446 



Index. 



Monobothrum, 171. 

 Monocampic, 168. 

 Monocaulidae, 93. 

 Monocaulis, 93. 

 Monocelis, 161. 

 Monoceros, 309. 

 Monochitonidse, 232. 

 Monocystidea, 65. 

 Monocystis, 64. 

 Monocyttaria, 62. 

 Monoderic, 13. 

 Monoecious, 34. 

 Monogenea, 174. 

 Monogenetic, 35. 

 MonoUstra, 362. 

 Monomelic, 95. 

 Monomya, 261, 268. 

 ]Monopleurobranchiata, 315. 

 INIonopsea, 95. 

 ;Monorhagia, 162. 

 Monostomidse, 176. 

 Monostomum, 176. 

 Monosyca, 78. 

 ]\Ionstrilla, 334. 

 Montacuta, 267, 269. 

 Mopsea, 123. 

 Morch, 312. 

 Morphina?, 413. 

 Morphological individual, 25. 

 Morphology, 12. 

 Morrisia, 249, 254. 

 Moseley, 283. 

 ^lotores aculei, 140. 

 Motions of protoplasm, 2. 

 Mucous glands, 14. 

 Miiller, 15, 61, 37, 126, 345. 

 Miilleria, 268. 

 Murex, 289, 29T, 298, 309. 

 Muricea, 122. 

 Muricidse, 309. 

 Musca, 408. 

 Muscle cells, 5. 

 Muscular tissue, 20. 

 Muscles of Echinus, 143. 



„ „ Insects, 389. 



„ „ Molluscs, 288, 31; 



,, ,, Bryozoa, 227. 

 Mutilla, 420. 

 Mya, 256. 

 Myacea, 271. 

 Myeloid cells, ig. 

 Myeloplaxes, 18. 

 Mygalidse, 374. 

 Mygale, 365, 368, 374. 



Myidae, 271. 

 Myodora, 270. 

 Myopsidae, 6. 

 Myoryctes, 184. 

 Myosin, 6. 

 Myriopoda, 377. 

 Myrmecia, 375. 

 MyTmeleo, 327. 

 MyriotheHdae, 92. 

 Myriotrochus, 152. 

 Myriozoidas, 229. 

 Mysis, ear of, 340. 

 Alyopsidae, 274. 

 Myosin, 6. 

 Mysis, 340, 358. 

 Mytilus, 256, 257, 267. 

 ^lytilicardia, 264. 

 Myxodictj'um, 49. 

 Mjrxobrachia, 62. 

 ^lyxomycetes, 25. 

 Myzostoma, 49. 

 Myzostomidae, 175. 



Xacella, 307. 

 Nacre, 244. 

 Naidise, 218. 

 Nais, 218. 

 Nanina, 312. 

 Nassa, 309. 

 Nassula, 66, 71. 

 Natural selection, 71. 

 Naumann, 19. 

 Nauplius, 342. 

 Nausithoe, 105. 

 Nautactis, 114. 

 Nautilus, 316, 325. 

 Nearctic region, 42. 

 Nebalia, 351. 

 Necrophorus, 418. 

 Nectocalyx, 88, 96. 

 Nectosac, 97. 

 Nectocalycinc canals, 97. 

 Neda, 305. 



Needham's filaments, 32; 

 Neisida;, 108. 

 Nematelmia, 177. 

 Nematoda, 179. 

 Nematophore, 95. 

 Nemertes, 162, 167. 

 Nemertidea, 161. 

 Nemopsidse, 92. 

 Nemopsis, 92. 

 Neossin, 8. 

 Neotropical region, 44. 



