CONTENTS OF VOLUME V. 
PAGE 
Ofircerss Constitution atdelbist Of Miembersae-s 7.96. 4eseeuee css: seus - V-XiV 
The Evolution of the Webs of Spiders. J. H. ComMSTOCK.................... 1 
Notes on the Eastern Species of Cerceris (Hym. Philanthide. NATHAN BANKs 11 
Natural History and General Behavior of the Ephemeride Nymphs 
Heptagenia Interpunctata (Say). J. E. WODSEDALAK................. 31 
INewaviestern “lipulas a Re Wis DOANEM nme tnriess cee: soci e seerleniscs ¢ 4l 
A Problem in the Flight of Insects.. H. OSBORN..............2-.2.00.000005 61 
Haumichienopucies im: Entomology. . Hi OSBORNej.45.5 ~.a..c sss Se wn sels 63 
Notes on Aquatic Hymenoptera. R. MATHESON and C. R. Crospy.......... 65 
PESO TC TOMS ME enter era en rah es aioe Poe Od kU cute erect raat ties SRY cot Ses elena claw ale Scr ai 72 
Proceedings of the Washington Meeting. A. D. MacGILLIVRAY............. 76 
Homologies in the Wing-Veins of May-Flies. A. H. MorGAN................ 89 
(whe Pezomachini or-North America, EB. Hi STRICKLAND. j4)5.0-20-65. se 113 
The North American Chilopods and Diplopods. R. V.CHAMBERLIN........ 141 
Contribution to the Knowledge of Mealy Bugs, Genus Pseudococcus, in the 
Vicintivaon Cape mow Souter Ca gem GanGw AUN ease) steit. eit. 177 
Brazilian Ichneumonide and Braconice Obtained by the Stanford Expedition. 
CEIARIEE SUED RWESS iy recr eke 4 aya aan aE Wot eee neg 2 6 Bote mbit: Biel 193 
The Lacinia in the Maxilla of the Hymenoptera. ALEx D. MAcGILLIvRAy.... 231 
The Pupal Wings of Hepialus Thule. ALEx D. MAcCGILLIVRAY.............. 239 
Anatomy of the Tomato-Worm Larva, Protoparce Carolina. ALVAH PETERSON 246 
Observations of the Ecology of Dragon-Fly Nymphs: Reactions to Light and 
Contactar Co; Bel CURTIS HRIPE Vs saree, sot ie eee oor lien ara eke 273 
The North American Digger Wasps of the Subfamily Scoliine. Oscar C. 
Jo UATPaN EIDE Set JE eet irae capiarg Dist are eae Pore Lea a ter ier hater Seve y oe 293 
New: Neotropical’ Mipulinas, CHARLES; Py ALEXANDER: ¢ 224.4. [olen cee ess ss 343 
Life History and Habits of Trogoderma Tarsale (Melsh), a Museum Pest. 
Jeg: 1B NYY CIDE TDIDYA IDC Hip, ae pos ces es OE EERE EA ays Ecce t kein SLR eC 367 
The Internal Anatomy of Icerya Purchasi. Cart E. JOHNSTON.............. 383 
Death Feigning in Conotrachelus Nenuphar Herbst. Wrtson P. Gre and 
1 JRE. SDE UT TOTES Case 1 ct cote Mr Acai Reo TROGIR 391 
The Flight of Two Thousand Marked Male Mediterranean Fruit Flies 
(Ceratitis capitata Wied). Henry H. P. SEVERIN and Wo. J. Hartune 400 
Observations on the Life History of a New Species of Psychoda. PAut S. 
