INDEX TO AQUATIC INSECTS IN NEW YORK STATE 
Plates, explanation of, 487-99. 
_Plathemis lydia, 275. 
(trimaculata), 278, 279. 
Platycnemis tibialis, 244. 
_plumbea, Libellula, 274, 276. 
plumicornis, Corethra, see Corethra 
plumicornis. 
Pohl, cited, 338. 
pollutum, Agrion, 258. 
pollutum, Hnallagma, see Enallagma 
pollutum. 
Polygonum sagittatum, 295. 
Polynema needhami, 230. 
polynemae, Hyperteles, 230. 
polynemae, Tetrastichus, 230. 
- Polyphemus pediculus, 207. 
Pontederia, 295. 
porosicollis, Donacia, see Donacia 
porosicollis. 
posita, Ischnura, 259, 260, 261-62. 
posita, Nehallennia, 261. 
positum, Agrion, 261. 
positum, Nehallennia, 261. 
posticata, Simulium, 352, 377. 
Potamogeton, 294. 
natans, 325. 
princeps, Epicordulia, 275. 
Progomphus obscurus, 275. 
Protoneura antennata, 257. 
Psorophora, 390, 391, 392, 
410-11. 
ciliata, 411. 
explanation of plate, 496. 
howardii, 410. 
Psychodidae, 330, 331, 332. 
Ptinidae, 290. 
Ptychopterinae, 330. 
pubescens, Donacia, 315. 
pubicollis, Donacia, 315. 
pulchella, Libellula, see Libellula 
pulchella. 
pulehrum, Simulium, 352, 3538, 376- 
Gs 
punctipennis, Anopheles, 406-9, 410. 
explanation of plate, 496, 
punctipennis, Corethra, 393, 394, 397. 
pusilla, Donacia, 316. 
pusillus, Chauliodes, 485. 
putrida, Argia, 240-41, 275. 
putridum, Agrion, 240. 
402, 
513 
Pyrochroidae, 293. 
Pyrrhosoma, 245. 
quadrimaculatus, Anopheles, 409,. 
410. 
quadrivittatum, Simulium, see Si- 
mulium quadrivittatum. 
Rambur, P., cited, 485. 
ramburii, Agrion, 260, 261. 
ramburii, Ischnura, 260, 261. 
rastricornis, Chauliodes, see Chauli- 
odes rastricornis. 
rectangularis, Lestes, 
rectangularis. 
Redtenbacher, J., cited, 485. 
Reed, H. D., work of, 202. 
reptans, Simulium, see Simulium 
reptans. 
restuans, Culex, 416, 417-18. 
explanation of plate, 496. 
Rhaphidia cornuta, 478. 
Rhipiceridae, 293. 
see lLestes 
Rhyphidae, 331, 382. 
rigida, Sagittaria, 294, 322. 
Riley, C. V., cited, 338, 339-40, 341- 
43. 350, 365, 368, 378, 374, 382, 
383, 454, 472-78, 485-86. 
Riley, W. A., acknowledgments to, 
326. 
Ross, cited, 388. 
rosteria curtisii, Haemoria, 327. 
rubicundulum, Sympetrum, 275, 278. 
rufa, Donacia, 317. 
ruficollis, Hermes, 468. 
ruficollis, Neuromus, 468. 
rufipes, Simulium, 851, 858, 361. 
rugosa, Donacia, 316. 
Rupertsberger, Mathias, cited, 289. 
Sagittaria, 295, 306. 
latifolia, 294, 822. 
rigida, 294, 322. 
sagittariae, Donacia, 298, 3807. 
sagittatum, Polygonum, 295. 
Hh. Dwight, cited, 298, 
oor 
S27. 
Sanderson, 
299, 809, 810, 
sapphirina, Uranotaenia, see Urano- 
taenia sapphirina, 
saucium, Agrion, 247. 
