506 NEW 
disjunctus, Chauliodes, 458, 463-64, 
484. 
distincta, Donacia, 316. 
divagans, Enallagma, 254. 
explanation of plate, 489. 
Dixa, key to species, 481-32. 
centralis, 482. 
clavata, 482. 
fusea, 4382. 
marginata, 482. 
modesta, 429-31, 482. 
explanation of plate, 498. 
notata, 432. 
terna, 432. 
venosa, 482. 
Dixa midges, 429-32. 
Dixidae, 203, 330, 382, 429-32. 
domitia, Perithemis, 275. 
Donacia, 208, 294, 314-28, 326-27; 
key to species, 314-17; explana- 
tion of plates, 491-92. 
aequalis, 295, 312, 315, 316, 321-22, 
326. 
bicolor, 326. 
cincticornis, 296, 311, 314, 315, 
316, 317-18, 326. 
explanation of plates, 490, 491, 
492. 
clavipes, 326. 
crassipes, 298, 307, 327. 
distincta, 316. ; 
emarginata, 315, 317, 322-28, 327. 
explanation of plates, 490, 491, 
492. 
femoralis, 316. 
flavipes, 317. 
floridae, 316. 
harrisii, 316. 
hirticollis, 315. 
hypoleuca, 316. 
limbata, 327. 
linearis, 307. 
metallica, 317. 
palmata, 295, 296, 297, 298, 305, 
311, 314, 315, 316, 318-19, 327. 
explanation of plates, 490, 491- 
92. 
piscatrix, 298, 316, 327. 
porosicollis, 296, 314, 315, 316, 
320-21, 327. 
YORK STATE MUSEUM 
Donacia porosicollis, explanation 
of plates, 490, 491, 492. 
pubescens, 315. 
pubicollis, 315. 
pusilla, 316. 
rufa, si7- 
rugosa, 316. 
Sagittariae, 298, 307. 
simplex, 327. . 
subtilis, 315, 316, 319-20, 327. 
explanation of plates, 491, 492. 
tuberculata, 316. — 
Donaciinae, 294-825; key to genera, 
314. 
Dorocordulia lepida, 277. 
libera, 250, 275. 
dorsalis, Chironomus, 483. 
doubledayi, Enallagma, 279. 
Dragon flies, 212, 218, 241; appen- 
dix on, 263-76; distribution of 
New York, 276-79. 
Dromogomphus spinosus, 264, 275, 
OT. 
Drury, Drew, cited, 483. 
Dugés, Alfred, cited, 484. 
durum, Agrion, 253. 
durum, Enallagma, 253, 279. 
Dyar H., cited, 388, 398, 415, 425, 
428. 
dyari, Culex, 416. 
Dytiscidae, 290. 
ebrium, Agrion, 255. 
ebrium, Enallagma, 255, 277. 
explanation of plate, 489. 
Eichhorn, cited, 337. 
Elateridae, 290, 293. 
Hldit, cited, 327. 
clegans, Simulium, 351, 352, 377. 
elegans, Sylphis, 222. 
elisa, Celithemis, 275, 278. 
elongata, Somatochlora, 270, 275. 
emarginata, Donacia, see Donacia 
emarginata. 
Enallagma, 236, 237, 250-58, 259. 
annexum, 258. 
explanation of plate, 489. 
antenuatum, 257. 
explanation of plates, 488, 489. 
a 
