INDEX 623 
Difflugia pyriformis—continued. 
var. nodosa, 111. 
var. venusta, 111. 
rubescens, 111. 
scalpellum, 104. 
tuberculosa, 111. 
urceolata, 111. 
var. helvetica, 109. 
varians, 105, 106. 
Diglena biraphis, 198, 221. 
catellina, 198, 221. 
circinator, 198. 
forcipata, 198. 
giraffa, 198. 
grandis, 198, 221. 
uncinata, 198. 
Dimeerium hyalinum, 115, 175, 186, 208. 
(See Errata.) 
Dinameeba mirabilis, 112. 
Dineutes assimilis, 473. 
_Dinobryon, 8, 67, 73. 
curvatum, 79. 
eylindricum, 78. 
var. angulatum, 78. 
var. divergens, 78. 
var. palustre, 78. 
var. pediforme, 78, 79. 
var. schauinslandii, 78, 79. 
elongatum, 78. 
var. undulatum, 78. 
protuberans, 78. 
sertularia, 69, 73-79, 320. 
var. alpinum, 78. 
var. angulatum, 73, 74, 320. 
var. divergens, 73, 74, 320. 
var. stipitatum, 73, 74, 77, 321. 
var. thyrsoideum, 78. 
var. undulatum, 73, 74. 
sociale, 78. 
stipitatum var. americanum, 78. 
var. bavaricum, 78. 
Dinoflagellata, 13. 
Diplesion blennioides, 389, 425, 
See also Darter, Green-sided. 
Diplosiga frequentissima, 67, 79. 
Diptera, 285-286. 
Dipus hudsonius, 563. 
437, 
Distyla gissensis, 221. 
hornemanni, 221. 
ohioensis, 221. 
stokesi, 221. 
Diurella tigris, 55. 
Dixa sp., 286. 
Docidium, 62. 
Dogfish, 384, 394, 404, 417, 422, 427. 
See also Amia calva. 
Dorosoma, 95. 
cepedianum, 60, 384, 437, 
Gizzard-shad. 
Dragonfly, 450, 454, 458, 464, 470. 
Dulichium arundinaceum, 466. 
spathaceum, 465. 
Dytiscus, 450. 
sp., 470. 
See also 
E 
Eel, 384, 394, 404. 
Eggs, 513, 538, 573,%576, 578, 580. 
Elaphus canadensis, 515. 
Elasmognatha, 494. 
Elassoma zonatum, 388. 
fish, Pigmy. 
Elater sp., 478. 
Elk, American, 515, 603, 604. 
Elm, American, 453, 461, 463, 464, 466, 
475, 476, 479, 481. 
Encyonema prostratum, 50. 
Endodontide, 495. 
Endodontine, 495. 
Endophrys rotatoriorum, 113, 143. 
Emtomostracay 5: 0.75 9) 13.45 15. 116. 
ANA Oe OA Mee, 3 On 13 Se toons on 
283 292) 293, 294, 295. 296, 297, 298, 
ZOOS 00" S02 ol ON 330: 
Eosphora aurita, 221. 
Ephemerida, 285, 286. 
Epizschna heros, 470. 
Epistylis, 115, 116. 
flavicans, 124. 
plicatilis, 124, 131. 
S]O/De) AA 
Epithemia turgida, 50. 
Eptesicus melanops, 596-597. 
See also Sun- 
