628 
Maple—Continued. 
Swamp, 447. 
Margaritana, 288. 
Marigold, Marsh, 461. 
Marmota monax, 532-533. 
Marsupialia 513-515. 
Marten, American, 577. 
Marsh wrens, 443. 
Mastigocerca bicornis, 199. 
bicristata, 199. 
capucina, 200. 
carinata, 199, 292, 334. 
elongata, 200. 
lata, 200. 
mucosa, 200. 
stylata, 200. 
Mastigophora, 14, 16, 17, 20, 22, 34, 62, 
63-92, 94, 219, 291, 292, 294, 296, 
297, 298, 299, 300, 307, 310, 320. 
May-beetles, 586. 
Meadowlark, 484. 
Meadow-mice, 528, 585, 586. 
Meadow-mouse, 548, 559. 
Long-haired, 551. 
Mole, 556. 
Pennsylvania, 506, 551. 
Prairie, 551—556. 
Wood, 556. 
Megalotrocha alboflavicans, 140. 
semibullata, 141. 
spinosa, 141. 
Melanotus communis, 455. 
Wilhossina, lil, BS, S4 Si, Os, GO, 705 7. 
ISO, QOS 
granulata, 11. 
var. spinosa, 35, 43, 52-54, 56, 69, 
Oy win GOW Sikes. 
yeti, ih, See ahs) Sl SS So i, WA 
DOD Sse 
Mephitis avia, 574. 
mesomelas avia, 574-576. 
Meracantha contracta, 471. 
Meridion circulare, 43, 57. 
Merismopedia glauca, 20, 314. 
Mermaid-weed, 458, 460. 
Mesostomum ehrenbergii, 134. 
Mesozoa, 114. 
INDEX 
Metacineta mystacina, 131, 327. 
Metopidia acuminata, 201. 
bractea, 201. 
lepadella, 201. 
oblonga, 201. 
rhomboides, 201. 
salpina, 201. 
solidus, 201, 334. 
triptera, 201. 
Micen5 72> S76. )5/7/8) 585.1004 soOse 
Field-, 554, 580, 585. 
Meadow-, 528, 585, 586. 
Wood-, 509, 510. 
Micrococcus, 18. 
Microcystis, 19. 
ichthyoblabe, 20, 292, 314. 
Microperca punctulata, 390, 425, 437. 
See also Darter, Least. 
Micropterus dolomieu, 437. See also 
Bass, Small-mouthed Black. 
salmoides, 437. See also Bass, Large 
mouthed Black. 
Microtus, 556. 
austerus, 504, 551-556. See also 
Praire-vole. 
pennsylvanicus, 506, 551. See also 
Meadow-mouse, Pennsylvania. 
pinetorum scalopsoides, 556. 
Milkweed, Swamp, 453. ; 
Miller's Thumb, 390, 401, 404, 417. 
Mink, 577-579. 
Minks, 506, 508, 512, 575. 
Minnow, Black-head, 385, 395, 403, 422. 
428. See also Pimephales promelas. 
Blunt-nosed, 385, 395, 402, 417, 428. 
See also Pimephales notatus. 
Bullhead, 386, 396, 402, 417, 428. 
See also Cliola vigilax. 
Mud-, 387, 429. See also Umbra limi. 
Silvery, 385, 395, 402, 417, 428. See 
also Hybognathus nuchalis. 
Spot-tailed, 386, 396, 402, 417, 422, 
429. See also Notropis hudsonius. 
Straw-colored, 386, 396, 402, 417. 
428. See also Notropis blennius, 
Sucker-mouthed, 386, 397, 402, 429. 
See also Phenacobius mirabilis. 
