoic Ants, 1 
Millipedes, 107 
Miomoptera, 224 
MUSAPSOCIDAE, 122 
MUSAPSOCUS BIRKENHOLZI, 128 
MUSAPSOCUS CREOLE, 125 
MUSAPSOCUS HUASTECANUS, 122 
MUSAPSOCUS SIMLAE, 129 
MUSAPSOCUS TABASCENSIS, 127 
Mutillidae, 234 
NELOPHIA COMPSA, 221 
NEOFOUQUEA SUZANNEAE, 64 
Neotropical Tabanidae, 208 
Neuroptera, 237, 270, 342 
NOSYBINAE, 253 
Notes on Neotropical Tabanidae 
(Diptera). XI. Stenotabanus 
staryi n. sp. from Cuba. 208 
Notes on the Biology of Two Cen- 
tral American Ptinus (Coleoptera: 
Ptinidae) With a Description of 
a New Species. 191 
Omophron luzonicus, 314 
Otiothops casobus, 203 
Otiothops pentucus, 206 
Palaeodictyoptera, 58 
Palaeomanteidae, 224 
Palaeomantis hangardi, 225 
Palaeomantis ostertali, 226 
Palpimanidae, 203 
Parelectrentomum, 156 
Pheidole embolopyx, 332 
Phidippus coccineus, 104 
Polyergus lucidus, 299 
Predatory and Sexual Behavior of 
the Spider Sicarius (Araneae: 
Sicariidae). 320 
PROTROCTOPSOCUS ENIGMATICUS, 131 
Pseudanophthalmus sylvaticus, 167 
Psocoptera, 118 
Ptinidae, 191 
Ptinus costaricensis, 199 
Ptinus latefasciatus, 191 
Salticidae, 104 
Siagona sinistra, 316 
Sicariidae, 320 
Slave-Raids of the Ant Polyergus 
lucidus Mayr. 299 
Species of Widow Spiders in North- 
ern Argentina ( Latrodectus : 
Theridiidae) . 290 
Sphaeroberotha dumonti, 344 
SPHECOMYRMA FREYI, 8 
SPHECOMYRMINAE, 6 
Stefanomioptera, 224 
Stenotabanus staryi, 208, 209 
Studies on Free Colonies of Crypto- 
cerus texanus Santschi (Hymenop- 
tera : Formicidae). 34 
Studies on North American Carboni- 
ferous Insects. 5. Palaeodictyop- 
tera and Megasecoptera from 
Illinois and Tennessee, with a 
Discussion of the Order Sypharop- 
teroidea. 58 
Studies on the Systematics of the 
Berothidae, Part I: A Redescrip- 
tion of the Genus Sphaeroberotha 
Navas, with a Critique of the 
Taxonomic Characters Used in 
the Berothinae (Neuroptera). 342 
Sypharoptera pneuma, 79 
Sypharopteroidea, 58 
Tatuidris, A Remarkable New 
Genus of Formicidae (Hymenop- 
tera). 183 
TATUIDRIS TATUSIA, 187 
Termites, 276 
The Electrentomoid Psocids (Psocop- 
tera). 118 
The Evolutionary Significance of Ro- 
tation of the Ootheca in the Blat- 
taria. 85 
The Female Sex of the Mutillidae 
Subfamily Eotillinae (Hymenop- 
tera). 234 
The First Mesozoic Ants, with the 
Description of a New Subfamily. 
1 
The Life-cycle of the Spider Phidip- 
pus coccineus (Salticidae) under 
Laboratory Conditions. 104 
Theridiidae, 20, 290 
Theridion attrita, 340 
The Spider Genus Billima Simon. 
340 
356 
