INDEX 



611 



//i</!>nata larviformia, 303, 363 



lufrabasals, 318 



Ink-bag (Ceph.), 177, 196 ; morphology, 



197 



Inoceramus, 17 

 I uti'iji'ljiiillinta, shell, 63 

 Interambulacra, 339 

 Interambulacral radii, 316 

 Interdistichals, 363 

 Internodes, 374 

 Interpalmars, 363 

 Inter radii, 316 

 Intersecundibrachs, 363 

 Intertertibrachs, 363 

 locrinn.s, 304 

 Irpa, 418 

 Irregidares, 315 

 Isaster, 293 

 Isoiiiyaria, 124 



JANUS, 13 ; nervous system, 141 

 Jouanmtia, 19 



,, Gumingii, 19 

 Juglandocrinus, 332 



KEBER'S organ (red-brown organ), 215 



Kellya, 17 



Kentrodoris, 13 



Kleinia luzonica, apical system, 342 



Kolga, 285 



Kollicker's canals (Ceph.), 168 



LABIAL palps (Gastr.), 104; (Lam.), 105 



La.bidiaster, 299 



Labidodemas, 491 



Labrum (Echinoid.), 348 



Lacuna, 108 



Lcetmogcnie, 285 



Laganid.ce, 291 



Laganum, 291 



depressum, apical system, 323 

 Latnellaridaf, 6 

 Lamellibraiiclnata, lJ^-21 \ byssus, 114; 



diagrams, 50 ; heart, 199 ; shell, 59, 62, 



156 



Lancet plates (Blast.), 380 

 Lanistes (see Ampidlaria), 161 

 Luri-ifnnnia, 303 

 Lascea, 17 



Lateral organs (Gastr.), 165 

 Lecythocrinus, 304 

 Leda, 14 

 Lepctidce, 5 

 Lepidocentriis, 289 

 Lepidomenia, 13 



hystrix, 132 

 Leptoconckus, 183 

 Lepton, 17 



Leptopty 'chaster kerguelenensis, 503 

 Leskiidce, 295 

 Leuconia, 109 

 Ligament (Lam.), 61 

 Lima, 105 



Limacidce, 8 



Limacina helicina, anatomy, 189 



,, Lesuerui, 11 



,, retroversa, 160 

 Liinacinidce, 11 ; diagram, 80 

 Limapontiidce, 12 

 Limax, 8 ; vascular system, 204 

 Limidce, 53 

 Limncea, 8 



abyssicola, 100 



stagnalis, genital organs, 235 

 Limnceidce, 8 

 Linckia, 298 



,, midtifora, 244 

 Linckiidce, 298 

 Linthia, 293 

 Lipocephala, 101, 177 

 Lithodomus, 15 

 Litiopidce, 108 

 Littorinidce, 6 

 Lituites, 68 

 Lobiger, 12 

 Loligo, 24 ; gonad, male, 231 ; nervous 



system, 148 

 ,, vulgaris, 23 

 Loligopsis, 24 ', shell, section, 69 

 Lomanotidce, 13 

 Loven, law of, 341-344 

 Lovenia, 293 



Lucina Pennsylvanica, shell, 63 

 Lucinacea, 50 

 Lucinidce, 17 

 Luidia, 296 

 Lunula, 341 

 Lutraria, 51 

 Lutrariidce, 19 

 Lyonsia Norwegica, 51 

 Lyonsiidcie, 21 



MAGTRA, 18 



Mactridcc, 18 

 Macula, 168 



,, acustica, 168 

 Madreporite, 321, 416-423 

 Magttus, 183 

 Malletia, 49 

 Malleus, 17 

 Mantle, 26 ; cavity, 26 

 Margarita Groenlandica, 4 

 Margaritana (Unio) Margartiifents, 17 

 Marginaster, 297 

 Marginellidce, 6 

 Mariacrinus, 307 

 Marionia, 13 

 Marseniadce, 225 

 Marsupia, 347 

 Mamipiocrinus, 308 



ccelatus, tegmen calycis, 



369 

 Marsupites, 304 



ornatus, apical system, 329 



Martesia, 65 

 Megallaesthetes, 166 



