LIST OF ILLUSTRATIONS. XIII 



Page. 



Calyptrohothrium minus. Young scolex 283 



Cahiptrobothrlum minus. Fragment of strobile, young 283 



Side view of a foot showing the Phintula below the first tarsal segment 287 



Aglaothorax oratiis. Adult male ; tip of abdomen ; oercus ; infracereal plate. 292 

 Aglaothorax ca.^tanus. Pronotum of male from above; tip of the abdomen 



from above ; cercus ; infracereal plate 294 



Xeduba carinata. Pronotum of male from above ; tip of abdomen of the male 



from above ; cercus ; infracereal plate 297 



Neduba carinata var. plctumta. Adult female 299 



Xeduba carinata var. concexa. Adult female 300 



Xeduba carinata. var. courexa. Tip of abdomen of adult male from above 301 



Xeduba morsei. Tip of abdomen of adult male from above 302 



Xeobarrettia imperfecta. Adult male 303 



Xeobarrettia imperfecta. Tip of al)domen of male from al)ove 304 



Behnia rictoriR\ Adult male 306 



Rehnia victor iic. Tip of abdomen of male from al)ove 307 



Rehnia spinosa. A dult male 307 



Rehnia spinosa. Tip of abdomen of the male from aVx)ve 308 



Zacycloptera atripennis. Adult male 309 



' Zacycloptera atripennis. Tip of abdomen of male froui above 309 



Capnobotes fuliginosus. Adult male 312 



Capnobotes fuliginosus. Ovipositor; cercus of the male 313 



Capnobotes occidentalis. Cercus of the male 315 



Capnobotes bruneri. Outline of elytron of the female 317 



Auoplodnsa arizonensis. Adult male 319 



Atlanticus dorsalis. Tip of the ovipositor 323 



A tlanticus pachymerus. Adult male 324 



Engoniuspis iestacea. Type specimens 324 



Engoniaspis, species 325 



Atlanticus pachymerus. Cercus of adult male 325 



Atlanticus gibbosus. Tip of abdomen of male from aljove 326 



Apote notabilis. Adult female 328 



Apote notabilis. Cercus of male 329 



Apote notabilis var. rubusta. Cercus of male 329 



Eremopedes epjhippiata. Adult female 332 



Eremopedes ephippiafa. Cercus of male 333 



Eremopedes scudderi. Cercus of male 334 



Eremopedes balli. Cercus of male 335 



Eremopedes brericauda. Adult female 337 



Eremopedes albofasciata. Adult female 338 



Stipator americanus. A dult male ; cercus of mal e 342 



Stipator stevensonii. Cercus and last abdominal segment of male 345 



Stipator nigromargincdus. Adult female 346 



Stipator grandis var. insignis. Cercus of male 349 



Anabrus simplex. Adult female 354 



Anabrus simplex. Cercus of male 355 



Anabriis cerciata. Cercus of male 361 



A nabrus longijjes. Adult female 362 



Peranabrus scabricollis. Adult male; cercus of male 364 



Peranabrus scabricollis. Adult female 365 



Peranabrus scabricollis. Female ovipositing 367 



Atiloplus notcdus. Adult female; cercus of male 370 



Ateloplus minor. Adult female 371 



